1989 41 Australia $325, New Zealand $480 (inc. GST), Malaysia $630, £1-50 Ireland DR2.31 (inc. VAT)...

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MANOR SUPPLIESMKV PAL COLOUR TEST GENERATOR

FOR DOMESTIC TV & VCR.

TESTDEMONSTRATIONS

AT 172WEST END LANE

* 40 different patterns and variations.* Fully interlaced sync pulses with correct picture

blanking.* EBU colour bars, BBC colour bars, whole rasters & split

bars (specially useful for VCR service), white, yellow,cyan, green, magenta, red, blue and black.

* Chequerboard.* Mono outputs with border castellations, cross hatch,

grey scale, vertical lines, horizontal lines and dots.UHF modulator output plugs straight into receiveraerial socket.

* Additional video output for CCTV & VCR.* Facilities for sound output.* Easy to build kit, standard parts. Only 2 adjustments.

No special test equipment required.* Mains operated with stabilised power supply.* All kits fully guaranteed with back-up service.* Also available with VHF Modulator.Price of Kit £70.00Case (1(Y' x 6" x 2 1/4") app. £8.60Optional Sound Module (6MHz or 5.5MHz)

13Built & Tested in Case including Sound Module £108..(91:))

Post/Packing £3.00Add VAT 15% TO ALL PRICES

PAL COLOUR BAR GENERATOR (Mk4)'

* Output at UHF, applied to receiver aerial socket.* In addition to colour bars R -Y, B -Y etc.* Cross -hatch, grey scale, peak white and black level.* Push button controls, battery or mains operated.* Simple design, only five i.c.s on colour bar P.C.B.* Backup service available.PRICE OF MK 4 COLOUR BAR GENERATOR KIT£30.00. CASE £8.60. BATT HOLDERS £4.20. MAINSSUPPLY KIT £4.20 (Combined P&P £3.00).MK 4 (BATTERY) BUILT & TESTED £58.00 + £3.00 P & P.MK 4 (MAINS) BUILT & TESTED £68.00 + £3.00 P & P.VHF MODULATOR (CH I to 4) FOR OVERSEAS £5.75.EASILY ADAPTED FOR VIDEO OUTPUT & C.C.T.V.

ADDVAT15%

KITS & PROJECTSSAW IF AND TUNER UNIT complete and tested for video & audio outputs£28.50 p.p. £1.80.PAL DECODER KIT (Video to RGB) for Monitors £27.00 p.p. £1.00.PAL ENCODER KIT (RGB to Video) £18.50 p.p. £1.30.CROSS HATCH UNIT KIT, Aerial Input type, incl. T.V. sync. and UHFModulator. Battery Operated. also gives Peak White & Black Levels, can heused for any set. £13.50 p.p. 80p. (Alum. Case £3.20 p.p. £1.40.)ADDITIONAL GREY SCALE Kit £2.90 p.p. 45p.UHF SIGNAL STRENGTH METER KIT £30.00 Alum. Case £3.20. DcLuxe Case £8.60 (Built & Tested £48.00) p.p. 0.50.CRT TESTER & REACTIVATOR KIT For Colour & Mono complete withCase, Panel Meter Indicator - can he adapted for latest CRTs £35.00 p.p.£3.01).

TV SERVICE SPARESPHILIPS SPARES

G8 VARICAP CONTROL £2.50 p.p. £1.00.G8 PANELS (Tested) Power £12.50, Scan £15.00, Signals £15.00 p.p. 0.50.KT3, K30 PANELS, tested, exchange, sound, power, bridge rect. frame. RGB£7.50 each. Decoder (Non -text) £10.00 p.p. £1.511.CII TDA2600 IC HOLDER 70p p.p. 30p.GII PANELS (tested), frame. IF. decoder £12.50 each. p.p. [2.00. Scan £15.00p.p. £2.80. Power tested exchange £18.00 p.p. £2.80.CII PANELS EX -RENTAL (untested) Scan, Frame, Decoder £2.50 p.p. 12.00.C II IF PANEL (new) less Tuner £2.50 p.p. £1.30.(:11 8POS Touch Tune Channel Selector (replaces old type) incl. instructions£25.00 p.p. 11.80C9 POWER SUPPLY UNIT £5.00 p.p. 12.30.HANDSETS EX -RENTAL, TEXT UNTESTED. KT, TEXT/VIDEO TYPE £3.50

PIIANtlLSfIA). p.p. 80p. K35, 2A, 2B. CP90 £3.50. KT3 £4.50, CTX-E, CTX-S. CFI£1.50. KT4. K4)). 3A £4.50 p.p. 12.50.

THORN/FERGUSON SPARES8000, 8500, 8800, 9800 PANELS tested, exchange. £8.80, Frame,Decoder £10.00 p.p. £2.30.9000 Series IF/Decoder tested £10.00, Line/Power £20.00, Frame £18.00 p.p 12.80.9500/9600 Line Scan £25.00. Power £20.00 p.p. £2.80.TX9 Panels complete & tested £28.00 exchange (shop only)TX9/TX10 Facia, control panel incl. infra -red receiver £5.00 p.p. CACTXIO Focus control £8.50 p.p. ELM.TX9/TX10 Saw filter IF panel £5.00 p.p. 80p.TX9/TX10 Remote & tuning control panel 1515 (incl. SAA5012) £7.50 p.p.TX9/I0 Remote & tuning 1508A (incl. SAA5012) £2.50 p.p. £1.81).TX9/I0 Remote & tuning 1536 (incl. SAA5012. SL471) £3.50 p.p. £1.80.TX Sweep Tune 15(19G (incl. UAA1008 + BATT.) £3.50 p.p. £1.811.TXIO Stereo Audio Board £3.50 p.p. [1.80.TX90 2W Chassis. Brand new £25.00 p.p. 12.80.TX10/TX90/TX100 Chassis complete & boxed (untested) £20.00 p.p. L2 N

IC SELECTIONLANNI 11.80 5L1430 £1.80 TDA 1170 £2.20 TDA2564 £3.110 IDA3571 £4.80LA7WI1 £3140 51.I433 £1.20 TDAI 010 12.20 TDA2595 £4.80 115A3575 E5.110

M293B 1 L5.80 SW/622611N £1.110 TDA 119117 £2.20 MA26011 £7.541 1 0A36511 35.110M(130021' E.5.80 SN176705 £9.80 TDA1470 £2.80 10A2611 A £1.90 1DA3651 £4.20M1_237 £3.80 5TK5325 £6.80 1'00 16700 £1.20 1 INA26411 £3.20 TDA3652

2

M1123£6.80MI

L4.110

STK5471STK5481

£6.50f8.80

WA 1701TDA 1770

£1.80L1.20

10036530E1A2654

£1.20L5.70

1DA3653AEDA365113

£5.90£3.20

SAA 11124 £5,140 \I K7111.9 VISO 1 DA 1670 £6.80 1.1)02655 £6.140 1)1A1,54 £3.211SA A 11125 E.5.140 STK7345 £10.80 'FDAn8A4 £2.80 1DA25711 £3.20 IDA4420 £2.211SAA 1124 £3.50 STR441 £7.811 -IDA 19411 £3.211 TDAN9 I £3.811 I DA442 I E3.215AA1251 E6.110 STR450 £6.811 TINA 1950 £3.50 1DA26911 £3.10) 115A4443 £6.80SAA3027 L5.80 Si43451 £5.80 7002141 L1.20 I DA2780 L1.50 111045110 C.5.80SAA50011 C2.80 S143421 1 16.110 1002370 £2.10 10A31911 £4.20 11)A45111 £6.811SAA50111 £9.10 S14501111 £8.00 10A25111 /6.80 10A13111 16.80 E0A4501 £5.80SA A51112 £5,410 STI460211 £5.80 1002522 f.3.80 TDA3.1111 £6.80 I DA46111 £2.811SAA511211 ESAU 113/3120 £1.20 70A254/4 £5.10 11)03330 £3.511 1D04601 £2.811SA A5030 £5.00 E00750 £2.20 11)0157 1 £3.00 I DA 3500 £6191 '1'11/646111 L1.811ti A511511 £0.80 11104.211 £2.20 TDA2576A OM MA.15111 £9./40 I DANN/ 16.80

5111035 £7.50 111/14511 £2.20 10A2577 £4.911 415035410 £2.50 I D.A3140 L1.000116137 £15.80 15.A270 £1.80 FD52577A £4.80 1.1)03541 £3.511 I 0A94113 L1.811

5A11031 £4.50 TCANNNI £5.30 11)A2579 £3.01) 10A3590 0.80 411A95111 £3.811SA1-1039 £2.20 IDA 10351 £2.40 I DA2579 L1.80 I DA3561 A L5.80 11)045 13 £4.80

1 4711, 471 £2.80 'FDA 11137 £1.911 71)02581 £2.20 TDA3562 A £5.80 .1EA 1009 32.2 0,S14m

£1.20 'IDA 1044 £2.90 I.1).52582 12.80 IDANIS L1.80 1) A11114 0.505) 4411 am FDA 116;2 0.80 I DA2593 £2.10 I DA 1566 OM EA21/IKA £2.20

IC p.p Sop

VARICAP TUNERS: Grundig 8630 series £5.00 p.p. f I .0t1. U32I, U322/U341/NSF204. ELCI)I43 (equiv), SC4, VHF NSF2O3 £7.80 p.p. £1.811. UHENHEUV411 £10.80, U343 £10.80 p.p. £1.00.

LINE OUTPUT TRANSFORMERSSONY KV I882 £34.50SONY KV2092/2096 £34.50FERG., HMV, MARCONI, ULTRA

R.B.M. T20. T22 Bobbin £5.60DECCA Bradford (state Mod No) £8.80DECCA 1)0.811 £8.80

1590. 1591. 1612. 1613. 1712 £4.80 FIDELITY ZX2INN1. 300 (Not 22") £15.50FERGUSON 3787 (Normende) £9.80 GEC 21111senes £10.60THORN 1600, 1615. 1690, 1691, 1790£9.00 ITT CVC 5 to 9. CVC20 £9.80THORN 3000/3500 SCAN. HIT £6.90 ITT CVC25. ('VC30 series £8.80THORN 80101 £12.80 ITT CVC45 £9.80THORN 9000109600 £9.80 ITT CVC I 200/1201 £12.50THORN TX9 £12.50 PIT 725 (90°173110741 £9.20THORN TX III,

SPECIAL OFFER£16.50 PHILIPSG8

PHILIPS G9£8.80£7.80

ITT V('3011 £4.80 PHILIPS KT3 £9.80PHILIPS 321) £2.80 PHILIPS K311. K15 £22.50PHILIPS G I I £5.00 PHILIPS CTX-E.S £22.50GEC 2028, 2040, 2100 £1.00 PHILIPS KT4/K4)) £22.90PVE 691-7 chassis type only £5.00 PHILIPS 2A £26.80R.B.M.T21. T27 £9.80 PHILIPS CFI £32.80LOPT's p.p. £1.50

TRIPLERS: THORN 9000 £8.80 p.p. £1.50.UNIVERSAL (best quality) £7.80 p.p. £1.50.CONTINENTAL TVK & BG RANGE (quote exact no.) replacements £13.80DECCAITATUNG £7.80 p.p. £1.50.63V CRT Boost Transformers for Colour & Mono £5.90 p.p. £1.40.455 CRYSTALS for Remote Control Handsets. 4 for £1.00 p.p. 50p.VHF to UHF Converters £26.50 p.p. £2.50.

CALLERS WELCOME AT SHOP PREMISESTHOUSANDS OF ADDITIONAL ITEMS, ENQUIRIES INVITED

LARGE SELECTION TESTED COLOUR PANELS POPULAR MODELS

Telephone 01-794 8751, 794 7346

MANOR SUPPLIES172 WEST END LANE, LONDON, NW6 1SD

PLEASE ADD VAT 15% TO ALL PRICES INCL P+P

COPYRIGHT© IPC Magazines Limited, 1989. Copyrightin all drawings, photographs and articlespublished in Television is fully protectedand reproduction or imitation in whole or inpart is expressly forbidden. All reasonableprecautions are taken by Television toensure that the advice and data given toreaders are reliable. We cannot howeverguarantee it and we cannot accept legalresponsibility for it. Prices are those currentas we go to press.

CORRESPONDENCEAll correspondence regarding advertise-ments should be addressed to theAdvertisement Manager, "Television",King's Reach Tower, Stamford Street,London SE1 9LS. Editorial correspondenceshould be addressed to "Television", IPCMagazines Ltd., King's Reach Tower,Stamford Street, London SE1 9LS.

INDEXESIndexes to Vols. 36 and 37 are available at80p each from the Editorial Office (addressabove).

SUBSCRIPTIONSAn annual subscription costs £20 in theUK, £24 overseas (by surface mail). Sendorders with payment to QuadrantSubscription Services Ltd., Oakfield House,Perrymount Road, Haywards Heath, Sussex,RH16 3DH.

BACK NUMBERSSubject to availability, copies of issuespublished during the last 12 months areavailable at £1.80 each from Television,Vouchcheck Services, Unit A6, PoplarBusiness Park, Prestons Road, London E149LR. Please make cheques/postal orderspayable to IPC Magazines Ltd.

QUERIESWe regret that we cannot answer technicalqueries over the telephone nor supplyservice sheets. We will endeavour to assistreaders who have queries relating to articlespublished in Television, but we cannot offeradvice on modifications to our publisheddesigns nor comment on alternative waysof using them. Correspondents shouldenclose a stamped addressed envelope.Requests for advice on dealing withservicing problems should be directed toour Queries Service. For details see ourregular feature "Service Bureau". Send tothe address given above (see"correspondence").

L.5

September Vol. 39, No. 111989 Issue 467

On sale August 16th

this month825 Leader826 Repairing Remote Control Units Nick Beer

You can make a reasonable -eturn and build customergoodwill be repairing and relovating remote controlunits. A guide to the various types and the faults toexpect with them.

831 You Won't Believe it ... Les Lawry -JohnsLes, HB and the menagerie have moved to thebungalow, where a strange welcome awaited.

832 Teletopics834 VCR Clinic

Reports from Piilip Blundell, Eng. Tech., John C. Priest,Eugene Trundle, Chris Plaice, HarvEy Benson, IanBowden, Alfred Damp and Nick Beer.

836 Letters838 Servicing Salora Colour Receivers, Part 2 Nick Beer and Ian Bowden

A start on the G and H chassis which were the first touse the Ipsalo circuit. The initial version of this isdescribed in detail.

841 An Inexpensive Orthomode Transducer Paul MatthewsOrthomode transducers are used tc split an incomingmicrowave sigral and tend to be rather expensive. Youcan get round this with a bit of plumbing.

842 Long-distance Television Roger BunneyReports on reception and conditions and news fromabroad. July was an exceptional month for SpE andtropospheric signals.

845 Tackling Unknown Small -screen Sets Malcolm BurrellCommon fault patterns in small -screen sets and how tofind your way around them.

846 The Sakura SR800ER Satellite System D.J. Stephenson, B.A., I.Eng.A review of this modestly priced system for receptionfrom Astra, with notes on the widely used Marconi LNB.

848 More on the Panasonic NV333 David BottoHow to tackle the power supply and the logic circuitryused in the syscon department.

849 Next Month in Television851 Books852 TV Fault Finding

Reports from Nick Beer, Gerry Hoey, J.G. Grieves, ChrisOrr, Alfred Damp, Ray Crockit and Ian Bowden

854 Dealing with Tape Chewing Eugene TrundleAn examination of the tape damage will usuallyprovide clear evidence of the cause of the trouble.

858 The Room at the Back J. LeJeuneWorkshop wisdom from Sid Bias's service departmentand some scheming over a scope.

859 Eye Protection David BottoVideo/TV workshops present many hazards to the eyes.Essential precautions to take to avoiid damage.

860 Servicing Compact Disc Players, Part 7 Joe CieszynskiThe informatior contained in the subcode and the errorprotection technique it uses.

862 Service Bureau863 Test Case 321

OUR NEXT ISSUE DATEC OCTOBER WILLBE PUBLISHED ON SEPTEMBER 20

:::::!:5!!!.!.:!:::::::55::.:::55:55!!5!.!!!!!!!!!!:!.:,:.. .

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814 TELEVISION SEPTEMBER 1989

LINEAR ICS-CootTEA -1002 11110p110-61 40pTL044 800TLO-71 3110TI.13-72 56p11.0-74 12pno -81 40pT1042 4110TLO-83 67pTLO-84 110pULN-2002 70pULN-2003 69pULN-2004 690ULN-2068 270pULN-2803 130pULN-2804 170pUPC -16C 160pUPC -20C 220pUPC -554 130pUPC -555 60UPC -55611 80pUPC -586 60pUPC -571 220pUPC -574 60pUPC -575C2 90pUPC -576 200pUPC -577 64pUPC -580 300pUPC -592 95pUPC -595 190pUPC -596 190pUPC 1001 220pUPC -1018 170UPC -1020 200pUPC -1023 60pUPC -1025 230pUPC -1026 95pUPC -1028 90pUPC -1031H2 180pUPC -1032 60pUPC -1158H2 759UPC-1167CL 17pUPC -1181 110UPC -1182 11pUPC -1183 200pUPC -1185H2 230UPC -1186 80pUPC -1187 150UPC -1188H 400pUPC -1197 140pUPC -1200 725pUPC -1222 13pUPC -1230 210pUPC -1238 120pUPC -1263 230pUPC -1277 240pUPC -1278 240pUPC -1335V 320pUPC -1350 115pUPC -1353 160pUPC -1363 190pUPC -1385 320pUPC -1360-1425pUPC -1373 55pUPC -1378 210pUPC -1382 11pUPC -1394 170pUK -1397 450pUPC-1403CA 7509UPC-1420CA 500pUPC -1458 100p

UPC -1604C 400pUPC -1505C 400pUK-1517CA 400pUPC -1525C 400pUPC -1536C 6600UPC -1571C 300pZN-423 100ZN-424 100pZN-425 320ZN-426 260pZN-427 660pZN-428 425p20429 215pZN-435 340p25-448 610ZN-459 190pZN -1034 17pZN-1040 640pZNA-134H2150ZNA-234E 920pJAPANESETRANSISTORS25A-473 36p254490 eop254-505 120p25A-509 120p204850 1 600254-5E2 50pISA-603 1 00p2544306 300p204-6138 15p254834 50p254-636 50p254-640 80p25A-673 20p254-684 60pISA-699 100254-7013 300p254-715 80925A-720 20p254-725 sow254-726 25p2M-733 309254-7474 600p254-798 660254-748 900ISA-769 130p25A-770 200p204-771 130254-781 150254-799 660254314 1 7 Op254-844 30p25A-872 40254-8724 60254-6362SA-893 890p09

254807 650p2SA-909 700p254-913 200pISA-916 30p254-921 50204833 402SA-934 40p2SA-935 40p2S4-937 40p254839 140925A-940 bOpISA-950 2592M-952 50p204-953 60p254-954 7592M-958 70p254-965 009254-966 70254-968 702SA-970 50p

2SA-979 85p254-504 50p2SA-992 309254-1006 120p258-1008 1259254-1009 200p254-1010 2250258-1011 140p25A-1012 100254-1013 100p254-1015 30p254-1016 40p254-1018 100pISA-1080 1509254-1009 150p254-1076 280p254-1084 100p254-1085 760254-1091 100p25A-1094 190p254-1102 180p254-1103 200p25A-1104 200p254-1105 25002S4-1106 250254-1111 120p254-1112 150p2SA-1123 70p254-1124 80254-1127 50p234-1133 2013p254-1141 360p254-1142 150p254-1152 1600254-1156 1509254-1170 5009254-1186 500p254-1196 70p254-1206 100p254-12013 70254-1209 100p254-1210 120258-1217 100254-1220 120p254-1262 160254-1263 290pISA-1264 2800254-1265 2310p25A-1290 150p254-1294 4500254-1295 500p258-1331 360p254-1302 400p254-1307 1160254-1317 30p254-1318 30p254-1329 200p25A-1346 30p254-1352 100p254-1353 100p25A-1356 100p25A-1370 100p254-1371 1009254-13130 100p254-1381 100254-1386 400p254-1423 30p254-1443 2600254-1489 300p254-1491 30025A-1516 30/39208.324 55p258-370 45p258-546 70p256560 36p258-561 60p258-582 35p258366 110258-595 110925B-596 75p258-596 1109258-600 500p2S5 -446A 90p2513-647 30p258-648 55p2513-649 40p255-688 120253703 125p255-705 200p255-707 200p256-716 30p258-718 70p258-727 200p258-754 80255-755 310258-772 45p25B774 50p258-775 160p253791 2300253795 60p255-825 135p2513861 160p250.882 180205-666 225p258950 180p256961 190258-1009 1109255-1077 180p266-1166 1002SC-3130 20p250382 120p2SC-31684 60p2SC-454 45p2SC-468 1502SC-460 10p2M-461ISC-495 630p0p

25C -515A 100p2SC-535 60p25C-536 20p25C-583 12025C-644 260250847 300p2SC-881 340250-683 12025C-710 20p2SC-711 40p25C-730 450p200732 40p2SC-733 25p25C-761 15025C-762 1502SC-783 106p250.790 130p2SC-792 380p250828 25p250829 20p250839 25p2SC8674 1502M-930 20p250941 26p25C-943 1800250944 1402SC-945 20p250950 40p2SC-982 50250983 1202SC-1000 80p2501012 7602SC-1014 14092SC-1030 1902SC-1047 alp250-1050 28002501080 90p2SC-1061 85p2SC-1070 66p2SC-1096 60p2SC 1106 180

2SC-1114 41502501115 210p25C-1116 200p25C-1161 110p2SC-1162 asp2SC-1164 60002SC-1172 11102501173 4602501195 21002SC-1212 12002SC-1213 Bap25C-1214 40p2SC-1215 80p2SC-1216 26002SC-1226 7002SC-1278 11025C-1279 30p2501306 90p25013091( 31002SC-1312 40p25C-1317 2502SC-1318 2602SC-1325 4002501327 20p2SC-1328 4092501342 120p2SC-1345 IlOp2SC-1358 3110p2501359 (1002501383 3502M-1384 3602SC-1390 51Ip2SC-1393 11025C-1396 7002501403 6002SC-1407 560025C-1413 240925C-1419 16025C-1424 4410p2501448 10025C-1448 100p2SC-1449 12002501450 200p2SC-1454 320p2SC-1472 4002501473 7002SC-1474 1202501475 00p25C-1505 11063

25C-1507 1402M-1509 4502SC-1514 61102SC-1515 (10p25C-1520 120025C-1541 11p2SC-1545 120p25C-1567 14002SC-1589 14002SC-1570 40p2SC-1583 30p25C-1586 MO02SC-1617 340p2SC-1624 140p2SC-1625 15002501626 1302SC-1827 (10p25C-1674 80p2SC-1675 200p2SC-1678 12002501664 4Sp2SC-1885 alp2SC-1729 110002SC-1730 40025C-1740 41102SC-1741 4192SC-1755 110p25C-1756 4002501758 30p25C-1775 20p25C-1781 Up2SC-1789 100p25C-1809 4002501815 lap2501819 140p2SC-1826 0092SC-1827 1202SC-1845 20p2SC-1846 10025C-1847 120p25C-11355 9025C-1870 700p2SC-187525C-1881 2102501890 45p2501804 121102501906 30p2SC-1907 75925C-1903 25002SC-1913 19025C-1921 80p2SC-1923 21025C-1929 1.pp2501940 1

25C-1941 40p25C-1942 120025C-1944 35002SC-19452501946 15000250-1947 450p25C-1957 70p25C-1959 20p2SC-1969 180p25C-1970 20002SC-1971 40002SC-1972 00002SC-1973 150p2M-1983 13002501984 1110p25C-1985 120p2001986 100p25C-2001 80p2SC-2002 40p2502003 alp25C-2004 SOp2SC-2021 40025C-2022 20002SC-2023 19028020213 80p2SC-2027 410925C-2028 7Sp2SC-2029 12002502053 120025C-2055 150025C-2056 46002002058 40025C-2060 90p25C-2088 flOp2SC-2071 14007SC-2073 7002SC-2075 90p25C-2078 06025C-2081 115002502085 100p25C-2086 GM2SC-2120 502502131 55002SC-2141 1501125C-2186 1110p2SC-2168 17192SC-2199 6002SC 2121 650p

2SC 22288 130p2229 25p

2SC 2230 80p250 2233 100p2SC 2235 60p2SC 2236 30p2SC 2237 600p2SC 2238 70p2562240 25p2SC 2258 120p25C 2259 80p2SC 2271 60p25C 2274 40p2SC 2275 6002SC 2278 120p2SC 2290 1800p2SC 2291 12p25C 2295 sop2SC 2298 120p2SC 2307 500p25C 2308 40p2502312 300p25C 2314 70p2SC 2320 40p25C 2324 120p2SC 2329 480p2SC 2331 1502SC 2333 2013p25C 2334 240p25C 2335 120p2SC 2344 150p2SC 2347 60925C 2353 120925C 2360 1202SC 2361 150p25C 2362 50p25C 2369 10025C 2371 45p2SC 2373 210p25C 2389 45925C 2407 1102SC 2408 120p2SC 24126 50p2SC 2413 50p2SC 2458 40p25C 2459 50p2SC 2470 65p25C 2481 12025C 2482 4025C 2483 1202SC 2484 2402SC 25® 8092SC 2519 60p25C 2527 300p2SC 2545 55p25C 2547 6602SC 2550 70p25C 2551 70p25C 2552 150p25C 2553 200p2SC 2555 15025C 2562 90p25C 2564 230p2SC 2565 260p2SC 2568 12p2SC 2570 60p2SC 2577 12p2SC 2578 220p2SC 2579 1302SC 2590 240p2502581 290p25C 2591 140p2SC 2592 200p2SC 2603 40p25C 2610 8502SC 2611 40p2SC 2621 90p25C 2625 380p2SC 2826 60025C 2531 65025C 2634 45p25C 2635 460p25C 2636 60025C 2654 1802SC 2655 75p25C 2656 660p25C 2660 16002SC 2671 120p2SC 2681 2702SC 2682 120p25C 26813 701325C 2690 120p2SC 2705 70p2SC 2719 80p2SC 2721 120p2SC 2738 200p25C 2740 450925C 2749 350p2SC 2761 400p25C 2752 140p2SC 2769 400925C 2774 60002SC 2785 60p2SC 2791 660p25C 2792 560p2SC 2808 40p2SC 2810 360925C 2812 40p2SC 2814 40p2SC 2834 400p2SC 2837 360p2SC 2939 4102SC 2853 70p2SC 2876 120p25C 2877 120p2SC 2878 40p25C 2898 400p2SC 2899 120p25C 2911 120p2SC 2912 120p25C 2922 610p2SC 2928 660025C 2929 280p25C 2944 62092SC 2979 320p2SC 2988 280p25C 2995 60p25C 3012 300p25C 3019 320p25C 3025 500p2SC 3026 560p25C 3039 1402SC 3340 260p2SC 3042 300p2SC 3060 900p2SC 3067 1 5092SC 3068 60p2SC 3070 120925C 3077 120p2503114 40p2SC 3117 12092SC 3130 100p2SC 3148 410p2SC 3149 180p2SC 3150 200p25C 3151 230p2SC 3152 250p25C 3153 32092SC 3156 400p2SC 3157 200p2SC 3158 26002SC 3159 200p2SC 3169 200p2SC 3173 180p2SC 3175 340925C 3178 340p

2SC 3170 113013

2SC 3181 240p25C 3209 120p2SC 3212 6102SC 3225 100p25C 3244 80p25C 3246 70p25C 3260 400p2SC 3261 500p250 3263 350p2SC 3264 610p2SC 3277 28025C 3280 300p2SC 3281 300p25C 3293 86025C 3296 120p2SC 3299 120p2SC 3303 170p2SC 3306 200p2SC 3316 25002SC 3327 av2SC 3331 40p25C 3333 12002SC 3356 90025C 3356 120p2SC 3358 80p2SC 3378 120p25C 3393 130p25C 3400 40p2SC 3402 5002SC 3416 80p2SC 3417 902SC 3419 12025C 3420 120p2SC 3422 11025C 3450 3502SC 3457 200p2SC 3459 250p2SC 3460 300p2SC 3461 400p2SC 3466 360p25C 3467 702SC 3468 70p2SC 3482 3013p25C 3502ISC 3503

120p90p

2SC 3504 120p2SC 3547 100p25C 35E8 200p2SC 3583 170p25C 3595 220p25C 3805 lOD2SC 3631 13092SC 3636 21302SC 3657 4002SC 3668 1202SC 3675 16025C 3678 280p25C 3679 200p2SC 3715 4502SC 3717 120p2SC 3719 1502SC 3746 120p2SC 3747 1202SC 3789 75p2SC 3790 1202SC 3795 200p2SC 3798 2202SC 3811 80p2SC 3832 200p2SC 3853 220p25C 3855 2802SC 3883 251302SC 3890 150025C-4020 2.1302SC-4242 2809250-4262 502SD-198 190p250-198 2.80p256200 2500250.201 260p25D-257 195p256313 40p250-315 75p250-325 45p25D-330 10p25D-348 4460p256357 40p250-359 40p250-371 240p250.390 650250.381 80p250-388 170p25D-389 90p256400 20pno4o1 600250-402 120p250-415 120p256424 400p256426 150256427 350256438 45p2513-467 60p25114138 25p256471 75p256525 70p250.626 70p250.545 GOp250.519 120p256-551 4009256555 500p256560 150p256571 SOp250-575 530p250-600 1100256601 40p25D-602 60p256612 100p250-613 70p256636 309256837 40p2013-6313 (10p256639 406.2510.640 3500250-642 CrOp25665561

110p60p

256625D-666 70p256867 70p2S0-668256669

120p40p

256673 360p256676 250p256716 1159250-717 180p256716 1013p256722 240p256725 400p256734 OOp256741 120p256743 130p256756 1006/250-757 120p206758 140p256762 140p250-763 140p250.766 130p256772 200p256773 40p

6774400p

60p25D-25777250-784 (1600256796 100p256-787 80p250-7813 100p

250.789 809256792 400p25D-794 100p250-7954 140025D-811 460p256819 400p256820 41101SD-821 5110p2S0-822 400p256826 100p250.836 1110p25D -836A 200p256837 80p250838 400256841 1000206844 2009256845 260256850 2600256856 80p256858 2600206863 800256-864 200p256866 120p2510.8664 140p2068138 450p256870 400p206871 4110p256879 110p2SD-890 40p230882 90p25643924 100p250.894 1200250-895 2019256896 200p2513900 400250-905 11100p2010.9113 130p250.917 300p256921 320p256923 380256946 120p256947 100p256950 300p250-951 350p2513-9574 5200206958 80pI50.965 1000250.970 1702S11973 60p250.973A 70p250-965 120p250-906 1200250-1012 120p25D-1021 120pISD-1022 400p2561024 1302510.1031 130p2561046 200p2561051 130p2561060 130p250.1064 2502561071 411492061073 360nal oe4 1120p250.1111 11002561128 200p250-1135 15025D-1138 sop2061159 90p2061160 150p251311634 220p250.1164 120p250.1168 425p2561169 280p2061185 400p2561186 400p25D-1189 125p2061190 150p250.1196 150p250.1207 50p2561210 28002561211 1202561225 120250-1229 250p25D-1237 300p2561248 2702561251 180p20D-1266 111013250-1272 200p

210-01 227753

10000p

2SD-1276 200p20D-1277 190p250-1279 1100p250.1289 300p250-1291 400p2S0-1292 60p2561297 426p2561308 14002561309 14002561310 140p2561326 20092061328 (1002561347 70p250-1348 55p200-1350 160p2561376 125p250-1379 100p250-1380 100p2561383 1002061390 35025D-1391 450p2561392 111p2061395 11102061396 24025D-1397 260250-1398 210p250-1399 300p2561400 2.160p2061402 2802561406 120p2561407 160p250-1409 190250-1415 19002013-1425 43192561426 3110p2561427 3502561428 450p2561429 410p250-1430 2180p250-1431 400p2561432 GOOp20D-1433 7160250.1438 140p25D-1439 320p25D-1441 440p25D-1448 1402$D-1450 60p250-1451 260p250-1453 1 70p250-1455 320p2561457 2202561459 120p2561468 602561496 460p2561497 460p2061505 120p2591554 40025D-1555 4502561576 450p25D-1577 488025D-1579 1202513-1591 310p250.1595 160p2S0-1604 2009

2561608 210p 2561941 600p2561609 100p 2061984 11002013-1632 500p 253-49 4215p2561649 260p 253-50 423p2561651 270p 253-77 350p2561663 4509 250-19 4192561666 120p 250-49 50p250-1667 1209 250-56 10092561668 120p 251(68 100p250-1677 300p 250-134 4159250-1739 4509 251(-135 4119250-1783 100p 250-147 16492561815 100p 251(-192 4169

2561825 120p 250-195 154102561843 100p 250-197 141552561846 350 25K-312 711110

2561884 3009 200-323 131102561910 2130 351(38 700

VIDEO HEADS

JVC/AKAI/FERGUSON 3HSS(For all Models) £14.00NATIONAL PANASONIC4HSS = 33 -ISSN £14.00INV322, NY332, NV340, NV2000, NV2010, NV7000.NV8170, NV8200. NVE1400,NV8600, NV8610, NV86201

AKAI

VS 109/201/202/301/303 £24.00

BRIDGE RECTIFIERS

W005 181.00woi 14/1005WO2 14/200VWO4 14/400Vwoo 1446000W013 1A/800V130810 2A/100VBR820 24r200V05840 2A/400VBROOD 28/6000BRESD 288001/BR32 3N200VBR34 34/400VBR36 38600VBR62 6A/200VBR64 64/4005BR251 254/10011BR252 25812005BR254 25814005138256 2544813135

BR258 254/800V138351 354/1000BR362 354/200V130354 358400508356 354/6005BR358 .3647800VBYI64 1381001/BY179 1.54/9000

14p15p19p21p24428p33p33037p4304304304304401100720

150016449111092001.240918502000720.230p260p

4096sor

AMSTRAD

VCR 4500, 5200. 9000 VCR 7000 £19.90

FERGUSON

3V32/JVC H R76553V42/44/45/44247

f38.00£21.00

FISHER

FVHP510/520/530/615/620/622/710/715/720//21/722/910FISHER VBS 7100NBS 7500FISHER VBS 9000/VBS 9900FISHER VBS 7000

£20.75£29.00£29.00£30.00

TRIACS

TIC2060 484005TIC2250 - 6.4/400511C2260 - 54/400VTIC2360 - 114/400VTIC2460 - 16A/400VTIC2630 - 2081400VT1C2630 25A/400VT28000 8814005

6006106191359

10591110p2019

112p

HITACHI

VT11/14/33/61/63HITACHI VT7-17. VT35-38, VT39HITACHI VT19

£20.00£38.00£38.00

HITACHI VT120, VT 220 £31.50HITACHI VT3000 f14.00HITACHI VT5000. VT 5500 £20.00HITACHI VT65, 7000, 8000, 8300, 8500, 8700, 9300,VT9500, 9700 £20.00

NATIONAL

THYRISTORS(SCR's)

20.50612N.5067253064C106DT1C116CT1C116DTIC116114

TICINO11C126M2N.4444681031311303

0T106131118BT11901121TIC44TICA5TIC4717088170691712715/80H15/856SG613

0.846050.98110000.8812005

4A/400V48730059A/40058N600V

12A/400V12N600V

20925029p28959p70p7Sp75p90976937p859

ISOp80p

100p120

22p27p12p

200p200p200p230p230p850p

UHF TUNERS* U32210* U341 U342

600p

NV 77 7/NV 330NV 430/NV 460NV 730 4 HEADNV 366 4 HEADNV 180 PORTABLE 4 HEADNV 370/NV 380NV 788/NV 810NV 850/NV 870NVG 15NVG 30NVG 33, NVG 45, NVG 46NVG 40, NVG 130NVG 400

f26.50£21.00£30.50£30.60£41.00£18.00£43.50£50.00f41.50f28.00£41.00£28.00£42.00

SANYO

VTC 5000, VTC 5400, VTC 6000,VTC 6600VTC11.110/11/2011/25/30/31/35/40/50VTC 5100, VTC 5150, VTC 5300VTC 5350/5370, VTCNX 10/15/20130,VTC 5550VTC 5100, VTC 5150, VTC 5300VTC 9100/9300/9455/9500VTC 9350/9355VTC 5500

£28.00

£28.00

f28.00£28.00f30. 50f30. 50£30.50

000p 6009 SHARP

VIDEO LAMPS

UNIVERSAL VIDEO LAMPS12V.60 rnA 1300mm WIRES/RED OR BLUE

VIDEO LAMP FOR PANASONIC

VC 381, VC 383, VC 386, VC 387, VC 388. VC 482.VC 483 £19.00VC 486, VC 3300, VC 8381, VC 9100,VC 9300, VC 9500, VC 9700,VC 582, VC 583, VC 651, VC 681, VC 750. VC781 E19.00

60p

CASSETTE DC MOTORS

6v

12V CW12V CCW13.2V CW13.2V CCW

240p240p240p240p290p2300

CASSETTE TAPE HEADS

MONO HEADSTEREO HEADMINI HEADAUTO REVERSE HEAD

90p150230p2130p

UNIVERSAL TRIPLERSSONY ON/OFF SWITCHESPHILIPS SWITCHES

030, K36.1(40, Kn. 074

450p200p150p

SONY

DSR-35R IFOR C20, 30. 40 SLF1,SLF1E)DSR-43R (FOR SLC7 RANGE SL 5000,SL 5100, SL 3000)

SLF1UB,£19.00

E10.50

TOSHIBA

V21089600 E22.00

GRANDATA LTD

FOR ADDRESS & PHONE

PLEASE TURN OVER -÷


VCRPINCHROLLERS

AKAIVS9300, VS9500, VS9700,VS9800 280pVS1, VSZ VS3, VS4, VS5, VS6,VS9, VS1O 360,AMSTRADVCR4500. VCR4600, VCR4600Mkt, VCR4700 280pVCR5200 360pVCR7000 360p

FERGUSON3V00, 3V16, 3V22, 3V23 280p3V29-30, 3V31-32 280p3V35-36, 3V38-39, 3V42-43,3V44-45, 3V48, 280p3V53, 3V54-55, 3V56-57, 3V58-59,3V64-65, FV10-11, FV12-14

HITACHIVT11, VT33 280pVT61-62, VT63-64, VT65,VT86-88, 280pV7110-122, V7120-128, V7130-135,VT138-150, VT168,-220V75000, VT8000, 1/79300,V79500 280p

.NCHR3300, HR3330, HR3360,HR3660, HR4100, HR7700 280pHR7200, HR7330, HR7660,HR7610, HR7650, HR7655 280pHRD110, HRD111, HRD120,HRD121, HRD140, HRD150 280pHRD160, HRD225, HRD455,HRD565, HRD725

MITSUBISHIHS200, HS300, HS301, HS302,HS303, HS304, HS310, 280pHS320, HS700

NATIONALNV100, NV180, NV300, NV333.NV340, NV366, NV600, 2804NV777, NV788NV230, NV370, NV430. NV460.NV730, NV810, NV830, 2130pNV850, NV870, NV890, NV2000,NV2010, NV3000, NV7000,NV7200, NV7800. NV8600.NV8610, NV8620, NVG14NVG7, NVG10, NVG12,NVG18 3604NVG21. NVG25, NVH65 360pPHIUPSVR6460 280p

SANYOV1-1191100, VHR1300, VHR1500,VHR2300 360pVTC5000, VTC5150, VTC5500,VTC9300, VTCM10. VTCM20280p

SHARPVC381, VC386, VC2300, VC3300,VC7300, VC7700, VC8300 360pVC9100, VC9300, VC9500, VC9700VC387, VC481, VC482, VC483,VC486, VC496, VC581 360pVC582, VC583, VC585VC651, VC68I, VC685, VC750.VC780, VC781, VC785,VC787 360pVC79 3. VC172

SONYSLC5, SLC6, SIC? 360pSLC9, SLC20, SLC24, SLC30,SLC33, SLC44, SLHF100 380pSLF1, SLF11, SLF25, SLF30,SLF60, SLF100

75 OHM COX CABLE WITH SOCKETS FOR TV TO VIDEO BLACK COLOUR 2 METRES LONG, ONLY C1 EACH -t VAT ****** * * * * * *

FERGUSON

3292. 3V00, 3V011503V16, 3V22, 3V23653V29/301203V31132853V35/36803V38-39803V42/43653V44/45653V45/54653V5565

FISHER

VBS-7000245VBS-9000120

HITACHI

VT -11, VT -33100VT -5000120VT -5500130VT -800060VT -850060VT -930050VT -950050VT -970060

JVC

HR -3300, HR -3330,150HR -3360, HR -3660,HR -4100180HR -720070HR -760080HR -761095HR -765075HR -765590HR -770077HRD-110, HRD-111,100HRD-120, HRD-225HRD-250, HRD-455,l00HRD-565, HRD-566, HRD725,HRD-755

VIDEO MOTORSAMSTRADVCR -7000 REEL MOTOR1700

FERGUSON & JVCCAPSTAN MOTOR2100PU-45979CAPSTAN MOTOR1950PU-55371VDRUM MOTOR1950PU-46414REEL MOTOR2650PU 51381V2650

NATIONALREEL MOTOR1350MYN-135V5LFOR NV333, NV366

SANYOREEL MOTOR7004-529V-10800

SHARPREEL MOTOR1500RMTOV 1008 GEZZ

SONYCAPSTAN MOTOR700A -6751131A FOR SLC6CAPSTAN MOTOR2500BHF 11000 FOR SLC7

VIDEO LAMPSVIDEO LAMPS UNIVERSAL3012V60mA (300mm WIRES)PANASONIC VIDEO LAMPS60

MITSHUBISHI

1-15-200200

NATIONAL

NV -300160NV -333135NV -777100NV -2000150NV -3000160NV -700095NV -720090NV -8600160

PHILIPS

VR-6460170

IDLERS & PULLEYSREPLACEMENTS

HITACHIFF REW IDLER6886971PLAY IDLERV-6861482

190p

320p

JVCIDLER ASSEMBLYPU-47752 450pTAKE UP IDLERPU-51402A 145pTAKE CLUTCHPU-55373 225pIDLER ARMPU-55373-3-8 285pFAST FORWARD IDLERPU-45896C 210p

NATIONALIDLER 200p

SANYOREEL PULLEY143-0-6627-01201 5204

SHARPIDLERNIDL0005 GEEZ 195pIDLERNIDL0006 GEEZ 195p

SONYREW. PULLEYA -6706-348-B 400pREW. PULLEYA -6706 -391 -NB 300p

SANYO

VTC-500075VTC-5300100VTC-550095VTC-9300220

SHARP

VC -381/383/386125VC -6300150VC -7300/7700/7750150VC -8300150VC -8381, VC -9100125VC -9300, VC -9500135

VCR BELT KITSAKAIVP -7100 1604VS -1 1504VS-2EG 1004VS -4 120pVS-5EG 100pVS -9300 1604VS -9500 155pVS -9700 1604VS -9800 155p

AMSTRADTVR-1-2.3 210pVCR -0600 & Mk 2 210pVCR -4700 2104VCR -5200 2104VCR -7000 80p

SONY

SL -05, SL -C6140SC -C7140SC -C9165SL -8000-8080200

TOSHIBA

V-55/5785V-5250/5280230V-5480210V-5475160V-7540160V-8600150V-960085

SEE PREVIOUS PAGES FOR MORE

GRANDATA BARGAINS

SERVICE AIDSSERVISOLPRODUCTSV. HEAD CLEANERSWITCH CLEANERSILICONE GREASEFREEZE ITFOAM CLEANERANTI -STATICAEROKLEANEAFRO DUSTERPLASTIC SEAL

If you purchase moredamn one Sondeol

product postage willM E2.00

100p115p135p1254120p120410041254115p

* * * * * * * * ** UNIVERSAL ** TRIPLERS *

450p* * * * * * * * ** * * * * * * * ** SONY ON/OFF ** SWITCHES *

200p* * * * * * * * ** * * * * * * * ** PHIUPS ** SWITCHES *

150p*K30, K35, K40, KT3, KT4** * * * * * * *

00006 SERIESCMOS IC'.4000 13p4001 1344002 13p4006 34p4007 13p4008 38p4009 20p4010 21p4011 1394012 13p4013 19p4014 32p4016 113p4017 29p4018 30p4019 28p4029 33p4021 36p4022 38p4023 13p4024 25p4025 13p4026 80p4027 18p4028 29p4029 34p4030 17p4031 90p4032 52p4033 80p4034 78p4035 42p4036 18044037 75p4038 46p4039 18044040 30p4041 36p4042 30p4043 36p4044 36p4045 72p4046 42p4047 45p4048 27p4049 18p4050 20p4051 38p4052 35p4053 35p4054 53p4055 52p4056 52p4060 4044063 52p4066 20p4067 120p4068 13p4069 13p4070 13p4071 13p4072 13p4073 13p4075 13p4076 42p

7713p

4078 13p4081 13p4082 13p4085 38p4086 30p4089 75p4093 18p4094 44p4095 58p4098 50p4099 42p4501 27p4502 36p4503 30p4504 55p4505 180p4506 58p4507 30p4508 87p4510 32p4511 30p4512 38p4513 80p4514 85p4515 85p4516 36p4517 100p4518 36p4519 28p4520 36p4521 813p

43p44552226

38p4527 41p4528 38p4529 85p4532 48p4551 75p4553 14044555 29p4556 36p4557 140p4583 6044584 30p4585 40440100 120p40101 78p40102 150440103 120p40104 80p40105 140440106 35p40107 50p40108 260p40109 74p40110 170p40114 180940117 180p40147 240440160 55p40161 55p40162 55p40163 55p40174 48p40175 60p40181 170p40182 70p40192 48p40193 48p40194 68p40208 240440257 120p

74 SERIES7400 20p7401 1897402 13p7403 2p7404 35p7405 10p7406 36p7407 36p7408 25p7409 20p7413 30p7414 415p7416 40p7417 32p7420 22p7421 2547425 1547430 2547437 2847438 32p7442 3847447 0047450 22p7451 10p7454 2647470 30p7473 2647474 35p7475 25p7481 9047482 60p7485 28p7486 2847489 75p7490 35p7492 45p7493 Up7495 48p7497 80p74107 30p74111 52p74116 Up74119 85p74122 40p74123 20p74125 40p74126 45p74132 42p74141 65p74145 70p74153 45p74155 45p74157 45p74160 30p74164 50p74167 35p74173 50p74174 30p74175 85p74176 45p74180 50974182 45p74192 40p74196 40p74197 45p74393 70p

744C SERIESHIGH SPEEDCMOS744000 144744002 14p7411003 14p744004 15p744008 18p744010 20p744011 144744014 26p744020 19p744021 20p744027 20p744030 20p744032 20p744042 30p7461051 20p744073 24p744074 24p744075 28p744076 28p744077 35p744E35 33p744086 29p744C93 513p7440107 28p7440109 28p7440112 28p7440113 28p7440123 35p7440125 3297440126 33p7440131 36p7440132 33p7440133 33p7440137 82p744C138 33p7440139 22p7440147 42p7440148 38p74I -1C151 32p740C153 32p7440154 90p741-10155 484744C157 34p7481C158 34p744C160 44p744C161 44p74HC162 44p744C163 44p744C164 04474HC165 56474HC166 60p74HC173 52p761C174 38p74HC175 38p74HC181 180p7440182 80p7440190 4047440191 55p744C192 53p7440193 41p7440194 46p74110195 469744/C221 80p7440237 50p7440238 55p7440240 48p74110241 47p7440242 55974HC243 60471HC244 44p7440245 48p

7440251744C2537440257741402587440259744027374110279

25436p40p50p52442p35p

7460283 131p7440298 50p7440299 105p

38p48p34p36p38p38948948p52p52p20p50447p65465p131p70p70pClOp

748C564 80p74110573 58p74E10574 65p744C583 90p744C595 85p7440597 130p744C620 1113p744C623 110p7440640 90p7440643 90p7440646 120p7440549 1213p74HC651 100p74HC652 100p74HC670 75p74HC688 8047440690 110p7440691 110p744C4002 259741404015 85p74404016 75p74404017 48p74604020 50p74604022 40p141104024 34p74604028 40474HC4040 34p741104049 38p74404050 38p741104051 85974404052 859744C4053 859741104059 85p74604060 33p741104066 33474404072 31p74404075 2897414040713 32p741104094 50p74404316 100p74404351 1 10974404352 160p74404510 120p74404511 70974404514 120p744C4515 120p74E104516 125p74E104518 55p

60p74E104538 75p74404543 75474E107266 75p744022106 5809744040104 190p74HC40105 250p

74403547440356746036574110366146036774403687414037374403747440375744037774403867440390744039374404237440533744053474405407440541

74101147415122741012374151247415125741312674101327410133741513674131387415139741.514574151477410148741315174101537413154741315574151567415157741515876.516074151617415162741518374151647415165741.0166741S1687413169741317074131747413175741319074131917415192741519374131947410195741319674151977415221741324074132417415242741524374102447410245741024774152487415249741325174152537415256741325774152587413259741 0260741526674102737410279741 0280741528374132907410293741336574/S36674163677415368741537374103747415375741539074153937410399741562974106417415642

741S645741567074106747415687

25935435p55430p30p30p30430p28928p66p90475427p31p70434936422427p38438938p364341450455460p55468430432p47p43,41p41p41p44p48442p46p46,42p43450440p40440440470424p36452432p35p50p30p22p94p33988451p26p20926031p28430445445946p42437p684954

1054884

10541054

62431042504

8255825682578259827162726279828282838284

200p1200p

22042004

340041200p

2704300440044404

8288 55048748 1100p8755 14004473-1015 29045P02513.132 1500p2804CPU 150pZ8OBCPU 4004280ADMA 5004Z804F10 220p2806P10 340pZEIOACTC 200pZEIDEICTC 320p280A510 4404ZBOAS10-1 51104ZE1136P10-2 5004ZBOADART 5004745289 180474.5387 200p75107 (16475110 75475113 100p75122 110475150 95475154 100475152 700p75182 95475183 964

75188 55p75189 55p75195 185p75451 40p75454 65075492 5548726 96p8728 110p

OPTOCOUPLERS

4N254N254N27452845294530453145324N33453645374638

50p50p50p50950990p90p

100p100p1584

584584

LEA) DISPLAYS

MAN.72 1154MAN.74 1154MAN.4640 1804MAN.8910 230401.747 1604

SOLDERING IRONANTEX XS25W 24011 Soldering Iron240VM 5409Spare Element for 302500 240V 2604ANTES C15W 24050 Soldering Iron24060m 5404Spare Element for C15W 2400 2004

DESOLDERING PUMP

SOLDERING IRONANTEX XS25W 240V Soldering Iron7400.0 5404Spare Element for 3025W 2405 2504ANTEX 015W 240V Soldering Iron240Vcrn 5004Spare Element for C15W 2400 2604

745.5 SERIESLOW POWERSCHOTTKYT.T.L41500 1441501 1441502 12p41003 14741004 12p41505 12p41508 12p

741509 14p41610 12p41011 12p

741512 12p41013 20p41014 24p41515 14941520 14p41021 14441 022 14p

741524 359741526 14941027 14p41028 14p41330 14p

741532 15p741033 154741331 15p41338 115p41340 15p

741542 25p741547 52p741048 48p

77111-_r4 13913p41355 15441073 24941074 18p41375 24p41576 249

741378 24441583 37p41585 37p

741086 26p741090 26441591 55p

7:13 32p264

41095 41p41596 524

7413107 28p410109 28p

7410112 28p7413113 28p

COMPUTER

21142532271627322732A276427034271282625625 400p41256-12 450p256DRAM 450p4116 75p4164 150p6116 180p62646502 3400p00p

6502A 400965002 930p6503 570p6520 170p6522 330p6630 105096532 480p6545 880p6551 530p6830 210p6802 220p6803 800p6808 500p6809 800p6810 150p6818 380p6820 14096821 140p6840 310p6845 820p6850 110p8080A 400p80854 300p8086

50500p0p80888155 380p8156 380p811095 120p811096 130p811397 130p811098 130p8224 240p8226 240p82213 270p8243 250p8250 85098087 11000p8251 270p8253 230p

200p330p200p280p300p240p550p

DESOLDERING PUMPDesolder Pump 2904Spare Nozzle 60p

OLDER MOP 054

SOLDER18 SWG 500g20 SWG 500g

50046504

SOLDERING IRONSTAND

Soldering StandSpare 0006917

2004404

FLOPPY DISCS51/4 inch DSDD (10 in box/ BrandedName £7.5051/4 inch DSDOlbuIle pack) 25 E10.0031/3 inch 0500 110 in box) BrandedName £13.003 inch CF2 Branded Name C2403 inch CF20 Branded Name E3.00

PLEASE PHONE US FOR TYPE NOT LISTED HERE AS WE ME HOLDING5000 ITEMS AND QUOTATIONS ARE GIVEN FOR LARGE QUANTITIES.Please send 70p PSP and VAT at 15% Govt. Colleges, etc. Orders accepted.

Quotations given for large guantrbes Please Mow 7 days for dolmen/ Al brandrumComponents. All valves are new and bored Pnces quoted are subject to stockavailability and may be changed smthool nonce

GRANDATA LTDK.P. HOUSE, UNIT 15, POP IN COMMERCIAL CENTRE,

SOUTHWAY, WEMBLEY, MIDDLESEX, ENGLANDTelephone: 01-900 2329 Telea No: 932 885 (Suomn)

Fee: 01-903 6126Access 5 01sa Card accepted. Open Monday to Saturday


P. V. TUBES104 ABBEY STREET, ACCRINGTON, LANCSTel: 0254 36521/32611/390936 BB5 lEE.Telex: 635562 Griffin G (For P.V.)Partners S. & B. Cucknell Fax No.

24hr. answering service 0254 395361

TRADE

COUNTER

OPEN

MON-FRI

9am-5pmSAT

9am-4pm

NOW TO MOENUp to 1K ADD £1.00 per orderP +P (U.K.). Heavier parcels e.g.cable, service aids. degausingcoils please allow £325 P + P(U.K.). Export orders charged atoast. First Class Mail is usedwhenever possible. Add 15% VATto total except where it states zerorate. Bulkier items will be sent bycarner £8 50 + VAT up to 25K(except tubes).We do not despatch on Saturdays.

MERE IS YAT ON P+P.

BOOKS AND MANUALS ARE ZERO VAT.Goods are despatched on the day we receive your order.If for any reason we are out of stock we will try to informyou as quickly as possible. We try our best to give aspeedy, fair and efficient service. V.A.T. Invoice Onrequest. Give us a ring - we'll give you service. Pleaseask it what you need is not listed - we will try to help.Prices are sultect to change without notice. In somecases we may have to supply an equivalent.We need expiry dates for credit card orders.MINIMUM ORDER £5.

VIDEO HEADSPRICES DOWN AGAIN

3HSSVFERG/AKAI etc 16.50

3HSS14 NAT PAN 16.50

WE HAVE A FULL RANGE OF VIDEO HEMP-, INSTOCK FOR MOST MANES JUST ASK

NEW TYPES ADDED RECENTLY

ALBA NUSOBGOLDSTAR NISSINIHIRAMVXL2 NISSAAL/ RESER

1/XL5 PSF1

VXL6 PSF2

VXL35 311888

SAMSUNG UNIVERSAL

26.0026.00

25.0025.0025.0025.0025.0024.45

TAKE UP IDLERS/CLUTCHASSYAKAI MI32773ANAl BV3278I5AMSTRAD 7000VHS gen THORN/JVCFISHER 490100300

FISHER 420100300400FE% 3292 F/FFERG 3V00 F/F

FERG 3V00 TAKEUPFERG 3V00 TAKEUP latefERG 3V16 TAKEUPFERG 3V16 TAKEUP late

FERG 3V22 TAKEUPFERG 3V22 TAKEUP lateFERG 3W9TAKEUP CLFERG 3V29TAKEUPSRFERG 3V29 TAKEUP 101FRG 3V35 SR CARRHITACHI F/F 6886971HITACHI 6413663HITACHI 6114221HITACHI 6383531HITACHI 61361471HITACHI 6861482HITACHI 6345173HITACHI 6886871HITACHI WINO ROLLER

NAT PAN VXP0463NAT PANVXP0243NAT PAN VXP0401NAT PAN VXP0344NAT PAN VXP0331NAT PAN VXP0521NAT PAN VXP0433SANYO RELL DRIVE PULSANYO 5000 ALA ASSYSAMSUNGSHARP 0005SHARP 0006SONY sicsarwoo

s.634.872.204.953.954.501.461.461.955.854955.851.955.852082.131.442.552.902.685.040.702.435.020 402.900 783.201101 081.221.284.185.585.111.161.752.212.211.27

WE HAVE A FULL RANGE OF MOTORS, TYRES,BELT KITS, LAMPS etc IN STOCILPLEASE ASK FOR CATALOGUE

REMOTE CONTROLSTHORNTERG TV 13.00

THORVERG VIDEO31123 IR8817 14.9531131 IR8945 14.95

3V35 IR8946 14.95

3V43 IR8947 19.12GRANADA UNIVERSAL 16.50PHILIPS

G11 TXT IR8435 13.50G11 TXT US31 BUTTON 29.42

G11 NON TXT US8263 16.50

G11 2 FUNC US8518 16.50KT3/30 NON TXT IR8331 15.15KT3/30 TXT IR8420 16.50

RC5 REPLACEMENT 13.95

PLUS MANY MANY MOW,

SATELLITE EQUIPMENT

SAKURA ASTRA SYSTEM

DISWLNB RECEIVER 199.00RG59 CABLE 100M 19.95

RG6 CABLE 100M 29.954 CORE POLAR CABLE 10.50F CONN RG6 0.10F CONN RG59 0.24

F CONN SCREW ON 0.35

F LINE CONN 0.45

CRIMP TOOL 29 95

COMPASS 600SAKURA STEREO SYSTEM 229 00

SIGNAL STRENGTH METER 53 92

AND A COMPLETE RANGE OF AERIALSAND ACCESSORIES ON PAGE 23 IN

CATALOGUE

SERVICE MANUALSTo name but a few"'

FERGUSON

31106

3V22 SUPP TO 31100

31116

3V2431131

3V35,63V38SUPP3V39SUPP3V42ABRIDGED3V43ABRIDGED3V44'531148

31153

31154531158

31159

3V6451111011

FV1 IR

SONY

SLC5

SLC9143

NAT PAN 11 MANUALS

TC2616

TC2756TC3616TC485GRTC862G

PLUS FIDELITY. PHILIPS. GEC

12.001.00

27 7235 5421 5429 67

1 501 50

10 5010 50

89 9,13

9.9510 2010.9513.5013.007.953.95

11.2811.28

3.503.503.503.503.513.50

WE HAVE TRIPLERS, LOPTS, PUSH BUTTONFUSES, DROPPERS. STYLI, LEADS. CABLES.

SWITCHES

Thom '591

Thom 1X10/9 RemoteAs Above with SolenoidGen Pomose 4AG8 On/Off MetalG8 On/00 Plastic611 OrN011611 Orr011 RemoteRotaiy 311011 GenITT CVCS Or/OttAs Above with SolenoidRank 720 OniOttAs Move with SolenoidGEC 2010

KT3Philips 630Fidelity 70109 Front AtFidelity 70150 Remote

MS43 Fidelity 7017044512 Frdelity 70710 Rear 'AtAM 170002 CPC 464 Comp. SwitchAM 170306 CTM OnOft SwitchPM 190714 DMP 2(00 Power SwitchAM 150442 Amstrad VCR 7000AM 1400010 Amstrad CTV 1401AM 1422017 Amstrad CIV 22001-554-967-11 Sony KV14/2022/60 MS401-552116-11 Sony INGen. Power .

1-552-820-11 Sony IDrGen Power1-552-836-00 518000013

SlideRecPack1-552-834-00 518000118 Slide/Rec.........3-309-418-00 Sony WM4 Slop Eied3-651-542-00 SLC7 Control Knob _

kAT91

MS53MS14MS48gs10AIS01MS09AS0764S20litS03iitS02VS25MS20IA521MS05MS31MS30MS38

2.901.802.743.420.801.981.981.581.580.801.245.312.504.500.983.043.841.212.430.940.945.325.325.325.323.561.874.145.125.12

1.121.271271.27

ASSY CRTs, CAPACITORS, RESISTORS. POTS,etc ASK US

INTEGRATED CIRCUITS

SPECIAL OFFERSVHS E180 TAPE 110113a LAC() PLUGS (101AUDIOLINE PHONE 201AUDIOUNE PHONE TEL I

22.1111

3.7515.141

950

LABGEAR1717261 P U

CW262 P U

CM7065 UHFAfilf HO

C147066 UHF118

1787268 VHF H GAIN ARCI)1717253 BEHIND SET (MAINS!

0117243 SECOND SET AMP

C117093 THREE SET AMP

CM7063 DIST AMP VlifUlifC84710E47298 8+1 DIST AMP

CM9700 27MI4 CB SUPPRESSOR

1746011 OUTDOOR SPLfTTER

04900300 FLUSH 51101 OWLET

0119313301 FLUSH SING.OUT.ISOLAT

0119310 RUSH TWIN OUTLET

1749034 UHF RLIERS ADAM£19033 6 WAY PASS SPLIT

CW042 IV GAMES COMBINER.

0149009 FLUSH TV/FM EMULATOR

CM9306 1/71/UHF DIPLEXER

1717122 TELEVERTA UP VHF TO UHF

17I7057 TELEVERTA DOWN UHF4411

17/7211 DIST AMP UHFVHF

C117274 4 WAY DIST AMP

1717082 UHF VHF DIST AMP

C14708(110 UHf URA

1717271 Ulf VADEBAND 15 dtiC/45034 May VIDEO DIST AMP

12 39

135016.18

147417 57

161114 73

18.55

267719.96

4 90

3 63

1.45

2.36

2.47

1.1911.72

3.21

388417

41.9849 7324.9626 15

74 15

16.139

9.0910.21

ANTIFERENCEUNIVERSAL No .1 CLAMP 1.30

S811SPLMER 2.511

CS200 COMBINEFVSPLITTER 3.94

00611 OUTLET 0.96

PU1240 POWER UNIT 11.65

PU1300 /ANA 9.09

27MHz FILTER . 2.10

DIPLEXERS

MATCHED TRANSFORMER 2.83

XS2 XTRASET 14.46

XS044 WAY DA 22.50

X54/6

SUPER SET TOP AERIAL 6.513

CARATENNA AERIAL 7.20

TRAVELLER AERIAL 11.50

SILVER SENSOR AERIAL 7.40

XG8 HIGH GAIN AERIAL 21.00

POWER SENSOR AERIAL WITH AMP 24.95

MERCURY SET TOP AERIAL 2.30

LOOP AERIALS 1.00

COAX CABLE S540 100m 33.79

LABGEAR SATELUTE RANGE07451138 If Intern Del Pump 57.01

0/45110 IF Line Pump 17.11

1785112 Block Converter with PSU 143.34

SECURITY EQUIPMENTCONTROL PANELS

SHOP ROCK ACORN PANEL 32.50

WE HAVE ICs

eg STS548155(7308ST1(5332ST13501031

57858041

TRANSISTORS

131.1208A

803261.TIP4IC

2SC2335

THOUSANDS

5.507 164.205.009.30

3.953.853051.65

CIRCUIT PROTECTORSCPNIO 8.06PF20 6.00PF15PE38

PFIOPTE/F25

0.911

11.94

0.910.90

TTL, CMOS, DIODES, ZENERS, VOLT REGS.SOCKETS. LEDS, FILAMENT LAMPS,THYRISTORS.

WE ARE SPECIALISTS IN COMPUTER PARTSAND HAVE LOTS Of GOODIES NEEDED TOREPAIR SPECTRUMS AND COMMODORES.

SPECTRUM 48K MEMBRANESONLY

ULAROM

SPEC PLU MEMBRANESONLY

1.356.545.00

1.50

VALVES

30112 1.70DY802 0.98DY86437 0.66

1.60FCC& 0.98

1.230,80

ECC85 0.98ECC88 1.35ECF80 1.30FCR32 1.25EWI81 1.60ECH84 0.61ECL80 8.64ECLB2 1.30

4.74ECM 1.99EF813 0.95EE96 2.20EF183 1.98Ef1134 1.00

0.72EL90 1.75E134 3.50EU34 1.26EY86// 0.60EY500A 2.25E/813431 0.56GY501 1.456734 3.50KT66 1.756177 1.516788 Alt typ 12.00PC92 4.50PI31200 1.45PIFE108 1.63

PC315PIMPCF330PCF800001701PCF8132

PCF835PCL132

PCL84PCL805PCL86PF1260P136PL8tP1_84

PL5C4R.5(18PL5019/19PY88PY5(DAR'811111

UCH81UCLA)UYEt5

PLEIOL'T

41A(C6211_118

17D11143

3AT2A12877A6L6GC6L6G712867128H7A

1.651.401.001.351.311.131.121101.201.201.090.921.861.870.940.792.251.651.505.250.811.750.692.251.121.354.805933.114.505.003.753.682.813.205.25

We have in stock all isted Commcdore IC's.

COMPUTER IC'S/TRANS

LMGI21ROPLMAU9MAB80491101488

MCI489APA81SPEC 486 ROM01 ROM 2566CIL ROM 1286TC74HCO411151000IMM23128P-1951ULA6C001E (SPEC)ULA13057

2117400E.

5717438N74150074LS32741515774LS13271LS260251641-022732

2712827256RAM4118RAM 4116-1RAM 4116-2824982478271BBC UID ULA4164/4564-1541256-156502 COMMODORE65226264 COMMODORE

6510 COMMODORE6526 COMMODORE6561 COMMODORE6569 COMMODORE6581 COMMODORE8360 COMMODORE8501 COMMODORE8701 COMMODORE906114 PLA COMM901225 CHA ROM COMM901226 BAS ROM COMMM182/80182ITX213ITX211ITX313ZD(510Z11551ZTX65012D(750IS 2472

901227

7.241.753.490.750774.005.00

12.437.208.868 95

10.666.502.501.70

11 252.001120900 780 630 83

P.O.A.4.123.751.955.902.921.101.103.003.50

60.0015.00

2.008.953.504.007.507.078.511

7 7421.2512.0019.61

5.467003.378.710.070.150.170.240.390.390.270.380.31

10.44

N DETECTOR INTERNAL

817S SHORROCK 22.51

ORION 24.11

Our new range of external security lighting/PIR isnow in stock.

PHANTOM 240 PIR (Mains) 41.25PHANTOM SC Self Contained 240 PIR/Light with low

watt PL9 tube 34.511

PHANTOM PC 240V Self Contained Courtesy Lightwhich operates during hours of darkness 22.50ORION 5 PIR with built in halogen flood light 60.08

EXCELLENT VALUE

CASTLE PETITE PANEL

5 Zone/Keypad operated

CASTLE OMEGA 5E

5 Zone/Keypad operated 66.00

plus all the extras you may need to fit a completesecunty package.

WE STOCK CABLE, CLIPS, BELLS, BOXES,BATTERIES, SOUNDERS, BUZZERS, XENONS,

CONTACTS, SMOKE ALARMS. TRUNKING,PRESSURE MATS, FOIL BLOCKS.

49.95

TELEVISION WALL BRACKETSP5245 TELETW1ST TWIN

Articulated IV Wall Bracket12,207 Whits(Loadbeanng Cap 3664) 24.16

P6015 DESIGNER TWISTER12.-20' White(Loadbeanng Cap 3660) 27.00

P6041 LITTLE TWISTERSmall, ideal for BedroornAitchen14" Write(Loadbeanng Cap 1664) 14.88

NEW PRODUCTSMAINS SMOKE ALARM 19.50

ADAPTORS TO ALLOW BATTERY SMOKEALARMS TO RUN OFF MAINS 5.25

PHILIPS BACK UP BATTERIES

9 2.852.4V 5.65

4 WAY TRAIL SOCKET WITHPLUG &CABLE 6.75

RED MK4 REMOTE 16.95

SOCKET KIT FOR TDA2600 1 35

311313/39 LOWER DOOR FLAP 2.58

3V38/39 UPPER DOOR FLAP 95p

TEST METERSH1700 METER 20.000 RN.PHILIPS METER

10.9925.90

DISKSGOLDS EAR 5.25" ROPPY DESKS200 DS QD (BOX ICS 5.66GOLDSTAR 31/2' DISKETTESHE 20 D DSOD LBOX 10) 8.30UNBRANDED 3W DISKETTESDS DO 460X 10) 7.70MISTRAL) r NUS 29.54

Sharp Reel Drive Unit VID1200, 651,682.681.685.693. 783. 13.95HT500 Pocket Meter £9.2520 meter extension phone lead 13.25Brittsh Telecom Coupler E1.25HC90 high quality speaker cable

100m E25

STATIONERYSERVICE CALL PAD (100)REPAIR TICKET (1001JOB CARD (100)RENTAL PAYMENT CARD (50)MAINTENANCE AGREEMENTS (100)

1.993902 503.503 50

We have Video Tapes for the V2000 seers by Popular Request,VIC240VIC480

6.151.75

WE WELCOME ORDERS FROM SCHOOLS,COLLEGES AND GOVERNMENT NSTITUTIONS

ON OFFICIAL REQUISITION

SPECIALALTAIC90

AUDIOTAPES(BOX 10)1.99

ONLY

WE ARE THE MAIL ORDER SPECIALISTS AND WETRY HARD TO STOCK ALL THAT WE ADVERTISE.

IT IS NOT OUR POLICY TO PRINT LISTS INCATALOGUES Of GOODS THAT WE DO NOT HOLDIN STOCK.

PLEASE RING US SHOULD YOU HAVE ANYSPECIAL REQUIREMENTS OR IF YOU NEEDQUANTITY DISCOUNTS.

WE WILL ALWAYS TRY TO GIVE YOU PERSONALAND FRIENDLY SERVICE.

PHONE: (0254) 36521 390936 32611TELEVISION SEPTEMBER 1989 817

HOW TO INCREASE YOUR PROFITS, IMPROVE YOUR SERVICE, WITH COST EFFECTIVE TEST EQUIPMENT.

HAMEG OSCILLOSCOPESHAMEG are Europe s top selling DUAL TRACE OSCILLOSCOPES. Select from four superb models. All, withthe exception of the HM 1005, incorporates a useful COMPONENT TESTER. Size - all models - 285mm xt 45mm x 380mm. Clear display 8 x 10cm. Mains supply 110,125/220124DV AC 50/60Hz.

All supplied with 2 PROBES, a COMPREHENSIVE MANUAL and a 2 YEAR WARRANTY.

HM203-6 20MHz STANDARD

411111111MMinair'Price £314.00 + £47.10 V.A.T.

SPECWICATION* 2 Channels* Bandwidth: DC-20MHz* Sens: Chi., Ch2., 2mV/cm* Timebase: 0.25-20ris/cm* Triggering: DC-40MHz* Active TV -Sync -Separator* Variable hold -off* Trigger LED indicator* Calibrator: 1KHz Square wave* Component tester* Plus many features

FREE Securicor Delivery

SPECIFICATION 2 Channels Bandwidth: DC-60MHz Sens: Ch 1., Ch2., 1m1Wcm* Tmebase. 2.5s-5ns/cm Tnggenng. DC-80MHz* Active TV -Sync -Separator After delay trigger Sweep delay * Delay line Trigger LED indicator* Calibrator. 1KHz & 1MHz Sq. Wave* Component tester Plus many more superb features

Price £575.00 + £86.25 V.A.T.

HM604 60MHz UNIVERSAL

FREE Securicor Delivery

HM1005 100MHz UNIVERSAL

it ri

4

Ft. Is

3 CHANNELS -UP TO 6 TRACESSPECIFICATION 3 Channels* Bandwidth: DC-100MHz* Sens. Ch1., Ch2., Ch3., 1mVrcrn Timebase A 2.55-5nsrom Timebase 0.25-5nsrom Triggering DC-130AAHz After delay trigger Delay line Trigger LED indicator Overescan LED indicator* Active TV -Sync -Separator Calrbrator. 1KHz & 1MHz Sq Wave* Plus many more excellent features

Price £726.00 + £108.90 V.A.T. FREE Securicor Delivery

SPECIFICATION HM205-2 20MHz DIGITAL STORAGE Digital Storage. Analogue real time (Same as 203.61* Bandwidth' DC-20MHz Sens CFO., Ch2., 2mV,cm Tim ,base Analogue: 0.25-20nscm Timebase Digital: 5s-2µWcrn Tnggenng DC-40MHz Active TV -Sync -Separator Max sampling rate: 2x 5MHz Memory. 2 x 1024 x 8 Bit Dot loner Printerprotter output* Component tester* Plus many more useful features

Price £527.00 + £79.05 V.A.T. FREE Securicor Delivery

B & K PRECISION CRT ANALYSER -RESTORERThe number one CRT Test Instrument. Over 5000 U.K. Television engineerswouldn't be without it.

All CRT's checked identically including all in -line and one gun types ' Tests all three guns of colour CRT'ssimultaneously under actual operating conditions (model 467) ' Exclusive multiplex technique (model 467) Measures true dynamic beam current that actually passes through 01 aperture to screen Measures allshorts and leaks - preserving more CRT's Tests focus electrodes lead continuity finding faults that otherTesters miu Uses most powerful restoration method known with minimum danger to CRTRejuvenated CRT's guaranteed as new for two years Obsolescence proof: Perpetual set up chart up -datedand new adaptors development Tests and rejuvenates VDU's and Oscilloscope tubes A range of over 40CRT base adaptors available * Increases profit Pays for itself in months.PRICESModel 467 Tri-dynamic three meter instrument Inc. 6 common adaptors £395.00 + £59.25 V.A.T.Without adaptors £344.00 + 01.60 V.kT.Model 470 Single meter instrument Inc. 6 common adaptors 1294.00 + £44.10 V.A.T.Without adaptors £244.00 + £36.60 V.A.T.Technical leaflets available. GET INTO PROFIT NOW!

SADELTA FIELD STRENGTH METER TC-402THE SADELTA FIELD STRENGTH METER TC-402 has been designed to measure thesignal levels delivered by tne antenna to a TV or FM receiver, in order to test the performanceof the antenna and evaluate the best conditions during installation etc. To facilitatemeasurements, the tuning frequency readout is shown on a digital

FEATURES* Covering FM and all TV bands

(UHFNHF) including CATV freq.* Digital tuning display (3 digits)

for direct frequency readout.* Accurate 10 turn tuning

potentiometer.* Built-in loudspeaker enables

monitoring of sound in AM/FM.* Meter measurement in voltage

and dB from 20µV (26dB/AV).* Continuity tester 0-500 ohms.* Fully portable (battery).* Sturdy carry case.

Price £249.00 + £37.35 V.A.T.

B.K.'s CRT TESTER -REJUVENATOR

Tests and rejuvenates blue, green &red guns separately. Fitted with delta andP.I.L. sockets. Compact size 120 x65 x60mm. Supply 240V AC

Price £32.00 + £4.80 V.A.T.

SADELTA COLOUR PATTERN GENERATORSTHE SADELTA RANGE OF HAND HELD COLOUR PATTERN GENERATORSfor use in production. installation and service of both colour and rnonocnrome N sets, videoand computer monrIcvs. In order to control and adjust the various parameters eight swotchablepatterns are provided. The technipan has ready access to Laboratory. workshop and held useas the Generator has been designed using the latest micro -technology to achieve truly pocketsize instruments. internal re-char,ahln tsr,-Cd's SuDpilr-d win 9V POW,S,J1`1,,VSize 131mm z 81mmr 23rnrh

T.V. PATTERN GENERATOR PAL MC11B UK Band IV (21 -34) 0/Put 10mV into 75ohms Bard 15_ 12) Sound output PAL I.

Price £124.95 + £18.74 V.A.T.

PAL VIDEO COMPOSITE GENERATOR PAL B.G.I. Audio 0/Put 10mV 0/Put 1V p.p. (a 75ohms Switching 12V a, 4K7ohms

Price £124.95 + £18.74 V.A.T.

R.G.B. PATTERN GENERATOR 0/Put sigs. Pos.RGB

Neg. Composite 0/Put TTL 5V P -P Blank Pulse etc. CCIR

Price £111.95 + £16.79 VA.T.

B.K.'s REVOLUTIONARY DYNAMIC `LOPT' TESTERRevolutionary L.O.P.T. tester. OperatesIn dynamic mode which actually tests theL.O.P.T. under high voltage conditionswithout de -soldering or removal.Size 75x100 x40 mm. Supply 240V AC

Price £25.99 + £3.90 V.A.T.

0 ni

THANDAR SC110A PORTABLE OSCILLOSCOPE Full tog. fac. inc. TV frame etc Only 21/4" thick Battery or mains adaptor Fits in a bnef case Size 255mm x 148mm x 50mm Sens. 10mV ACCESSORIES Bandwidth 10MHz ca rryua-se £6.25 + £0.93 V.A.T.

Probe £7.50 + C1.30 V.A.T.Mans Adaptor 07.30 + C1.09 V.A.T.Price £195.00 + £29.25 V.A.T.

DIGITAL LCR METER

* LCD Display18 RangesInductance 1 pH - 2H

* Capacitance 1pf - 200µfResistance 1 ohm - 20Mohm

* High acuracy

Price £95.00 + £14.25 V.A.T.

INSULATION TESTER 500V Electronic battery

operated Measunng Voltage

500V DC Measunng Range

0-100Mohm Centre scale 2Moh m

Price £65.00 + £9.75 V.A.T.

U.K. POST PAID, export enquiries welcome. Visa/Access or cheque withorder, payable B.K. Electronics. Official Orders welcome from Govt. Depts..Colleges. P.L.C.'s etc. Large S.A.E. for technical leaflets of complete range.Delivery normally within seven days.

DIGITAL THERMOMETER* Pocket Size* -50°C to + 750°C 1°C Resolution* 0.5" LCD* Supplied with

thermocouple

Price £59.50 + £8.92 V.A.T.

200MHz DIG. FREQ. METER* Pocket Size* 8 Dig. LED

Display* Freq. Range

20Hz to 200MHzResolution 0.1Hz

* Sensitivity 10mVPrice £75.50 + £11.32 VA.T.

DIGITAL CAPACITANCE METER PRICE* High Accuracy * 8 Ranges £38.00* 0.1pf-2,000pf * Accuracy ±0.5% + £5.70 VAT* LCD display * Full scale ±1 digit Case Included

The THANDAR TP1 LOGIC PROBE and TP2 LOGICPULSER are effective and economical tools for checkingboth TTL and CMOS circuits. TP1 can show 14 differentcircuit conditions and can detect pulses down to typicallylOns. TP2 can inject a signal directly into a circuit without

Price £23.00 damaging sensitive components. Together they can+ £3.45 V.A.T. stimulate and monitor responses of components 'in

each circuit', greatly aiding faultfinding.

B. K. EL DEPT. TUNIT 5, COMET WAY, SOUTHEND-ON-SEA,

ES X. T T : a 4 - 7


West Midlands VideoWholesale

GREAT CLEARANCE SALEOVER 3000 TV's & VIDEO's IN STOCK AT UNBEATABLE PRICES - HURRY NOW.

HUGE STOCKS WORKING & GENUINE UNTESTED TV's & VIDEO's

WORKING CTV'sPHILIPS G11 £18KT3/K30 £30BUSH T20 £18GRUNDIG £35TOSHIBA £30TX9 £30TX TEXT £55STEREO TEXT £75

LOTS OF SPECIAL OFFERS WHILST STOCKS LAST

WORKING

SETS FROM

El 0SPARES AVAILABLE FOR

MOST TV's & Video's(CALLERS WELCOME)

TEST YOUR OWN SETS

NEW INFRA RED HAND SETS FROM £10

VHS VIDEO HEADS FROM £15

BLOCKS OF 10 SETS FROM £40

* DELIVERY CAN BE ARRANGED *ALL PRICES SUBJECT TO V.A.T. AND QUANTITY

WORKING VIDEO'sFERGUSON 3V29/3V30 £65JVC 7200 £75PANASONIC £75SHARP £80AMSTRAD 7000 £703V3113V35 £90HITACHI VT11 £75

TRADE MINUTES FROM JUNCT. 9-MSHOWROOM WAREHOUSE IN PASSAGELARGE QUANTITY

OF READYOFF LITTLE LONDON

TO SELLVIDEO's & TVs CALDMORE, WALSALL

Call in - you TEL. 0922 724542322208will be delighted MOBILE 0860 749202

Open Mon -Sat 9am - 6pm Sunday by appointment

LONDONS NEW EX -RENTAL WAREHOUSE

RELIABLE WHOLESALE TV

SALE TIME!TV's from £3 VIDEOS from £30WE STOCK THE LOT -10p WILL SAVE UsTO NAME A FEW

TV's

PHILIPS G8 - G11 - KT3 - KT30 - KT35 CTXDORIC MK2 - MK3 - MK4 - MK5FERGUSON TX9 - TX10 - 9600 - 8800Plus Pye, Sony, Finlandia, GEC, Hitachi, National Panasonic,Mitsubishi, Toshiba, Grundig, ITT & MORE, MORE, MORE

VIDEOS

3V22 - 5000 - 8000 - 3V29/35136/37/38139/45SHARP 9500 - 9600 - 9700 + MORE, MORE, MOREPANASONIC NV333/366/370/2000/7200/3000

VAT Prices exclude VAT.HANDSETS - Handsets are included with working sets but arecharged extra in 'off the pile' sales.

WE ARE JUST OFF A406 (BARKING)2 ROADS AWAY FROM EAST HAM TUBERELIABLE WHOLESALE TV 01-471 9622UNIT 22A LATHOM ROAD 01-590 2715

TV 8,

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17 GCSE/GCE/SCE TV, Video & Hi-fi

I I Electronics

Servicing

I Radio Amateur Licence I

Basic Electronic Exam (City & Guilds)I Engineering Car Mechanics I

I (City & Guilds) Computer Programming I

I Electrical Contracting/ Motorcycle Repair IInstallation

SEE

PAGE

ORACLE

671

:: I

ICourse of Interest

IName

I

I IAddress

I IP.Code

I IDept. EGS99

I 312/314 High Street, Sutton, Surrey SM1 1PR.CS International Correspondence Schools,I

Tel 01-643 9568 or 041-221 2926 (both 24 hrs) -.I


WE WILL ONLY SUPPLY TOPQUALITY, BRANDED COMPONENTS.

REPUTATION COUNTS WITH US

CAPACITORS INTEGRATED1UF at 250V 20

4.7UF at 250V 25

10UF at 250V 3522UF at 250V 40

33UF at 250V 5547UF at 250V 65100UF at 250V 125(All Single Ended PCB Type)

DIODESTYPE PRICEBY127 10

BY133 20BYI79 65BY223 125BY227 20BY229/800 95BY299 3BYX55/6001N4007 07I N5408 20SKE5F3/10 1.50

ZENER DIODESBZX61C 11.3 Watt) 3V3, 4W,5V1, 51/6, 6VZ 6V8, 7V5, 8W.9V1, 10V, 11V, 12V, 13V, 15V,1W, 20V, 24V, 2T/, 30V, 33V,36V, 47V, 56V, 62V, 75V,100V, 110V, 120V, 130V. Pictsof 5 per value 1.00

E.H.T. TRAYSContinental 20AX Focus 895Continental 30AX Focus 8.95DECCA 80 720DECCA 100 7.35DECCA 120/130 7.95ITT CVC20/25/30/32 6.95ITT CVC45 7.50PHILIPS G8 550 7.90PHILIPS KT3 7.95RBM T20/22A 735THORN 9000 8.00UNIVERSAL 5.70

CIRCUITSTYPE PRICE If)AN303 175AN305 350AN318 635AN5620 4.95AN7145M 2.%HA1339A 295HA1366W 1.85HA1366WR 1.85HA1374 2.45HA1377 295HA1392 295HA1397 3.95HAI3001 4.50HA13008 1235LA1201 125LA1230 2.95LA1365 2.45LA4440 275LA4445 245LA4460 245LA4461 245LA7800 135LA7801 zaaM293B I 625MC13002 395MC14497P 4.50SAAI250 3.85SAA1251 435SAA3027 335SAA5000A 3.95SAA5010 455SAA5012 4.95SAA5030 5.95SAA5050 695SAFI CO9P 2.75SL470/1DP 235SL480 2.95SL490 2.90

1.951351.75

656.95695

11.955955.955956.957508559.95995

1135635

FUSES20mm NS: (Pkts of 10)250MA, 315MA, 400MA,500MA, 630MA, 800MA,1A, I.259, 1.69. 2A, 2.59.3.15A, 4A1A, 6.3A8A 12020mm 0/B: Olds of 10)500MA, 630MA, =Mk 1A,2A, 2.5A, 3.15A 60

SL1430SL1431SL1432SN76660NSTA471CSTK077STX2129STK433STK4332STK435STK437STK439STK459STK461STK463STK465STK5332

G.G.L.COMPONENTSPO BOX 72, UNIT 7, SOUTH JOHN STREET, CARLISLE, CUMBRIA CA2 5ALPHONE (0228) 39693/20358 FAX (0228) 515127

FERGUSON TV SPARESTXS/10

Focus Unit TX10 8.50

Line 0/P Trans TX9 2330Line 0/P Trans TXIO 29.95

On/Off Switch (Remote) 195Push Button TX9 16.95

Push Button TX10 16.95

RFI Choke TX9 2.95

Tuner 1435

T890/100Line 0/P Trans 7X9014" 1975.

Line 0/P Trans TX90 20" 19.75

Line 0/P Trans 1X10090° 1995Line 0/P Trans 1X100110" 2095Mains Trans. (TX90) 1795On/Off Switch (Remote) 1.75

Push Button TX93 1295Tuner 1435

FERGUSONVIDEO SPARES

3V00/16/22Capstan Motor 2425Drum Motor 2435Pinch Roller 335Take -Up Clutch (Small) 5.65

Take -Up Clutch (Large) 535Video Head 1635

312930Capstan Motor 3735Loading Motor 8.70Pinch Roller 430Pilot Lamp ao

Reel Idler 225Take -Up Clutch 2.45

Take -Up Idler 1.40

Video Head 1695

3131136

Capstan Motor 22.95Cassette Housing 335Mains Trans 7195Reel Idler 2.95

Take -Up Clutch 2.45

Take Up Idler 1.40

Video Head 16.95

31144/45

Capstan Motor 3735Cassette Housing 2835Loading Motor 8.95

Take -Up Clutch 1.95

Video Head 2695

TYPE PRICE If) TYPE PRICE (E) LINE 0/P TRANSSTK5421STK5481STK7308

4958951195

TDA2530TDA2532TDA2540

2.002.101.70

DECCA 100 820FERGUSON 1690/1 935

STR4090STR40090STR50103ASTR4211

8.957956.50335

TDA2541TDA2560TDA2576ATDA2577TDA2578A

2.70

825235235

FERGUSON 1790/1

FERGUSON TX9

FERGUSON 1x90114")

FERGUSON TX.93 (29')

73523.50

193519.75

STR441 435 TDA2579 3.75 FERGUSON 1X10090 3.95STR45ISTR454STR5412

5.35435635

TDA2581TDA2582TDA2591/3

2.00135135

FERGUSON TX100 110

FIDELITY Z/(2000

20.95

14"/20"

STR58041 6.95 TDA2594 235 (Inc Mod.) 12.50

STR6020(KIT) 5.75 TDA2595 435 FIDELITY 3(3000 14"/TA7193PTA7205APTA7222PTA7727TA7270TA7609

4.501.401.85

2953.25335

TDA2600TDA2611ATDA2653ATDA2655BTDA3190TDA3330TDA3540

635ISO150535135195236

20"

FIDELITY ZX V726"

HINARI C74/5

ITT CVC20

ITT CVC25/30/32

115022952195

8.50

8.50

TBA120AS 1.00 TDA3541 235 ITT Compact 130 2195TBA120U 120 TDA3560 435 PHILIPS G8 9.95TBA800PTBA810STBA820

as1.251.50

TDA3561ATDA3562ATDA3565

4355.50435

PHILIPS G11

PHILIPS KT3..

18951235

TBA820M 125 TDA3571 Bra 195 PHILIPS K30 1935

TBA920STBA950/2XTBA1440GTDA440

1352252.95295

TDA3650TDA3651TDA3651AQTDA3652TDA3653AQ

4.751353.80295435

PHILIPS CTX 14"/16"

PHILIPS CTX 20'

RBM 720/22A

SHARP C1410

1795

1795935

2395TDA1020 2.75 TDA3654AQ 4.75

ON/OFF SWITCHESDacca 80/100 190

TDA10357TDA1037TDA1044

2.40135295

TDA4500TDA4503TDA4600/2

3354.652.16

TDA1151 1.3 TDA4600/20 330 Ferguson D(9/10 )Rem) .1.75TDA1170S LBO TDA7270 335 Ferguson 1X90 (Rem) 1.75TDA1180PTDA1190ZTDA1470TDAI506TDAI510TDAI512

2.652.153254353203.50

TDA8180TDA8190TDA9503TDA9513TEA1014UPC1031HUPCI181H

9952102353351952601.70

fidelity AVS Seriesfidelity CTV140

fidelity CTV131Fidelity CTV14S

Grundig CUC731

150ISO2.95

2953.50

TDA1515 4.50 UPC1182H 1.70 Hitachi CPT2650 135TDAI670A 420 UPC1185H 250 Philips G8 135TDA1770ATDA1870TDA1908A

3.70E951.95

UPC1230HUPC1365CUPC1378H

4.354203.70

Philips GllPhilips Gll (Rem)

131.75

TDA1950A 3.95 UPC1382 495 Philips KT3 1.50

TDA2007TDA2003

1.501.55

UPCI394CZ8OACPU

2351.75

Philips KT/CTX (Rem)

Pye GI 1 (Rem)

1.75

1.75TDA2004 2.90 RBM 720/22A 3K3 Vol 2.45TDA2005 255 Sony KVI612 (Rem) 3.95TDA2020TDA2030TDA2170

3.201.80295

I C SOCKETS18 Pin Dil-Dil24 Pin Dil-Dil

1825

Sony KV20221Rem)

Tatung 160/161

3.95

1.75

TDA2270 235 28 Pin Dil-Dil 30 Tatung 165 1.75

TDA2525 215 40 Pin Dil-Dil ao Thorn Universal 120

GEC/HITACHI SPARESHM3232 595HM6251 4.70HM9032 535

VIDEO SPARESvancvvramCapstan Motor 31.95FF/Rew Idler 2.65FF/Rew Pulley 85

Pinch Roller 3.95Play Idler 4.50

Video Head 39514001/17930119500Capstan Motor 3135FF/Rew Idler 1.95FF/Rew Pulley 85

Pinch Roller 3.95

Play Idler 325Video Head 2295

1410ONT11ENT33ECapstan Motor (VT11E) 23.95Capstan Motor (VT33E) 2935Clutch Assy 7.95

FF/Rew Idler (Genuine) 250Pinch Roller 3.95Video Head 22.95

1/41105NT63E

Capstan Motor 1595End Sensors (Pair) 195Pinch Roller 4.95

Video Head 4935

PANASONIC VIDEOSPARES

NV333/366Complete MaintenanceKit (Genuine) 13.75

Cassette LED 1.95

Pinch Roller 3.95

Play Idler (Genuine) 4.95

Reel Idler (Genuine) ....... 125Reel Motor (Genuine) 14.95

Video Head 17.95

NV370310Complete MaintenanceKit (Genuine) 1295Pinch Roller 3.95

Reel Idler (Genuine) 2.95

Video Head 2115NY738/770

Complete MaintenanceKit (Genuine) 12.95

NV20002010Complete MaintenanceKit (Genuine) 21.50

Cassette Lamp 70

Pinch Roller 3.95

Play Idler (Genuine) 1.3Reel Idler (Genuine) 1.3Video Head 1735

NY700/1/200Complete MaintenanceKit (Genuine) 17.50

Cassette Lamp 70

Pinch Roller 3.95Play Clutch (Genuine) 4.95

Reel Idler (Genuine) 1.3Video Head 1735

TYPEBC107

BC147

BC148

BC307

BC327BC328BC337BC338BC360BC546BC54713C548

BC557BC558BC639BC64080131B013280222BD22580237BD238BD278A80437BD438BD677EID701

BD707BD807BF337BF3388E42213E423

8E4588E4608E470BF7578F871BR103

BT1514300

BU126BU205BU208ABU208DBU326ABU407BU4070 ...... ........... .BU426ABU500BURSABU50806U526ABU536BU705

BUY WITH

BU8TRANSISTORSmucE 1TTYPEE PRICE

1

If)30

15BU826A _.._.._......._...........225

10 SUU9089°7

2.951.95

10 BUT11AF 2.9512

BUX848UW81A

3.9511au12

11

12

351010

10 1 9510 TIP29E 79

10

25

50

SG613. 8.95SG264A... ...........

15/80H 29550

15/858 2.9550 2SC1367A 32040 2SC1034 .3.95no 22 sSE43A1114..........

29540 260942 2906540 225S0C3725156

4.95...

150

95 6.50

95 2.35

952501453 2.957935 50

n 7812 5030

7815 70

3535

7824 70

50

35

55 TUNERS50 ELC 1043/05 13.50

10 ELC1043106 9.95

00 ET548. 142075

1351.15

1501.401.451351.451251381251351.751352.50275335

U322 180

U343Icoax skt) 14.95U343 1phonol 16.95

U411 1135

TV ELECTROLYTICSOECCA 801400/8001 4.50FIDELITY 2X1220/385)..........3.95PHILIPS G8160E1/3001 335PHILIPS G11(470/2501.........230RBM T20A(220/400) .............250THORN 16514700/25) 135THORN 90001400/400) 290

SANYO/FISHER SHARP VIDEO SPARESVIDEO SPARES

VTC5000/5300

Loading Roller 125Pinch Roller 8.50

Reel Idler (Genuine) 5.70Reel Motor (Genuine) 7.95

Video Head 35.00

FIMP615Gear Idler Assembly 5.95

Pinch Roller 450Reel Idler 535Video Head 2435

REMOTE CONTROLSFerguson 1(9 U/S Basic 14.50

Ferguson 1X9/10 N/Text 173Ferguson TX9/10 Text 12.95

Ferguson TX Stereo Text 1295Ferguson TX100 Text 15.95

Ferguson 3V23 Video 14.95

Ferguson 3V31 Video 16.95

Ferguson 3V35 Video 16.95Fidelity CIV14FI/S 12.95

Grundig TP200 1295Grundig TP400TT 1295ITT FS9/FS10 Text 1595ITT RG301/305 Text 14.50

ITT RG306 Text 1450Panasonic NV7200 Video 1595Philips G11 U/S Full Rem 15.95

Philips G11 U/S Text 1535Philips Gil I/R Full Rem 12.95Philips G11 UR Text 1295Philips KT3/30 N/Text 1235Philips KT3/30 Text 12.95Philips RC5 (Genuine) 12.50

Philips AV5600 Video 15.95

Reddusion Mk.4 Text 13.95

Sony RM604/605/606 1450Sony RM613/615 14.50

Sony RM630/632/635 1430Tatung RTP40/43/45 1595

REPAIR KITSPhilips KT3/30 N/Text 6.50

Philips KT3/30 Text 6.50

SERVICE MANUALSAll Genuine)

Ferguson TX9 Complete 2735Ferguson 1X10 Complete 38AFerguson D(85 935Ferguson 1X90 14 95

Ferguson 1X100 18.95

Ferguson 1790/1 1.95

Fidelity AVS1600 5.95

Fidelity AVS2000 5.95

fidelity CTV1413 5.95

Fidelity CTV2OR 5.95

Fidelity C1V2OT 5.95

Philips CFI 6.95

Philips CTX-E 2.50

Philips CMS 2.50Philips KT3 4.50

Philips 1(35 3.50

Philips KT4/40 5.95

Philips 2A 6.95

Philips 28 6.95

VIDEO RECORDERSFerguson 3V35/36 2895Ferguson 3V44/45 11.95

Ferguson 3V46/47/52 11.95

Ferguson 3V54/55 1125Ferguson 3V59 11.95

Ferguson 3V65 11.3Ferguson FV1I 9.95

Ferguson FV12 9.95

Philips VR6460 6.50

Philips VR6462 6.50

Philips VR6467 6.50

Philips VR6520 6.50

Philips VR6542 6.50

Philips VR6560 6.50

Philips VR6660 6.50

Philips VR6760 835

VC11300

Cassette Lamp 70Channel Bank 796Pinch Roller 335Rewind Idler 350

VC9300/3111

Capstan Motor 2935Cassette Lamp 1.95Pinch Roller 335Reel Idler (Genuine) 335Reel Motor (Genuine) 17.50Unlock Assembly 35Video Head 23.95

11C4111

Capstan Motor 2235Reel Idler (Genuine) 3.95Reel Motor (Genuine) 1850Video Head 23.95

SONY SPARES

Capstan Motor C7 2795Pinch Roller C5/6/7 335Rewind Kit C517 4.65Rewind Kit C6 3.45Video Head C5/6/1 19.50

VIDEO BELT KITSAkai VS1/2/3/5 135Amstrad VCR4500 135Amstrad VCR7000 150Ferguson 3V00/16/22 2.50Ferguson 3V23 1.75Ferguson 3V29/30 110Ferguson 3V35/39 195Ferguson 3V44/45 135Fisher FVH520/615 195Hitachi 8000 1.95Hitachi 9303 135Hitachi VT1 IE 1.95Panasonic NV333 195Panasonic NV370 195Panasonic NV733 135Panasonic NW77 195Panasonic NV2000/2010 195Panasonic NV7000/730 135Sanyo VTC5000 1.00Sanyo VTC5300 135Sharp VC7300 2.50Sharp VC8300 2.45Sharp VC9300 245Sony C5/7 2.50Sony C6 135

VIDEO PILOT LAMPSFerguson 3V23 (Plug) 80Ferguson 3V29 (Plug) 80

Panasonic NV2003/7200 70Sharp VC8300 70

Sharp VC9300 1.95Universal 50

VIDEO HEADSAlba 4000 24.95Amstrad VCR4500 395Amstrad VCR4600 2350Amstrad VCR7000 24.95Amstrad VCR9000 243Ferguson 3V00/22/29/39 1635Ferguson 3V32 4750Ferguson 3V42/44/45/55 3.95Fisher FVH520/615/720 24.95HinariVXL2/4 24.95Hitachi 8000/9300/9500 3.95Hitachi VT11/33E 2295Mitstlbishi 303/310 2795Panasonic NV230 73.95Panasonic NV333 16.95Panasonic NV366 343Panasonic NV370/380 2195Panasonic NV430 243Panasonic NV688 4435Panasonic NV730 34.95Panasonic NV777 3.95Panasonic NV2000/7000 16.95Panasonic NVG7/9 24.95Panasonic NVG10/11/15 29.95Panasonic NVG18 44.95Panasonic NVG20/21/25 3935Philips VCR6460/6520 21.95Philips VCR6462/6560 37.50Samsung VX510/616 27.95Sanyo VHR11013/1300 29.95Sanyo VHR1500 42.95Sanyo VTC5000/5500 35.80Sequa 8000 24.95Sharp VC9300/381/481 23.95Sharp VC58I/583/682 27.50Solavox 103 2495Sony C5/6/7.... 19.50Sony C20/30 2295Toshiba V9600/V31B 24.95Toshiba V55/57 16.95

ORDERINGPlease add 75p for pip U.K.Add 15% VAT to this total.

Service Manuals E1.00 p/p each.Export Orders p/pcharged at cost

Delivery by return on stock items.


PHOENIX OF DONCASTER

THIS MONTH'SSPECIAL OFFERGEC PIL STARLINES - ELECTRONIC TUNE

GOOD CABINETS - OFF THE PILE £6

K-30 £25KT -3 £20TX £25

ALWAYS IN STOCK

ELECTRONIC VHS VID -COMPLETE NON -WORKING FROM £25

PHOENIX TV WHOLESALEUNIT 3A SANDALL LANE, KIRK SANDALL IND EST

Telephone CHERYL on 0302 890117

BITELSOUTH WALES

NEW DELIVERIES EVERY WEEK

COLOUR TVDELTA £8 WORKINGPIL FROM £12 WORKINGR/C FROM £28 WORKINGTEXT FROM £40 WORKINGPORTABLE FROM £50 WORKING

VIDEOELECTRONIC VHS FROM £70 WORKING

JVC HEADS £15RANGE OF NEW HANDSETS

ALL PRICES INCLUSIVE OF VAT

UNITS 11 & 12, TAVERNER ESTATE,CAERLEON, NEWPORT, GWENT

(3 miles from M4, Junction 25)

Ring Bob on0633 430040

FIRST IN TUBE REBUILDING TECHNOLOGY

30AX; 540 SERIES!REDUCED SERVICING COST,

FIT A DIRECT REPLACEMENTAVAILABLE ONLY FROM CHROMAVAC.

PRE CONVERGED AS ORIGINAL.EXTERNAL MULTIPOLE UNIT NOT REQUIRED.

QUALITYREBUILDS

rm.% Get on the hot-line toda

SAVE ECEsKEEP THAT OLDER SET

PURCHASE A NEW 56-410OR 47-342/3 TUBE

FOR ONLY £5 + CARRIAGEAlso NEW 560 AKB22 £35

NEW 670 XB22 f37.50

061

681 2959most types of

Inline Re -buildsor new ex -stock

PRICES SUBJECT TOGLASS EXCHANGE

Delta RebuildsUpto 19" £2EUp to 22" £3CUp to 26" £34110rupto 22" £34110°upto26" £3ELow focus +f2A47 342 New £2817F1-IP New £3C470EHB New £3CDelta only. Less 5% 5+

Inline RebuildsUp to 22" From £40Up to 26" From f45A56 540x £56A66 - 540x £58Bonded Coil . _... +£5

ALL SIZES OF NEW ANDREBUILT MONO TUBESAT COMPETITIVE PRICES

IN LINE TYPES (NOT REBUILDS PHONE RE STOCK POS.

Please endure types not listed370 HFB-A37-590 £503701- UB £50AXT 37-001 £50420 CSB £50420 EDB-A42-590 £50420 EZB £50420 ERB £50470 KU B £50510 UFB £67510 VSB £67AXTE1-001 £67560 DYB-560 DTB £67560 EGB £67560 CGB £67560 DM B £67

NOTESurcharge

withoutexch. glass.

AXT 56-001 £67670 CZB £80A66-540 £125420FSB £6014" (A34); 16" (A38); 21"(A51); FST now available

at special low prices

MIN. CARRIAGE £5£10 if glass collected.

TERMSCash with order

ALL PRICESEXCLUSIVE OF VAT

* WE PURCHASE SURPLUS STOCKSOF INLINE TUBES: ALSO A56/66 - 510/540 ETC. OLD GLASS.

DELIVERY: By return on all stock items.

THE COMPANY WHO PUT HIGH STANDARDS FIRST

icHromo 'acCHROMAVAC LTD., PUMP STREET, mrarmHOLLINWOOD, OLDHAM OL9 7LR VISA

ihk Ask for Mr Butterworth ON: 061-681 2959


METEX & TEST LAB INSTRUMENTS

YOU PAYTRADE PRICES!

31/2 AND 41/2 DIGIT DmmsALL WITH CONTINUITY TEST I* With Capacitance + With Hie 0 With Freq.)

PRO SERIES METEX& 41/2 DIGIT

All With Case. 20A AC/DC17mm Display moo 12mml

STANDARD SERIES3lk DIGIT 12 mm DISPLAYS23158 17 Range 10 ADC23188 23 Range 10ADC1+1

£19.43£22.78

3800 32 Range 0.5% (13610 30 Range 0.3% (.)3630 30 Range 0.3% (..)

£20.40£38.88£46.90

2335 31 Range 10A AC/DC (.)2325 32 Range 10A AC/DC (")2355 32 Range 10A AC/DC (...)

£26.80£29.40£33.50

3650 30 Range 0.3% (..o)38508 as 3650 with Bargraph

£50.90£57.60

236538 Range 10A AC/DC (+*.)Plus Logic Probe

£36.00

463011 41/2 Digit 33 Range DataHold 0D5% (..)

£69.68 Also Metex M80 21mm Display4650 as 4630 Plus Range Freq £72.36 334 Digit Autorange. Datahold M £59.92

111

TEST INSTRUMENTS3000 LCR AC BridgeM3002A AC Millivolt Meter 1MHZ2020 500 KHZ Function Generator4162.00150 MHZ Fr Gen. Plus 6 DigitCounter2603A01 MHZ Af Gen. plus 6 DigitCounter7E200 150 MHZ Rf Gen.(350 MHZ Harmonic)

£93.80 1E2201 MHZ Audio Generator£80.40 3300 Autorange Digital Cap. Meter£85.76 6100 Signal Tracer/Injector

5250 150 MHZ 7 Digit Frequency£154.00 Counter

OST5M 5 MHZ Bench Scope£159.00 243 0/24V 0/3A Variable PSU

245 0/24V 0/5A Variable PSU£80.00 154 4/15V 0/4A Variable PSU

£87.00£64.00£52.30

£64.50£144.00£50.65£63.65£36.05

"POCKET" TEST INSTRUMENTSF20 Dual Scale Sound Level Meter12086 £33.87225V VHS Video Head Tester £30.391065 Digital Lux Meter -3 Ranges £47.7807 Logic Probe £8.10M625 Logic Probe/Pulser £14.74300/310 AC Clamp Meter 600A/300V/Resin £32.83M265 Add on AC Clamp Probefor Dmm's £16.48501 Electronic Insulation Tester 500V £53.00504 Electronic Insulation Tester 1000V£65.00kOM6 TR Dip Meter 1.5 to 250 MHZ £45.021062 LCD Temperature 8 data hold £35.50

II

302K LCD Temperature Two 1/P £34.74390070 LCD Dmm With Dwell AndTach Ranges £49.58K150 LCD 8 Range Capacitance Meter £33.50au LCD Digital True Power Meter6KW 19 £64.002070 19 Range Multimeter 1OADC ..Buzz £11.352030ET 27 Range 10A AC/DC Cap.Hfe Temp. Buzz £35.305050E 41 Range FET mm £25.330M5 Wallet Autorange Dmm £17.95YF120 Pen Type Autorange Dmm £29.21

/ AUDIO -ELECTRONICS ARE

INSTRUMENT DISTRIBUTORS FORHAMEG FLIGHT BLACKSTAR ALTAI THURLBY THANDAR CROTECH LEADER AND HITACHIPHONE FOR BEST PRICES.

TELEPHONE YOUR ORDER WITH VISA/ACCESSOPEN 6 DAYS A WEEK FOR CALLERS

AUDIOELECTROnICS301 Edgware Road. London W2 1BNTel 01-724 3564 Fax: 01-724 0322Sales office 01-258 1831

TRADE/EDUCATION ORDER ACCEPTED.

EDUCATION AND QUANTITY PRICES AVAILABLE

ADD 15% VAT(UK ONLY)

INSTRUmENTCATALOGUE

WITHDISCOUNTVOUCHERS

REF TGSend A4

SAEgelonallor

- KCAUUE

KITVISION************** * * * * * ******* * * * * * *

UNBEATABLE NEW WAREHOUSEOPENING OFFERS*******************

TVs WORKING VIDEOs WORKING8800 £ 9.00 3V29/30 £65.00TX 9 BASIC £25.00 3V23 £70.00TX 10 TXT £60.00 3V31 £85.00PHILIPS ITT SHARP PANASONICGRUNDIG DECCA HITACHI AMSTRAD

PORTABLESONLY £50.00**** ******

GRADE '13'Midis £ 49.00R/C 14"TV £135.00VHS E180 £ 1.40MICROS £100.00

Next toFORD

CENTRALMOTORS

Pay Us a VisitYou Won't beDisappointed

WeGuarantee!!

KITVISIONUNIT 1, ST MARKS WORKSFOUNDRY LANE,LEICESTER LE1 3WUTel: 516941

IBEXGLASGOW

INDEPENDENT TV and VIDEOWHOLESALERS

GOOD SELECTION OF WORKING ANDNON WORKING SETSALWAYS AVAILABLE

EXAMPLESWorking Non Working Text from £35

Working VHS Videos from £75G11 £18 £12 Beta VideosGEC STAR £20 £12 £8 off the pileFinlandia £15 £10

All Our Prices areRediffusionMk3 £15 £10 Inclusive of VAT. TheTX9 & 10 £35 £20 Price You See is TheKT3 & 30 £35 £20 Price You Pay.

UNIT D/BPROJECT 9 INDUSTRIAL ESTATE

McPHAIL STREET, GLASGOW G40 1NDTelephone: 041-554 7637


802

BD7

809

8D11

BD13

B0228029BD30

BD32

8D42

8045

BD49

8056

BD59

8067

BD103A

BD120

BD128

BD132

80134

80139

BD148

BD149

80180

80193

130196

80199

80201

BD211

80221

60242

BD252

60259

80263

80268

80283

6029380305BD667

80400

80653

BD553a

No. 1 UST BAKERS DOZEN PACKSAll packs are £1 each, if you order 12 then you areentitled to another free. Please state which one youwant. Note the figure on the extreme lett is the packref number and the next figures is the quantity ofitems in the pack, finally a short description.

5 13J1 spurs provide a fused outlet to a ring mainwhere device such as a clock must not be switchedoff

4 in flex switches with neon ordoff lights, savesleaving things switched on

2 6v. 1A mains transformers upright mounting withfixing clamps

1 61/2" speaker cabinet ideal for extensions, takesyour speaker. Ref BD137 + 50p.

12 30 watt reed switches, it's surprising What you canmake with these - burglar alarms, secret swit-ches. relay etc. etc.

2 25 watt loud speaker two and cross-overs1 8.0.A.C. stereo unit is wonderful breakdown value2 nicad constant current chargers adapt to charge

almost any nicad battery2 humidity switches, as the air becomes damper the

membrane stretches and ceprates a microswitch5 13A rocker switch three tag so ordoff, , or change

over with centre off1 24hr time switch, ex-Electncity Board, automati-

cally adjust for lengthening and shortening day5 neon valves, with senes resistors, these make

good night lights1 mini uniselector, one use is for an electric jigsaw

puzzet we give circuit diagram for this. One pulseinto motor, moves switch through one pole

2 flat solenoids - you could make your mufti -testerread AC amps with this

1 suck or blow operated pressure switch, or it canbe operated by any low pressure variations suchas water level in water tanks

1 6v 750MA power supply. nicety cased with inputand output leads

2 stripper boards each contains a 400v 2A bridgerectifier and 14 other diodes and rectifiers as wellas dozens of condensers etc

10 very fine drills for p.c.b. boards etc. Normal costabout 80p each

2 plastic boxes approx. 3" cube with square holethrough top so ideal for interrupted beam switch

10 motors for model aeroplanes, spin to start soneeds no switch

6 microphone inserts - magnetic 490 ohm also actas speakers

4 reed relay kits you get 16 reed switches and 4 coilsets with notes on making do relays and othergadgets

6 safety cover for 130i msockets - prevent thoseinquisitive little fingers getting nasty shocks

6 neon indicators in panel mounting holders withlens

6 5 amp 3 pin flush mounting sockets makes a lowcost disco panel - need cable clips

1 in flex simmerstat - keeps your soldering iron etcalways at the ready

1 mains solenoid very powerful has 1" pull or couldpush it modified

8 keyboard switches - made for computers but havemany other applications

1 elednc clock mains operated put this in a box andyou need never be late

5 12v alarms make a noise about as loud as a carhorn. Slightly soild but OK

2 6" x 4" speakers 4 ohm made from Rathomobileso very good goody

1 panostat, controls output of boiling ring fromsimmer to boil

50 leads with push on 1/4" tags - a must for hook ups- mains connections etc

2 oblong push switches for bell or chimes, these anmains up to 5 amps so could be toot switch it fittedinto pattress

1 mini 1 watt amp for record player. Will also changespeed of record player motor

3 MN steel boxes approximately 3- 1" deep- standard elecIncal

50 mixed silicon diodes1 tubular dynamic mic with optional table rest2 4 .7uf , non -polarised block capacitors, pcb

mounting4 Books. flied for beginners Describes amplifiers,

test equipment and kit sets2 Miniature driver transformers. Ref L144. 20k to

1k, centre tapped2 3.5 volt operated relays, each with two pairs CO

contacts

Most other packs still available and you can choose any as your tree one.

CAMERAS. Three cameras, all by famous makers. Kodak, etc. One disc, one35mm and one instamatic. All in first class condition. believed to be in perfectworking order, but sold as untested You can have the three for £10 including VAT,which must be a bargain - it only for the lenses. Cash gear, etc Our ref 10P58

675 VOLT MARIS TRANSFORMER. PCB mounting. 20va A very will made(Bnbsth transformer Ideal for laser power supply, etc Price £4. Our ref 4P38.

PRETTY CASSETTE PLAYER. In handy carrying pouch with silk type shouldercord. Ideal present for a young girl. New. tested and in perfect order. Just needsheadphones and batteries Price £4. Our ref 4P35

EXTRA SPECIAL CROC CLIPS. Medium size. est right for most hook-upsNormally sell for around 10p to 15p each. These am insulated and have a length ofwire connected to them but this is very easy to snip off if you do not need rt. 20 for£1. Our ref 1301170.IONISER FOR YOUR CAR Experts say that positive tons predominate in a carand can cause you to feel sleepy so we now offer a car ioniser to counteract this. Itplugs into the cigarette lighter socket. Price £12 for the complete kit OUt ref 12P8.Our famous transformer operated mom ioniser is still available at £12 50 We claimthis to have ten times more output than the ETI. the Equaliser and in fact most otherpopular kits and ready bah ionisers.COPPER CUD PANEL for making PCB. Size sperm 12in long x 81/2in wideDouble -sided on fibreglass middle which is quite thick (about 116m) so this wouldsupport quite heavy components and could even form a chassis to hoW a mainstransformer, etc Pnce £1 each Our ref 6D683

POWERFUL IONISERGenerates approx. 10 times more IONS than the ETI and similarcircuits. Will refresh your home, office, shop workroom etc.Makes you feel better and work harder - a complete mainsoperated kit case included £12.50 + £2 PAP. Our ref 12P5r1.

MODERN TELEPHONES. Two-piece push-button desk or wallmounting telephone. Fitted with standard BT flat plug for immediate use.Standard model £8 Our ref 8P31. Our ref 1 OP68 If not collecting add £2

for special packing

ELECTRONIC SPACESHIP.Sound and Impact ccntrolled respondsto daps and shouts and reverses whenn hits anything Kit with really detailedinstructans Ideal present for buddingyoung electrician. A youngster shouldbe able to assemble but you may haveto help with the soldering of the compo-

nents on the pcb Complete kit £8 Our ref 8P30

DATA RECORDER FOR COMPUTERS. For playing games orlistening to music cassettes. n has a buitt-in condense- microphone andloud speaker (muted if you use the extension socket. Has the followingcontrols: pause. stopeject last forward, rewind, play and record. Also hasbuilt-in tape counter extension headphone and microphone socket andvolume control. Bull -in power supply enables it to run Mom the mains butprovision also for battery operation. In 'as new' condition. but customerrealms so may have fault. Price only £10 and it you order 4 you get a fifthone free. Our ref 10065

BUSH RADIO MIDI SPEAKERS. Stereo pair. BASS reflex system,using a hill range 4in driver of 4ohms impedance. Mounted in very nicelymade black fronted walnut finish cabinets. Cabinet size woe 812in aide.14in high and 31/2in deep. Fitted with a good length of speaker flex andterminating with a normal audio plug. Price £5 hie pair plus f 1 post Our ref5P141.

31/2In FLOPPY DISC DRIVE - DOUBLE SIDED, DOUBLEDENSITY, 80 TRACK. Shugart compatible, has 34 way IDCconnector and win interface with almost any computer. Made by thefamous Japanese NEC Company. Price £59.50 plus f3 insured post.

ATARI 65XE COMPUTERAl 64K this is most powerful arid suit-able for halve and business. Brandnew. complete with PSCl. N lead. own-er's manual and six games Can beyours for only £45 plus £3 Insureddelivery.

65XE COMPENDIUM. Containts: 65XE Computer. its data recorderXC12 and its pystick, with ten games. for £62.50 plus £4 insured delivery.

AGAIN AVAILABLE: ASTEC PSU. Mains operated switch node.so very compact. Outputs: +12v 2.5A, +5v 6A, ±5v .5A. ± 12v .5A Size:71/4ln long x 43/4in wide x 23/4in high. Cased ready for use. Brand new.Normal piece £30+. our pica only £10. Our ref 10P34.

VERY POWERFUL 12 VOLT MOTOR. bend Horsepower Made todrive the Sinclair C5 electric car but adaptable to power a go-kart amower, a rail car, model railway. etc. Brand new. Price £20 plus C2postage. Our ref 20P2.

PHIUPS LASERma Is hellum-neon and has a power rating of 2111w.Completely safe so long as you do not look directly Into thebeam when eye damage could result. Brand new full spec,£30 plus £3 insurod delivery. Mains operated power supplyfor this tube gives Mtn striking and 1.25ky at 5mA running.Complete kit with case £15, ditto for 12v battery. Also C15.Our ref 15p22.

ORGAN MASTER. Is a three octave musical keyboard 11 is beautifullymade. has lull size (piano size) keys. has gold plated contacts and iscomplete with nbbon cable and edge connector. Can be used with manycomputers, request imorrnation sheet. Brand new, only El 5 plus £3postage. Our ref 15P15.

FULL RANGE OF COMPONENTS at very keen prices areavailable from our associate company SCS COMPONENTS. You mayalready have their cateogue, if not request one and we will send it FOCwith your goods.HAND-HELD VIDEO LAMP. Mans operated and wit enable you totake professional standard videos Made by the famous FergusonCompany. tnis uses a 1000w halogen lamp in a fan cooled, nand -held andhand -switched metal housing Comes complete with optional ham -doorassembly and camera bar. Obviously intended to retail at over £60, weoffer these at £30 each plus C3 Insured delhewy. Our ref 30P3.HIGH RESOLUTION 114014rTCNR. 9in black and weds. uses Philipstube M24/306W. Made up in a lacquered frame and has open sides. Madefor use with OPD computer but suitable for most others. Brand new. £16plus E5 post. Our reference 16P1.

12 VOLT BRUSHLESS FAN. Japanese made. The popular squareshape (412in x 41/2in x 13/4in). The electronically run fans not onlyconsume very Mlle current but also they do not cause interference as thebrush type motors do lineal for cooling computers. etc.. or tor a caravan.£8 each. Our ref 8P26.

MONO RADIO CASSETTE RECORDER. AMTM vdt, all thenormal controls In 'as new' condibon but agstomer returns or shop rejects,so may need attention. Peas £10.Order Sol these and get a sixth one free.Our ref 10P66.

FDD BARGAIN31/2m made by Clarion of Japan. Single sided, 80 hack Shugartcompatible interlace, interchangeable with most other 312tn and51/4in dines. Completely cased with 4 pin power lead and 34 pincomputer lead. £40 plus £3 ins del. Our ref 40P1.

MINI MONO AMP. on pcb. size 4" x 2 (app.)Filled volume control and ahole for a tonecontrol should you require it. The amplifierhas three transistors and we estim-ate the output to be 3W ens.More technical data will be includedwith the amp Brand new.parted condition. offered at the verylow price of E1.15 each of 13 for C12.00

J & N BULL ELECTRICALDept. T.V. 250 PORTLAND ROAD, HOVE,

BRIGHTON, SUSSEX BN3 501.MAIL ORDER TERMS: Cult P.O. or cheque with order. Orders under £20 add£1 50 service charge. Monthly account orders accept from schools and publiccompanies Access 8 Bard orders are accepted - minimum £5 Phone (02731734648 or 203500

MOSFETS FOR POWER AMPLIRERS AND HIGH CURRENT DEVICES.140v 100w pair made by the famous Hitachi Company. Reference 25K413and its compliment 25J118. Only f4 the pair. Our ref 4P42.

HI -VOLT CAPS. Not ceramic but the much more reliable foil type. Goodrange from 1 nf to 35uf at voltages 1kv to 2.5kv. Keen prices, good quantitydiscount. Request list.

AGAIN AVAILABLE -THE SOUD STATE RELAY. Will switch up to 10A ACload and ::an be triggered by very small current from photo cell, computer,etc. £2 each. Our ref 2P183.

BATTERY OPERATED TRAVEL MECHANISM. On a plastic panel measuringapprox gin x 31/2in. Is driven by a reversible 12v battery motor, fitted withpulley anc belt which rotates a threaded rod and causes a platform to travelbackwards and forwards through a distance of approx Sin. Price £5. Our ref

5P140.

MAINS OPERATED WATER VALVE with hose connection for inlet and outletsuitable for low pressure. Auto plant watering. etc. Only £1 each. Our ref60370.

20 VOLT 4AMP MAINS TRANSFORMER. Upright mounting with fixing feet.Price f3. Our ref 3P59.

12 VOLT SOLENOID. Has good Sin pull or could be made to push d fittedwith a rod Approx 11/2in long by 1 in square. Price £1. Our ref B0232A.

16 OHM PM SPEAKERS. Approx 7in x 4in. 5 watts. Offered at a very lowpnce so you can use two in parallel to give you 10 watts at 8 ohms. £1 forthe two. Cur ref 130684.

ENT TRANSFORMER. 41. 2m4 Ex -unused equipment. £5. Our ref 5P139.

4 CORE TINSEL COPPER LEAD. As fitted to telephones, terminating withOat BT plug 2 for f I Our ref BD639.

EMT TRANSFORMER. 8ky 3mA. C10. Our ref 10P56.

DOUBLE NICROORIVES. We are pleased to advise you that the DoubleMicrodhve. which we were offering at about this time last year as beingsuitable forlhe 'OL'. 'OPD' and several other computers are again available.

same price as before namely £5. Our ref 5P113.

VERY USEFUL MAGNETS. Flat, about 1 in long, 1/2in wide and 1/4in thick.Very powerful. 6 for £1. Our ref BD274(a).

ACORN COMPUTER DATA RECORDER. Ref ALF03. Made for the Electronor BBC computers but suitable for most others. Complete with mainsadaptor, leads and handbook. £10.00. Ref 10P44. Add £2 special packing.

SOLAR CELLS. Will give a good current (depending on size) from sunlightor bright daylight. Module A gives 100mA. Pnce £1. Our ref 80631. ModelC gives 40OrnA Price C2. Our ref 2P199. Module D gives 700mA. Price

Our ref 3P42.

SOLAR POWERED NI -CAD CHARGER 4 NI -CAD batteries M (HP7) chargedin eight hours or two in only 4 hours. It is complete. boxed ready to useunit. Price 1'6. Our Ref. 6P3.

METAL PROJECT BOX. Ideal size for battery charger. power supply etc:sprayed grey, size r x 41/4" x 4" high, ends are louvered for ventilationother sides ere flat and undated. Order Ref 2P191 Price £2.

4 -CORE FLEX CABLE. Cores separately insulated and grey PVC coveredoverall. Each copper core sized 7/0.2mm. Ideal for long telephone runs orsimilar applications even at mains voltage. 20 metres £2. Our Ref. 2P196 or

100 metres cull f8. Order Ref. 8P19.

6 -CORE FLEA CABLE. Description same as the 4 -core above. Price 15metres for Our ref. 2P197 or 100 metres £9. Order ref. BPI.

13A PLUGS. Sleeved and complete with fuse, parcel o15 for f2. Order Ref.

2P186.

13A ADAPTERS - Takes 213A plugs. packet of 3 for £2. Order Rel. 2P187.

-0 - 2Wr - Mains transformers 21/2 amp (100 watt) loading, tappedprimary. 20Q-245 upright mountings £4. Order Ref. 4P24.

BURGLAR ALARM BELL. 8" gong OK for outside use if protected from rain.

12V battery operated Price f8. Ref 8P2.

CAPACITOR BARGAIN - axial ended - 4700uf Or 25v Jap made. Normally50p each, bi.t you will get 4 for f1. Ref. 613.

SINGLE SCREENED FLEX 7.02 copper conductors, pvc insulated then withcopper screen, finally outer insulation. In fact quite normal screened flex.10m for ft Our ref BD668.

M.E.S. BULB MOLDERS. Circular base batten type fitting. 4 for £1 Our refDB127s.

SPRING LOANED TEST PRODS - heavy duty, made by the famous Bulgincompany. Very good quality. Price four for f1. Ref. BD597.

3 CORE FLEX BARGAIN No. 1 - Core size 5mm so ideal for long extensionleads carrying up to 5 amps or short leads up to 10 amps. 15mm for £2.Order Ref 2P189

3 CORE FLEX BARGAIN No. 2 - Core size 1.25mm so suitable for longextension lea& carrying up to 13 amps - or short leads up to 25A, 10m for£2 Order Ref 2P190.

ALPHA -NUMERIC KEYBOARD - this keyboard has 73 keys with contactlesscapacitance switches giving long trouble free life and no contact bounce.The keys are arranged in two groups, the main area field is a OWERTY arrayand on the right is a 15 key number pad, board size is approx. 13" x 4" -brand new but offered at only a fraction of its cost namely £3, plus £1 post.Ref 3P27.

IATH HORSEPOWER 12 VOLT MOTOR. Made by Smiths, the body lengthof this is approximately 3in, the diameter 3th and the spindle 3/168 of aninch diameter. It has a centre flange for fixing or can be fixed from the endby means of 2 outs. A very powerful little motor which revs at 3.000 rpm.We have a large quantity of them so if you have any projects in mind thenyou could rely on supplies for at least two years. Pnce ES. Our ref 6P1.discount for quantities of 10 or more.

3 VOLT MOTOR. Very low current so should be very suitable for workingwith solar cells. C1 each. Our ref B0681.

MINI SPEAKERS to use instead of headphones with your personal stereo -simply plug in is earphone socket. Excellent sound quality, only £4 per pair.

Our ref 4P34.

INNER EAR STEREO HEADPHONES. Ideal for lady listeners as they will notmess up your hair do! Come complete in a neat carrying case. Price £3. Our

ref 3P56.

STEREO HEADMIONE AMPURER. Very sensitive. A magnetic cartridge or

tape head will drive it. Has volume control and socket for stereo

headphones. 3u battery operated. £1 each. Our ref BD680

FET CAPACITOR MICROPHONE EAGLE 0.200. Output equivalent toe highclass dynamic microphone while retaining the charactenshcs of a capacitormicrophone. Prix f 1 . Our ref BD646.

SUB -MIN TOGGLE SWITCH. Body size 8mm oi 4mm x 7mm SBDT withchrome dolly fixing nuts. 4 for f1.00. Order ref 80649.

SUB -MIN PUSH SWITCH OPOT. Single hole fixing by hexagonal nut. 3 for

£1 Our ref 80650


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120 pieces £7.75 Solvent 2.19 Silicone Grease -Tube 2.25120 pieces £7.75 Switch Cleaner Lub 1.50 Silicone Grease -Spray 1.85

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ORDERING.

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Both wiresTHYRISTORS A to 2TRANSISTORS A si ZITIANSISTORS 3421

Bath volumes EllalFel no, el RANA Beer e TIPPAVIO/A6VALS agINTRODUCTION TO SATELLITE TV SSFens Loudspeaker BOUM. Dog 8 Carron.

54 Pare 135

All components are orand new and to full specifit.,add £1.00 postage/packing (unless otherwise specified) to all ordersMinimum order £5.00. Either send cheque/cash/postal order or send/telephone your Access or Visa number. Official orders from schools,universities, colleges etc most welcome. (DO not forget to send for ourcatalogue - only £1.00 per copy). Delivery by return on ex -stock items. Allprices subject to change without notice. RETAIL shop open Mon -Sat9.00-5.00. Sat 9-12.00. REMEMBER ALL PRICES NOW INCLUDE VAT

EDITORJohn A. Reddihough

Please note that the telephone numbers beloware for contact with the advertisement depart-ments only. Editorial enquiries should be sent tothe editor at the address given on page 813.

ADVERTISEMENTMANAGERDavid W.B. Tilleard01-261 6671

SECRETARYJanet Reeve01-261 6671

CLASSIFIEDADVERTISEMENTSPat Bunce01-261 5942

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SUBSCRIPTIONENQUIRIES0444 440 421

CORRECTIONSThe address of Celtel Ltd. - see Com-puter Programmed RC System lastmonth - is now PO Box 135,Basingstoke, Hants RG25 2HZ (tele-phone no. 0256 474 900).

The final item in VCR Clinic lastmonth (page 755) relates to the Fergu-son 3V29, not 3V39.

The 25KX1201 portable mentioned inTV Fault Finding last month (page 768)is a Pye model, not Philips. The Philipsequivalent is the 10CX1120, also men-tioned above under the headingCX1120.

COVER PHOTOA lady video engineer for a change,shown making probe/pulser checks onthe syscon logic circuitry in thePanasonic NV333 VCR. See article onpage 848.

Product DevelopmentDid you know that in 1950 the UK was the world's largest exporter of motor vehicles?That probably doesn't mean a lot, since at that time the world was still recovering fromthe devastation of World War Two. It does however mean that the UK's motor industrywas in a strong position to develop and establish itself firmly as a world leader. It didn't.Compare the situation today. In 1988 the UK's trade deficit was a record £6.1bn, andthe situation has since worsened. Yet from the early Thirties to 1955 the UK hadEurope's largest motor industry. Today the indigenous industry - what's left of it -appears to be doing next to no development work an new products (the last launch, theMontego, was in 1984). From the production point of view the situation is expected toimprove dramatically by the late Nineties, because of the plants being set up by Japanesemanufacturers. Interesting that in 1952 Nissan was producing Austin cars under licence.It's a searing story of industry failure.

The UK's domestic electronics industry and its automobile industry have longfollowed similar paths. Back in 1950 there was much TV development work being doneand the industry was getting into its stride. It was certainly at that time ahead of anythingin Europe or Japan, and the US industry was only just restarting after war -timerestrictions on production. The situation today is almost exactly as in the automobileindustry, apart from the fact that the Japanese got into the act to help out a decade or soearlier, with the result that the trade balance is not nearly so bad - in fact it has beenpositive in recent times. But there's still almost no development work being done.

There's a saying that today's development is tomorrow's profit, or something like that.The time -scale with the sophisticated products of today is of course rather longer.However that might be, the corollary is tha no development work today equals noprofits tomorrow for whatever is left of the UK -owned consumer electronics productsand automobile industries.

One wonders whether UK industrialists/boardrooms have ever been really serious.Things have started and stopped in half-hearted ways, sometimes in almost bizarrecircumstances. There's a story that one of our once leading consumer electronics firmswas started up simply as a means of getting rid of a spare line of mains transformers.That sort of thing was perhaps not uncommon in the Fifties, when many small firmsstarted up and eventually merged or fell by the wayside. In those days you could designradio sets and suchlike from a simple data sheet. Change the values of a few resistorshere and there to get the tolerances right, then get a lot of young ladies busy withsoldering irons. A world quite different from today's sophisticated production engineer-ing. A sort of spontaneous getting in when a market seemed to exist. Yet the UK'sdomestic electronics industry keep up with things well into the solid-state era. Some ofthe first transistor radios were produced in the UK and research was being done onsolid-state electronics.

The Japanese phenomenon is not something new. Most of the well-known Japanesefirms have histones that go back much farther than the UK ones now bought out ormerged into overseas concerns. Sony is the best-known exception, being started in theimmediate post-war era. Sharp was started in the early Twenties, Matsushita dates fromthe first world war period, while Hitachi, Mitsubishi and Toshiba have yet longerhistories, some being started up in the nineteenth century. These firms established firmroots, survived the depression years and the trauma of World War Two, thenmushroomed in recent decades to assume their present dominant positions.

It takes professionalism and dedication to do this. Contrast the amateur ways of UKfirms. One thinks for instance of the famed EMI body scanner, an electronicdevelopment that put the UK in the forefront of medical electronics. But havingdeveloped the thing EMI took it no farther. The later versions came from elsewhere.Why does this sort of thing happen so often? Could it perhaps be connected to the lackof engineers or those with some engineering knowledge in boardrooms? It's difficult topersuade accountants that money has to continue to be spent on development work.Like the Japanese, the Germans and others do not lack engineering knowledge in thehigher echelons of industry. Our education system has a lot to answer for in this respect.

Today's mass markets are not built solely on the basis of engineering expertisehowever, vital though this is. The ability to produce goods inexpensively and well is nogood if the market is not there. Here again the Japanese have long done the right thingin following the path of market -led development. A lot of effort is put into establishingwhat the public would find useful and what it would be prepared to pay. This has meantthat many items are produced and tried out and are then quickly dropped. The cost of afew failures is readily covered by the major successes

Trying to find out what the public might want is of course a time-consuming business.But it's not only a matter of new products. Have you noticed how often the Japanesecome up with just the right combination of features in a particular product? It's all amatter of careful market research.

It seems that from every angle UK industry has failed. Innovation, productionengineering and market research: all have been tackled in a half-hearted way, with littlesense of commitment. It's not so surprising then that things have ended up in theirpresent sorry state.

TELEVISION SEPTEMBER 1989825

Repairing Remote Control Units

Much domestic electronic equipment nowadays relies on aremote control unit - very often the equipment cannot beoperated without the handset, or operation is very limitedwithout it.

The circuits of modern remote control units can beawesome. Some have built-in screens, will talk back, andhave send and receive operation. The service policy ofdifferent manufacturers varies. Spare parts for the cheaperunits are very often not supplied, it being simpler tosupply the complete unit. Many dealers adopt a similarpolicy - they advise customers to buy a new unit ratherthan have an old one repaired. Personally, I'm not infavour of replacing anything unless it's absolutely nec-essary - in my view panel and handset replacement mustrate amongst the most inefficient practices in this trade.Handset repair can be profitable and straightforward, andif you can save your customer some money and make agreater profit yourself it can't be bad, can it?!

In this article we'll go through the various types andgenerations of handset, describe basic faults and outlinethe repair procedures required. Spares can very often be aproblem, but we'll give some advice on this too.

Cord TypesThe cord remote control units you're most likely to

encounter now are those used with early VCRs. Mosthave a single screened lead that's terminated with astandard audio jack plug, typically 2.5 or 3.5mm in size.Push -switches bring different resistances into circuit.These represent an extension of the on -board controlcircuits. The other approach is to have a multicored cablewith DIN plug termination and just switches (no resistors)in the handset. This arrangement is bulkier.

Likely faults, as you would expect, are breaks in thecables and plugs. With a single screened cable the breakcan occur anywhere along its length. It usually occurs inthe screen rather than the core, presumably due tostretching. With multicored cables the breaks tend tooccur at either end, particularly within the DIN plug. Ineither case the plug is usually moulded on, so repairinvolves cutting off the old one and fitting another.Repairs of this sort can be carried out using normalworkshop stocks of cable and plugs. Note that with thistype of fault you will often get the customer on the phoneshortly after collecting his unit to say that it still doesn'twork. This is invariably due to the socket in the VCRbeing faulty - damaged when the customer tripped overthe cable! Making a simple continuity or resistance test inthe workshop will confirm that the unit works without the

tn)

Fig. 1: Battery contact problems. (a) One hundred per centnegative plate surface area contact. (b) Reduced contactwith domed negative plate.

(a)

Nick Beer

need to connect it to a VCR.The only other problems you are likely to encounter are

print breaks. These are usually easy to detect and repair.The switches used are generally just that, not mat and padcontacts (see later), so they are pretty reliable. Shouldthey fail replacement is the only real answer. In mostcases this is not a problem. If the manufacturer cannotsupply a replacement a search through the advertisementsin Television will usually reveal something that's suitable.

Ultrasonic UnitsThough ultrasonic remote control handsets are rather

old now many sets that use them are still going strong, forexample some of those fitted with the Decca 100 andPhilips G11 chassis and the B and 0 35XX series.

There are two major types of fault, no or intermittentno results with all or some functions, and buttons doingthe wrong thing. The former type of fault is caused bypoor joints etc., see below. Another thing to check is theultrasonic transducer. These tend to go open -circuit,especially after being dropped. The second type of fault isdue to incorrect frequency tuning. Check any coils fordamage, cracked or missing cores etc. If no reason fordrift can be found realignment is the best course. Ifpossible do it with its own set. This can be a fiddlybusiness. Check for drift over a few days.

Infra -red UnitsThe infra -red remote control unit is the most common

type. It succeeded the ultrasonic type with its ratherlimited number of functions. Although there were ultra-sonic teletext units they were not common, and the adventof text led to a change over to infra -red devices. Onceagain there are a limited number of basic faults.

The most common symptom has to be no go. Evenwithout a circuit diagram much can be done to establishthe cause. The first thing to do is to check the battery/batteries. Always check on and off load. Many tests canbe made, such as current consumption, and these can behelpful. But as such units generally have few componentsgeneral tests can be more time consuming than tests onindividual components. Check visually for dry -joints onthe infra -red diode(s) and for broken leads on transistorsand in particular the crystal. Often a solder round willcure the fault, but make sure that you keep the unit andtest it for several days afterwards as a faulty i.c. can betemporarily cured by the application of heat - you maythink that you've cured the trouble only to find that itcomes back.

Intermittent no go can be caused by any of the faultsjust mentioned, but is very often due to poor batterycontacts. The cause of this can be tarnishing, spillage orbattery design. The latter applies particularly withDuracell batteries that have rounded/domed contactplates, see Fig. 1. When this type of battery is fitted in ahandset with contacts that have a small surface area, e.g.in some Panasonic units, the result can be intermittentoperation. Borderline battery output voltage is another


sufficient mechanical strength. Such breaks often occur

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nrn

To key matri(columns)

Encoderand

modulator

100pF

T, T

0.75V p -p

From key mat is(rows)

Fig. 2: Typical simple infra -red handset circuit.

Push buttons

.........Rubber mat

la)

Carbon pads(close contacts Carbon

on PCB) contacts

)b)

Carbon tracks-often wrth coppertracks beneath

102711

Fig. 3: Mat contact assemblies. (a) Contact mat. (b) Sectionof PCB.

Apply pressure with screwdriver

162711

Fig. 4: Opening a click -fit case.

Top

71 Bottom

common cause of intermittent operation.Fig. 2 shows a typical infra -red remote control transmit-

ter circuit. For excessive battery drain check the electro-lytic capacitor across the battery and the i.c. For nooutput check the IR diode, the transistor and the outputfrom the i.c.

The keypads used in infra -red remote control units varyfrom the rubber pad and carbon contact type to actualcopper sprung contacts and membrane/foil arrangements.With the latter, replacement is usually the only viablemethod of repair. These usually plug into an edge connec-tor on the PCB and breaks in the tracks here arecommon. It's worth checking this before ordering areplacement as repair can be carried out with RS conduc-tive silver paint.

PCB Faults and RepairBreaks in PCB copper tracks are in general easy to

repair, but with a handset there may be minor complica-tions due to the limited space or infringement of contactarea. The best way to deal with a break is to run a leadbetween the nearest soldered joints on either side, but forthe two reasons just mentioned you might have to settlefor scraping off the lacquer and bridging the break withtinned copper wire. If this is necessary, ensure that whenthe case is closed nothing is fouled and that there is

where a PCB clips into the case: if the repair doesn'tstrengthen the board it's likely to flex, causing furtherfailure of some functions. You can use Araldite or thin

Dl a' sheets of Paxolin glued on to strengthen the board. Again,Trl you may be restricted by space. If all else fails you'll have

to replace the PCB. The boards are usually available asspares minus the components. Swapping over the compo-nents doesn't take long, but if you are making an estimatedon't forget to allow for this.

Another common type of PCB failure is where thecarbon type contact and mat arrangement is used - seeFig. 3. The contacts on the mat or PCB wear, causing lossof one or more functions. Depending on the severity ofwear and the constitution of the PCB underneath, this canusually be repaired with soft pencil lead. Either redraw

052701 the track several times or grind the lead finely and gluethe powder in place. This is more likely to be requiredwith the mat. If more than the odd contact is affected it'sbetter to replace the whole mat. The average manufac-turer unfortunately doesn't keep these in stock for longand after that it's worth trying to carry out a repair. If youdo, bridge with TCW lacquer or varnish over but be verycareful not to insulate any contacts used by the keypad.

Another fault that occurs, particularly with this type ofPCB that has layers of carbon print over copper print, iselectrical leakage. The symptom is usually transmitting allthe time. You can spend ages changing components onlyto find that the fault persists - it can be difficult todiagnose the cause of this trouble in any other wayhowever, unless you are familiar with the unit. Thehandset used with the Salora J chassis (and Hitachiequivalents) for example is prone to this trouble. Whenyou've replaced the PCB, snap the old one in half so thatif it should lie around for a while you don't use it bymistake.

If copper contacts are used and these are worn they canoften be repaired by soldering over. Take care not to doany more than tin them or you could end up with apermanent contact.

Case FaultsHandset construction varies tremendously, but there

are some basic patterns. The majority are PCB based withthe PCB fitted in the top half of the case. The buttons,whether individual or a rubber mat, fit through the tophalf as well. The bottom half contains the batterycompartment, the two halves clipping together. We'll looknext at case dismantling and some of the faults that canarise.

The battery cover is usually clipped into the rest of theunit, being held only by its own elasticity. Not surprisinglythese tend to wear out. The modern trend is to clip thecase together without the use of screws. This means thatto open up the unit you have to push the side of the casewhere the clips are situated, at the same time levering thetwo halves apart. This must be done very carefully - seeFig. 4. It's best to use a plastic screwdriver or to cover themetal blade. Sometimes space prohibits this and it'simpossible to avoid marking the case. For this reason wekeep in stock spare cases for certain Panasonic units andreplace them after carrying out a repair. Minor indenta-tions can very often be smoothed down using fine wet anddry paper.

With regard to presentation and finish, if you have toorder parts to complete the repair check the case and anyprinted plates for signs of wear, discolouration or fading.


In view of the cost it's well worth replacing these torestore the appearance of the unit. I have in mindparticularly the handsets for Ferguson VCRs such as the3V53/5 etc. where the button functions are printed on analuminium fascia that's stuck to the upper case. Thesewear, marring the appearance and losing the buttoninformation. Replacements cost around £1.50. We alwaysreplace this when doing up a VCR for re -renting or sale.

DisplaysHandsets with displays are becoming more common. So

far we've had very few faults in this area. Most units haveLCD screens but LEDs are also used, for example withthe B and 0 MCP5500. The main problem with LCDtypes is dust getting between the layers of the sandwich.This is easily remedied in a clean area. Remember toclean gently with anti -static fluid otherwise you will attracteven more dust. Corrupt displays are often caused by alow battery or the driver i.c. Remember that these put aheavy demand on the battery/batteries - most incorporatean auto shut-off circuit.

Bar ScannersDigital bar scanners are certainly very popular with our

customers. Panasonic developed this system, which is alsonow produced under licence for Amstrad/Fidelity. By farthe most common trouble is a blocked sensor. Customerslet the units get filthy, the relatively small hole becomingblocked so that it can't read the codes. Such units shouldalways be kept in their wallet, and the little brush suppliedfor cleaning them should be used regularly. There are nowcombined scanners/handsets, but these are felt to beclumsy and difficult to use - it's difficult to keep them atthe right angle. The charts on which the codes are printedare plasticised but do wear. Replacements are cheapenough.

Dealing with SpillageSpillage is a common problem. Often it's not men-

tioned. No go or transmitting continuously are the usualsymptoms. Very often the liquid ingress is slight - aroundthe buttons and over the contact area of the PCB.Depending on the time that has elapsed since the spillageoccurred the unit may be a write off or may just requirecleaning.

If the contacts are damaged and the legs of componentsare corroded it's best to supply a replacement unit. Ifcleaning will suffice this should be done with isopropylalcohol. Don't be tempted to use something stronger,such as solvent cleaner, as this will tend to dissolve carbonprint and lacquer. Wash cases and buttons in soapy water.To avoid buttons that stick, completely dismantle the caseinto its component parts and clean thoroughly.

Testing Cordless HandsetsThe ideal way of testing a cordless remote control

handset is with the unit it controls. This is seldom possiblehowever. A number of testers which give either anaudible or visual confirmation that an infra -red or ultra-sonic unit is transmitting are available. I've used severalover the years and have found that the Konig type fromWillow Vale is the most reliable. We had two of thePlanet type and they both failed continually. On one such

occasion an apprentice came up with a very useful sugges-tion. He fitted an IR receiving diode into the plastic blackcover of a quarter -inch jack plug, added a BNC plug andconnected this to a scope to check for emission. This is analternative if you like.

SparesWhether some/all spares are available tends to depend

on the manufacturer. This is not too much of a problemwhen it comes to transistors and diodes - if necessaryequivalents can be sought. Resistors and capacitors areeven less of a problem. The only point to watch here is thephysical size of capacitors. Very often low -voltage capaci-tors with relatively high values are used and the equivalentvalue with a more usual voltage rating will be too large.You will often find 100µF or 220µF capacitors rated at6.3V for example. These are available from RS, WillowVale and other sources however. The i.c.s tend to becommon between units of different manufacture and alook through distributors' catalogues or the adver-tisements in Television should reveal a source of supply.Standard IR diodes and ultrasonic transducers are avail-able and should be kept in stock.

If you want a non-standard part and the manufacturercannot supply this it's worth checking whether the unit is aclone or is badge engineered. Often the other manufac-turer can supply spares. For example, Salora cannotsupply certain spares for handsets made by Sanyo, butSanyo can. It's worth a look around.

ChargesIt a new handset costs say £25 you can't apply the usual

£15-£18 an hour labour charge. It's quite possible howeverto make a fixed charge of say £7 and see a decent return.Very often few if any parts are required. Few handsetsshould take more than half an hour to sort out. In the caseof a handset costing £70 to replace (B and 0 for example)the customer will be pleased indeed if you repair his unitfor say £12.

Many customers don't even bother when a handsetfails. Others assume that they have to be replaced.Customer education in the form of a notice in the shop orin your advertising should generate a bit of business and alot of goodwill. If you give the unit a good clean up,replace slack battery covers etc. you will restore thehandset to almost new condition.

DevelopmentsThings have developed by leaps and bounds over the

years, to the stage where some handsets have looked likethe flight deck of Concorde. This was the fashion for awhile. We've had multi -function remote control units thatcontrol the TV set and the VCR, now we have pro-grammable units that replace three or more units. Flapsthat cover up most of the buttons are appearing, forexample with the new Al series of Panasonic colour TVsets. Extensive use is now being made of menus and on-screen displays - this means that we could soon be backwith handsets that have only about six buttons but will stillcontrol everything. The home automation idea hasn'treally taken off yet but it will probably come. Manycustomers are feeling the benefit of integrated systemssuch as the Bang and Olufsen Link, where the latestaddition is a light controller that can be operated from theBeolink 1000 handset.


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K30 IF/X35 IF £2.00

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TX9 THORN Tuner Panel with ICS Puts & mains trans. 13.00

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You Won't Believe This . . .

We've had a wall built around the rear garden of thebungalow. Not to keep intruders out but to keep the dogsin. The rear garden has also been concreted, again for thedog's use. As repair business at the shop dried up wemoved to the bungalow, with the dogs, cat and bird,hoping that the shop will sell before long.

The bungalow is in a secreted part of a housing estatebuilt well after the war on a site previously occupied byGravesend Airport, which was used by Fighter Commandduring the war. When an invasion was expected in 1940 allthe runways were mined. The public was not informed ofcourse. All these years later the Royal Engineers havebeen instructed to locate the long tubes of explosives andmake them safe. So two days after we arrived we weretold that the whole area is to be examined, using metaldetectors, and eventually made safe. What a welcome!

Anyway, we've not been blown up yet and the shoptelephone number has been transferred to the bungalow.

The other day a man phoned to say that the Decca TVset (80 series chassis) he bought from us some years agosuffered from field collapse after it had been on for aboutfifteen minutes. He said that hitting the top of the setrestored the picture, so I thought it would be a dry -joint. Itold him I would be at the shop in ten minutes. When Igot there I waited for him to appear. He didn't. So afterhalf an hour I drove to his house. He opened the frontdoor and said "I thought you said ten minutes?"

"I said I'd be at the shop in ten minutes. That wayyou'd have avoided the call -out charge."

After removing the right-hand side timebase panel Iresoldered all the field timebase connections. I thenturned the set round and fitted an aerial. There was agood picture when I switched on. It was still there half anhour later.

I replaced the back and suggested a charge of £20. Heflinched. "That includes the call -out charge," I explained.

He paid me and I drove off. Before I got very far I washeld up by traffic. While waiting I saw the chap I'd justleft chasing up the road, so I backed down to meet him.

"It's gone again."Back to the house again. When we got there the set

looked perfectly all right."Blast. It's come back again.""I bet your wife was upset," I said."Oh no, this is my set. She's watching hers in the front

room."I took the back off again and watched for another half

an hour. It was obvious that the fault was not a dry -jointas I'd assumed. It occurred only when the back was onand the temperature rose. I'd no hairdryer with me tomake heat checks on the components and it struck methat this would be best done in the shop. I told him I'd calllater to pick the set up.

When I got it to the shop I managed to create the faultby pulling away at the upper left plug and socket on theright side timebase panel. So I took the panel out andresoldered all the connections. There was a clear picturewhen I switched on again. After refitting the back I let theset run for an hour or so. Then, confident that all waswell, I put it into the estate car carefully and returned it toMr. Evans.

Les Lawry -Johns

I was similarly gentle with the set when I got to hishouse. I plugged it in and connected the aerial. There wasa white line until I clouted the top of the set and a pictureappeared. This was too much. I returned the £20 andapologised. In fact I practically ran out of the house. ButI've an idea that the set will be all right after this.

The Midday ClinicWhen I got back to the bungalow the phone was

ringing. A G11 I'd repaired several weeks ago had gonewrong. I asked the owner to bring it to the shop at abouttwelve the following day. Shortly afterwards a lady rang tosay that her ITT portable had a funny fault - the soundwould go off until the aerial plug was waggled about. Iasked her to bring the set to the shop midday tomorrow.

So just before midday I packed my stuff into the carand sped off down to the shop. The G11 was the first oneto arrive. The holder at the back didn't hold a remotecontrol unit. I switched on and a red light appeared.Nothing happened when I pressed the button, and switch-ing off and on again made no difference. There was life onthe power supply panel, but only 50V at the fuse. I

checked here, there and everywhere but couldn't get theh.t. to rise. The reservoir capacitor was of the blue weldedtype. I'd fitted it some time ago and it checked o.k. Afterspending some time checking through the power supplycircuit I'd got no further and gave up. Another failure.

Shortly after the ITT portable arrived. I removed thecover and found that the sound came on and went off asthe coaxial aerial lead was juggled about over the tunerand i.f unit. No dry -joints could be seen when the chassiswas taken out, but I did find that when the tuner etc. washeld in one position the sound didn't go off. So I fitted awedge. I showed the lady what I'd done and explainedthat in my opinion the fault was in the tuner-i.f. unit, butthat I didn't have a replacement. She seemed happyenough and left me a pound for my trouble. I know that Ishould have removed the unit and stripped it down, but Ididn't have the patience. Sorry.

Another GllAnother call had come in while I'd been away. A G11

with field collapse. When I arrived at the house I foundthat the owner was the best friend of an old friend ofmine, so I resolved not to give up this time.

After removing the rear cover I checked that voltagewas present at the TDA2600 field output chip. I thenfitted a new TDA2600, with the clip under it, and refittedthe heatsink. The line was still there. I told the owner Iwouldn't be long and sped off to the shop, hoping to findanother panel. As luck would have it I'd kept an old G11with a duff tube. After extracting the upper left panel Ihurried back to the house and fitted it. I crossed myfingers and switched on. The picture appeared and I wasgreatly relieved.

I felt guilty about charging them £25, but they seemedto be quite happy and I went off with the faulty panel. I'llfind the fault on it when I have time. Meanwhile all thebest to you all.


TeletopicsBUSINESS PROSPECTSWhile sales of consumer electronics goods in the UKremain flat, the latest report from specialist market re-searchers BIS Mackintosh paints a hopeful picture of whattrade will be like in the European Community come 1992.Its predictions, compared to 1988, are as follows:

Market

TV setsVCRsCamcordersAudioOverall consumer electronics

1988 1992

£8bn £9.15bn£4.12bn £4.9bn£1.2bn £2bn£9bn £10bn£22.3bn £26.7bn

BIS Mackintosh suggest that thereafter the growth ratemight accelerate due to the effect of the single Europeanmarket. Amongst newer products, the report suggests thatthe market for satellite TV receiving equipment will bearound £300m in 1992. Camcorders are picked out as asection of the market where considerably increased de-mand is expected.

Meanwhile, back to reality. Following Ferguson's re-trenchment (see Teletopics last month), Tatung has an-nounced that just over ten per cent of its workforce atTelford is to be made redundant. Most of theredundancies will be in back-up rather than production -

line staff. Tatung blames the poor demand for TV setsand the failure of the satellite TV market to develop forthe need to make this move. Earlier, the company hadexpected to take on additional production -line staff duringthe summer to build up satellite TV equipment output inanticipation of increased sales later in the year. In anothermove, Thom EMI has announced the closure of its CTVtube plant in Sunderland. The plant was mainly involvedwith regunning tubes, some 85 per cent of the outputgoing to Thom EMI's rental chains. It was originallyestablished in 1950 for the manufacture of monochromeTV tubes. The switch to sets with FS tubes is cited as onereason for the reduced call for regunned tubes.

SKY AND BSBSky Movies' transmission hours have been increased to upto sixteen a day, starting at 2 p.m. and running toapproximately 5.30 a.m. The final film in each broadcast-ing day starts at about 4 a.m. and will usually be the mainfilm of the previous day. Meanwhile Sky Television isplanning a major move to increase its number of viewers,one aim being to take advantage of BSB's postponedservice start. Sky is to offer a rental package consisting ofreceiving equipment and a Sky Movies subscription at aprice expected to be around £4.50-£5 a week. This wouldmean Sky Television going into the rental market andwould represent a considerable investment on top of thepresent cost of running the Sky TV services, around £2m aweek. It's understood that the receivers would be suppliedby Amstrad and that an order has been placed for"hundreds of thousands" of them. A network of installersis being established.

BSB is still suffering from the consequences of itsdecision to adopt the high-tech approach to satellite TVbroadcasting. The difficulty over the ITT 2285 chip has ledBSB to reassess the possibility of using the Philips/Plessey

MAC decoder chip set. This is understood to cost around£27, which would increase the cost of receivers. There isalso continuing doubt about whether the Squarial will bemade available, particularly in view of the proposal to usereduced transmitter power in order to start the servicewith five channels from one satellite.

SERT's one -day seminar on DBS reception, postponedfrom June because of the railway strikes, has beenrescheduled for Friday September 15th, with an enhancedprogramme. It's hoped that there will be direct dem-onstrations from the BSB satellite, which is due to belaunched at the end of August. The programme willinclude presentations on Ferguson, Grundig and Saloraequipment. The seminar is to be held at the IBA Con-ference Hall, Brompton Road, London SW3. Additionaltickets are available at £75 (£60 for members of SERT)inclusive of lunch and VAT. For further details apply toConsert, 57-61 Newington Causeway, London SE1 6BL(telephone 01-403 2351).

SEME TO HANDLE PANASONIC SPARESSEME Ltd. has been appointed authorised supplier ofPanasonic spares to handle, from August 1st, all ordersoutside the manufacturer's own franchised dealer net-work. This development will ensure that non -accountdealers and service engineers will now have a speedyaccess to original Panasonic parts. A new sales office hasbeen established at Buckingham to deal specifically withPanasonic orders. Three new sales staff and a technicalliaison engineer have been trained jointly by SEME andPanasonic's head office at Bracknell. The Buckinghamoffice is directly linked to SEME's computer at MeltonMowbray, site of the company's warehouse.

SEME's Buckingham address is Chandos House,School Lane, Buckingham MK18 1HD. The new SEMEtelephone number exclusively for Panasonic spares isBuckingham (0280) 823 523 or fax 0280 814 916.

SERVICE AIDSFerguson has issued an extremely useful pocket book toassist with fault finding in the TX90 and TX100 chassis.There are separate sections on the various parts of thechassis, with symptoms and likely causes listed. It's avail-able under part number 10P1-552-001 from FergusonLtd., Service Division, PO Box 1594, Crown Road,Enfield, Middx EN1 1DY.

Robin Electronics, Hirst Hall, GEC Centre, East Lane,Wembley HA9 7YA has introduced a range of high -

quality safety test probes designed to fit many instrumentsincluding multimeters and insulation testers. All modelsfeature Robin's unique angled prod, have cable en-gineered in silicone for maximum flexibility and long life,gold-plated tips and terminations for minimum contactresistance, and colour coding in black and red for safe use.Price of the general-purpose SP25RA lead set for use withtest equipment that has 4mm shrouded sockets is £12-95.

CD AND DATThe price of CD players in Europe is set to rise followingthe decision by the EC to impose anti -dumping dutiesranging from 6.4 to 33.9 per cent on imports from Japanand South Korea. This move is the outcome of a two yearinvestigation by the European Commission following acomplaint lodged by Philips, Grundig and Bang andOlufsen. In the two years to 1987 the European produc-ers' share of the market fell from just over 50 per cent to


18 per cent. Selling prices will have to rise since under ECtrade law the duties cannot be deducted from profitmargins. The duties are expected to remain in force forfive years.

Digital audio tape recorders are expected to be on salein Europe and North America by Christmas, following anagreement reached between the world's recording andconsumer electronics industries. Consumer electronicsmanufacturers have agreed to incorporate in each ma-chine a device that will prevent it making more than onecopy of each original recording.

UP-MARKET WsSony has released a new top -of -the -range TV receiver,Model KV-FX29TU, with a host of features and asuggested retail price of around £2,000. It has a 29in.(68cm) tube and is compatible with S -VHS and hi -band8mm video equipment. There are Nicam and Fastextdecoders and an on -screen display for control operation.The digital circuitry incorporated includes sufficient mem-ory to be able to produce a flicker -free display and noisereduction. Of particular interest is the fact that it will workwith VCRs capable of handling NTSC and SECAM tapes.

Shortly to follow, at around £2,500, is a set with aneven larger tube. The KV-DX3412U will have a 34in.(80cm) screen.

Grundig plans to launch a set using the flicker -free(100Hz) technique at this year's Berlin Audio and VideoFair.

A US company, Northwest StarScan, claims to havedeveloped a signal compression system that enables anHD -TV transmission to be fitted into a standardbandwidth channel. Signal compression of ten times is

understood to be possible. This could significantly cut thecost of satellite TV transmissions.

TRANSMITTER PRIVATISATIONThe government has decided to privatise the UK's broad-casting transmitter networks (BBC and IBA) in theirpresent form rather than adopting the approach suggestedby Price Waterhouse (see last month). The BBC willretain its transmitter network until 1996, when the cor-poration's royal charter expires. The issue will then bereviewed. An announcement from the IBA has welcomedthe decision, and also the suggestion that a uniformtransmission tariff should be retained for the Channel 3companies.

CONFERENCES/EXHIBITIONSThe High -definition Television International 89 con-ference and exhibition is to be held on September 18 -19th1989 at the London Tara hotel. It's designed for thosewith little or no knowledge of HD -TV as well as for thoseworking on the development of this technology. Furtherdetails can be obtained from Meekler Ltd., GrosvenorGardens House, Grosvenor Gardens, London SW1WOBS (telephone 01-931 9985).

The fourth International Cable and Satellite exhibitionand conference will take place at the National Hall,Olympia, London from April 9 -11th 1990. For furtherdetails contact Cable and Satellite 90, 11 ManchesterSquare, London W1M 5AB.

The fourth International Broadcasting and Tele-communications Show is to take place in Milan fromOctober 12 -18th 1989.

TAYLOR U.H.F. TELEVISION DISTRIBUTION AMPLIFIERS

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VISATAYLOR BROS. (OLDHAM) LIMITEDBisley Street Works, Lee Street,Oldham, Lancs., England. OL8 1 EE

Telephone: 061-652 3221Fax: 061-626 1736Telex: 669911 Taylor G


VCR ClinicPhilips VR6468

This machine would accept a cassette normally, but ifwind or play was selected the cassette would eject. Acheck revealed that the microcomputer chip thought thecapstan wasn't turning even though it was! The tachopulses were missing - a new P687 amplifier module putthat right. P.B.

Philips VR6561

If play or wind was selected this machine would eject thecassette. The error memory showed that the capstan tachosignal was missing. R3509 (150) had gone high -resistance- it read about 60ft. P.B.

Philips VR6462

This machine played o.k. but wouldn't tune in a signal.We found that the tuning information pin 16 of theSAB3013 chip was at a higher voltage than it should havebeen as 17420 (BC547) was open -circuit base -to -emitter.

P.B.

Philips VR6468

There was no vision in E -E or play, though the testpattern worked. The +11.9b supply was missing as C2329on the signals board was short-circuit. The short had alsodamaged transistors 7607 and 7304 (both type BC328).

P.B.

Philips VR6180

This machine intermittently failed to accept a cassette. If itwas put into standby before the cassette was tried thedisplay would go bright, showing that the cassette inswitch was being sensed, but the tray wouldn't move. Nosupply voltage reached the control motor as there was adry -joint on plug B2. P.B.

Panasonic NV-G40/NV-G45

Two similar machines came in with different versions ofthe same fault. The first one, an NV -G40, had areluctance to capture and lock on to channels whensearch tuning. It would tune all the way through theu.h.f. bands, pulling in all the local, fringe and distantchannels but refusing to stop at any of them.

The manual contains no description of the search tunecircuitry but did provide a clue as to the area involved. Inaddition to running the clock and the displays, anddecoding the push-button inputs, IC7501 on the timerand operation panel provides tuning memory and digital -to -analogue conversion for the tuner and TV demodula-tor, via the channel select chip IC7551. During tuningsearch, as a signal is resolved the video from the tuner -demodulator is fed to the luminance/chrominance sec-tion and passes via the input/output CBA and emitter -follower Q3013 to pin 1 of IC3002. The sync pulses areseparated and fed, together with a 15.625kHz signal, to acomparator. Presence of a signal is detected by identify-ing line sync pulses - this results in a low at pin 9 ofIC3002. This low is fed back to pin 20 of IC7501. The

Reports from Philip Blundell, Eng. Tech.,John C. Priest, Eugene Trundle, Chris Plaice,Harvey Benson, lan Bowden, Alfred Damp andNick Beer

tuning scan then stops and the tuning point is locked,after which the memory button is pressed.

We found that by artificially introducing a low bymomentarily shorting pin 9 of IC3002 to chassis at thepoint during the tuning scan when a picture was resolvedit was possible to lock on to a channel. Pressing thememory button then stored the channel in the normalway. Using this technique, we were able to program allthe local channels. The machine would have been usablein this state provided the user didn't move to a differentarea or unplug his machine long enough for the tuningmemory to be lost. Resisting this temptation, also thetemptation to provide an extra push-button switch toshort out pin 9 during the tuning process, we pressed on.

Scoping the video waveform at the tuner -demodulator output and then tracing it along the path topin 1 of IC3002 showed that there was no loss of signalhere. Pin 9 of IC3002 should have been at 0.1V but wasactually at 4.75V and didn't vary whilst tuning. Replac-ing IC3002 (AN5421N) cleared the fault.

The second machine, an NV -G45, had exactly the samesymptoms. So after confirming channel lock by pullingdown pin 9 of IC3002 we replaced this chip. This timethe fault remained. Resorting to the scope we found thatthe video input at pin 1 of IC3002 was of very lowamplitude, less than 25 per cent of that at the base ofemitter -follower 03013. Further investigation showedthat one leg of C3055 (33µF, 16V) came loose from its canwhen moved. Replacing this capacitor finally cleared thefault. J.C.P.

Sanyo VHR4350

This one led us a merry dance. The head drum wouldn'tturn, though voltage was present at the drum motor andit was free to turn. The cause of the problem turned outto be dry -joints at CN823 on the deck -mounted junctionPCB. As a result the motor was off earth. You have toremove the deck to gain access for resoldering - do allthe joints while you are at it. E.T.

Panasonic NV -G7

The mode switches used in various Panasonic decks canbe troublesome. If you replace one in the D1 deck (NV -G7, NV -G10 etc.) don't use the VSS0110 type whichyou may have in stock for earlier models. It looks similarand fits perfectly, but electrically it's quite different,giving rise to some peculiar deck behaviour. The correctpart number is VSS0135. E.T.

Mitsubishi HSB20

There was a nasty buzz on the E -E sound with this newmachine. We fed the output from a colour -bar generatorinto the machine and found that the buzz disappearedwhen the generator's chroma signal was switched off.Attention was therefore turned to the- 6MHz filter circuitCF151. By making comparisons with a good machine wefound that although the output waveforms at pin 18 ofIC101 were similar they were different at the input to


CF151. After replacing various components in this areato no avail I was getting somewhat puzzled. L153, whichis connected between CF151 and chassis, had beenmeasured but as a last resort I decided to swap it overwith the coil from the good machine. This cleared thefault. Both coils were identically marked and gaveexactly the same resistance reading, so I can only assumethat the faulty one had a couple of shorted turns orperhaps a crack in its core. C.P.

Panasonic NV333

The job card said that the problem was intermittentfailure to eject, also other intermittent mode failures.When I checked the machine it behaved like a videopossessed. On application of power, sometimes therecord LED or the pause LED would light, play wasintermittent, and at other times the machine wouldreturn to stop after a few seconds. Occasionally thecassette housing would eject five seconds after thebutton was pressed!

My first thoughts were that perhaps the microcompu-ter control chip IC6001 was faulty or that maybe themode switch was defective. With this machine howeverI've found that the microcomputer chip is usuallyinnocent when there's a syscon fault. Changing it madeno difference, neither did removing, cleaning, adjustingand replacing the mode switch. Detailed checks werethen made in the syscon circuit. As a result I discoveredthat transistor 06008 had an intermittent base -emitteropen -circuit. 06008 is driven by 06009: they areemployed by IC6001 to pulse scan its mode sensor input.

H.B.

Salora SV6600/Sanyo VHR1300

The problem with this machine was intermittent tuningdrift. As all channels appeared to be affected we checkedthe 33V supply, which was slightly high. We also noticedthat the panel (the timer/tuning panel) in the vicinity ofthe 33V regulator IC6206 was brown and showed signs ofoverheating. The supply to this 33V regulator chip isprovided by a constant -current regulator arrangementon the power supply/system control panel. Note thatthere are two different circuit diagrams in the manual -this was the more complex one.

The voltages around the regulator transistor 05004(2SA984) didn't agree with those in the manual, but thetransistor, along with diode D5003 and zener diodeD5004, were all o.k. Resistor checks were then carriedout. The emitter resistor R5010, which is used to sensethe current, was found to be only 2700 instead of 56011 -the wrong value had been fitted. In addition R5015 was5600 instead of 1.8k11. Both resistors were original partsand had been in the machine for around three-fouryears. Maybe this was a one-off occurrence, or maybemore machines with these errors will start to show upsoon. I.B.

Panasonic NV430

The problem with this machine was that the optical tape -end detection wasn't working. As detection didn't occurat either end of the tape the infra -red emitter circuit wasthe most likely suspect. On these machines the infra -redLED is pulsed on and off by the system control chipIC6001 via the 2SD636 emitter -follower 06006. Meterchecks showed that the LED, transistor and two assorted

resistors all read correctly. But no light reached the endsensors. Scope checks then revealed that while 5V peak -to -peak pulses were arriving at the base of 06006 thepulses at its emitter were of only 1V amplitude.Replacing this transistor restored normal operation, butit read o.k. on the meter's diode check when tested outof circuit. I.B.

Philips VR6760

There was no E -E picture and no playback picture, dueto the absence of any 10V supplies on the signal board(P306). Tracing back led us to an open -circuit transistor(7607) on the main board (P606). Removing the panel toreplace this transistor is no easy task. It was even morefrustrating when the replacement gave an impression ofVesuvius ten seconds after switching on. Further checksrevealed that there was a short to chassis on the signalspanel. The +10c supply stabiliser transistor on this panelwas found to be burnt up and short-circuit, but the shortwas still present after it was removed. It was found to bein C2329, and when this and the two transistors werereplaced normal operation was restored. A.D.

Ferguson 3V44

This machine had no clock display though the functiondisplay worked correctly. Scope checks on the timer/display board showed that there was no output fromIC401. The supply to this chip was correct, but there wasno clock signal either at this chip or where it enters theboard at pin 6 of CN1. The missing signal was tracedback to broken print on the power supply module.Repairing this print restored the display. A.D.

Marantz MV762iPhilips VR6860

The complaint with this machine was "lines on thepicture and a whistling noise when not in use". A trialwith the test tape showed that the "lines on picture"were due to the capstan motor running at full speed.Checks around the MAB8420 servo chip IC7091 re-vealed that it was not supplying pulses to the D -Aconverter chip. A new MAB8420 put matters right. A.D.

Hitachi VT -M622

This brand new stock machine came from the shop withthe complaint of poor stills in the SP mode. This is notactually a fault with these machines, but it does catch theunwary. On this model preference is given to the LPmode. Thus functions such as picture search and still areof poorer quality in the SP than in the LP mode. A.D.

Panasonic NV-MC10/NV-MC6

This fault occurred on an NV-MC10 but could equallywell be experienced with the NV-MC6. The customer'scomplaint was that the speed seemed a bit fast. Thecapstan was rotating at maximum speed, which meantthat the reels were also running at maximum speed. Theoutput chip is mounted on the back side of themechanism, and the servo is on the main PCB, sand-wiched across the back. All in all it's impossible to faultfind in this area without a set of extension leads. Wefound that there was no feedback from the capstanmotor. A new motor (VEM0284) put matters right. N.B.


LettersPOLARISERS FOR TVRO SYSTEMS

Most test reports now seem to mention the use of amagnetic polariser as an effective component in anysatellite TVRO system - in one trade publication anNEC spokesman was recently quoted as saying that "ifyou find a so-called polariser with moving parts, havenothing to do with it", and went on to condemn thecross -polar discrimination with Marconi LNBs, pointingout that the most effective solution is to use a magneticpolariser. Such advice is not always helpful to those inthe front line, who find few such clear-cut answers totechnical difficulties.

Yes, magnetic polarisers are a useful addition to theTVRO system buyers' shopping list, with their advanta-ges of low insertion loss, no moving parts, fast polaritychange etc. But we must also be aware of theirweaknesses. The first problem is fundamental to theoperation of such a device: for a given magnetisation ofthe ferrite core in the polariser, it will twist thepolarisation of a plane incoming wave by an amount thatvaries with frequency. This leads to the need to be ableto adjust the skew and store this for each channel. Someinstallers will claim that the results obtained without thisfacility are adequate when receiving Astra's channels -so far. Thanks to Astra's reluctance to fire up alltransponders, an installer needs to adjust the skew forbest cross -polar rejection only at the mid to high end ofthe frequency band in use (Screensport on ch. 1 has todate no adjacent signal with vertical polarity to causecross -polar interference). Unfortunately the problembecomes worse as the required frequency range in-creases, creating difficulty with reception of future Astrasatellites.

The second problem is more obvious - the installercannot easily see the polariser's "viewpoint". When amechanical polariser is fitted he needs to look only at theprobe position to know the skew setting. When aMarconi LNB is fitted the case position indicates theskew setting, although this must be done manually. Themagnetic polariser has no indication of the skew settingother than from the signal level obtained. This makes asignal level measuring facility an absolute necessity.Simple peak -level units aren't suitable as they simplyaverage the total power level of the channels received,when it's necessary to examine individual channel levels.This makes "by the book" installation a tedious job,requiring adjustment for optimum skew on each chan-nel.

A Marconi LNB (or any LNB with two selectablereceive probes 90° apart) will not require such elaboratealignment. It will require adjustment for the oppositepolarity. Both these types of polariser are able toprovide polarity selection with very low insertion lossand with cross -polar isolation better than that of amagnetic device. The mechanical polariser has the extrafacility of skew adjustment from the receiver. Neitherdevice will alter skew with frequency across the Kuband.

So next time you're asked to weigh up a TVRO systemwith a magnetic polariser, check that the receiver storesskew on each channel and be prepared for a return visit

to the system when Astra fires up the remainingtransponders.Gordon McCrea,Kesh Electrics (Satellite Systems) Ltd.,Kesh, Co. Fermanagh, N. Ireland.

PHILIPS REPLY

In response to Martin Blake's letter (July) I would makethe following observations which may help to enlightenMartin and your readers.

Philips, being at the forefront of electronic communi-cations and leaders in the field of interactive communica-tions, have translated this expertise into the area ofspares distribution to provide material support for theUK's consumer electronics service industry. With thedevelopment of our Multi -option Interactive EnquirySystem (MOVIES) we offer the trade the ability to gainaccess to our mainframe computer at Croydon in orderto obtain up-to-date information on spares, technicaladvice and product availability. By using MOVIES thedealer can take advantage of the following facilities:

(1) Ordering parts. (a) Identify and code parts required.(b) Check on price and availability. (c) Place orders.(d) Check the progress of an order.

(2) Technical Information. (a) There is access to some1,200 pages of current technical advice and servicetips. (b) Technical assistance can be obtained fromour Technical Support Engineer at Croydon via themessaging facility or contact made with TechnicalLiaison Officers throughout the UK. (c) The usercan communicate with other MOVIES users in theUK via the messaging/mailbox facility.

All this is available for what is in most cases the cost of alocal telephone call.

We at present have over 1,000 registered UK users(including our five major distributors) who regularly useMOVIES. In May, 67 per cent of all orders transacted atour Waddon warehouse were placed via MOVIES. Ourcurrent stock availability is 98.8 per cent of all codesrequired, and 93 per cent of all order items are clearedfrom stock. Orders placed before 18.45 hours by thetrade via our MOVIES system are picked, packed andready for despatch via mail or express carrier by 10o'clock on the following working day (subject of courseto stock availability).

Need I say more Martin? Join the MOVIES club orget closer to your Philips Appointed Distributor who willbe delighted to help you.Max Hofmann, Major A/C Manager,Philips Consumer Electronics,Consumer Electronics Service,Waddon, Croydon CR9 4DR.

PHILIPS SPARES FROM WILLOW VALE

I read with interest Martin Blake's letter (July) regardingthe distribution of Philips spares through wholesalers.According to Philips, in May Willow Vale supplied 48per cent of all the non -account spares used in the UK.This comprised nearly 8,000 different parts with a supplyratio from our stock of 94.59 per cent. This means thathalf the trade ordered Philips parts from Willow Valeand received 95 per cent of their total order the next day.


I doubt whether any other manufacturer other thanSharp and Grundig (for whom we are the sole partsdistributor) can boast such an impressive record.

Martin says he cannot understand our invoices. But aslong as he gets his parts, why worry? Our rep will explainthe paperwork and our technical people will help himorder. Martin, my message is: Open an account - yourproblems should then be solved.P.J. Bartlett, Managing Director,Willow Vale Electronics Ltd.,Reading, Berks RG2 OLU.

THE PVC LEAD PROBLEM

M. Bennett (Letters, August) asks why a PVC leadshould attack plastic. PVC (poly vinyl chloride), whetherused in mains leads or plastic macs, is somewhatdifferent from other common plastics. Essentially it's astiff or rigid polymer which is made softer by theaddition of a colourless synthetic oil or "plasticiser". Insome cases this plasticiser has an unfortunate tendencyto migrate or leave its parent PVC compound under theaction of heat and/or pressure. This gives rise to theobserved effect, i.e. that by contact the plasticiser canmigrate and soften silver paint etc. Some PVC/plasticisercombinations are worse than others in this respect.Cheap, poor quality compounds will no doubt be theworst offenders. In hopefully rare cases the plasticisermay contain other materials such as dissolved colourmatter which could produce a clearly visible stain.

Although this problem doesn't always arise, it wouldbe prudent to regard all leads as suspect and avoidconditions that would assist the process. In other words,let the leads dangle!J.W. Turner, Grad. P.I.,Morecambe, Lancs.

Editorial comment: We have received several letters onthis subject and wish to thank all those who took thetrouble to write. A further letter from Andy Emmersonwill be published next month - he warns of the danger ofusing polystyrene roof insulation with PVC -coveredcables.

AMSTRAD'S SATELLITE TV RECEIVER

Ian Martin's article on the Amstrad satellite TV receiversystem (July) was very interesting. I too live in SouthWales and experienced all the same problems as Ian, evendown to the LNB packing up after the first week. UnlikeIan however I was quickly given a replacement by thelocal Currys branch despite my SRX200 kit being self -installed. I agree that the Amstrad system is excellent: thetext, stereo sound etc. cannot be faulted. There's only onesmall thing that I wonder about. As Ian says, it's probablethat the decoder will fit snugly in the top of the receiver.The only problem is that the receiver already runs prettyhot, so I don't know how hot the decoder will get!Chris Plaice,Swansea, Glamorgan.

THANKS!I am writing to thank you for the excellent adviceprovided by your Advisory Service. This has helped meon several occasions. Here are a couple of examples.

The problem with a Philips set fitted with the Gllchassis was inconsistent line sync. Following your advice

to check out decoupling capacitors I scoped the syncsignal and found a ring which was causing the mis-syncunder certain signal conditions. The cause of thisproblem was the LT1 supply reservoir capacitor C3150(150µF) on the line output panel.

The problem with a Ferguson 3V35 VCR was inter-mittent noise on playback of its own recordings. Yousuggested worn heads, so I replaced them with aneconomy grade drum at £18. The results were superb!No realignment was necessary and the new headsovercame poor tracking with prerecorded tapes, a faultthat had been present almost from new. No guidetweaking was required.T.G. Borg,Weaverham, Cheshire.

EQUIPMENT IN SCHOOLS

I work for a local authority in the repair and mainte-nance of audio-visual and reprographic equipment. In1990 this work will go out to tender at many of theschools within this county and others. Thus in futureschools will be able to call in local engineers to carry outrepairs and servicing. I would like to point out howeverthat there are some safety practices to take into account,as follows:

(1) TV sets should be in a cabinet or securely fastened.

(2) The security of all fastenings should be checked atregular intervals. These sets are prone to workingloose from their mounting screws and if not checkedthe set can slide off its trolley. For this reason asticker should be attached to one end of the TV setmarked "push from this end only".

(3) It's recommended that the insulation of the TVsets, VCRs and audio equipment is flash tested atleast once a year. It's the school's responsibility toensure that all equipment is tested.

(4) Fuses, plugs etc. should also be checked every year.

(5) Extension cables should not be used.

J. Fenton,Hull, North Humberside.

HELP WANTED

Can anyone help me obtain a TBA500 chip which Iunderstand is no longer being made? Alternatively cananyone let me know of any chassis that used it so that Ican perhaps salvage one?Harvey Benson, 5111 Rehov Hatzanhanim,Entrance B, Magdiel, Hod Hasharon, Israel.

Can anyone supply or suggest an alternative for thehard -to -get LM373N chip?M. Stevenson, 124 Green Lane,Eastwood, Essex SS9 SQJ.

Can anyone assist with the repair of a Rank T510Bultrasonic remote control unit, used with the BushModel AC6333? All that's wrong is that there's a missingtop to a coil.David Jackson, Graphic Studio Ltd.,74 Lower Camden Street, Dublin 2, Ireland.


Servicing Salora Colour ReceiversPart 2: The G and H Chassis

This month we'll start on the G and H chassis - theproduction of these very similar chassis overlapped.Both chassis use the Salora Ipsalo (integrated powersupply and line output) circuit, which was devised as ameans of reducing the power consumption. It uses acommon transformer, referred to as the combi transfor-mer, for the chopper and line output stages.

The situation is complicated by the fact that twodifferent Ipsalo circuits were used in the G and Hchassis. G sets up to serial number 300,000 and H sets upto serial number 200,000 use the Ipsalo-1 circuit whilelater sets use the Ipsalo-2 circuit. The two circuits arequite different. While Ipsalo-1 uses a thyristor as thechopper device, a second thyristor for protection andsoft -start, and a 28 -pin type LF0015 hybrid i.c. forchopper control, Ipsalo-2 uses a couple of transistors inthe chopper circuit (both as switching devices) and anLF0034A 20 -pin hybrid i.c. as the control device. Ipsalo-1 has two driver transformers for the two thyristors whileIpsalo-2 has a single driver transformer with twosecondary windings for the two chopper transistors - theprimary winding on the combi transformer is connectedin series between these two devices. Both Ipsalo circuitsprovide mains isolation.

Ipsalo-1

Fig. 1 shows the Ipsalo-1 circuit used in the H chassis.In the following description we'll use the H chassiscircuit reference numbers with the G equivalents inbrackets.

The incoming mains supply is filtered and then fed tothe bridge rectifier DB708-711 (DB1-4) whose output isfed via the surge limiter RB711 to the anode of the firstthyristor THB700 (THB2). The mains input is also fed totransformer MB700 (MM1) which produces an output ofapproximately 24V a.c. This is rectified by DB700-3(DB40-3) and fed via DB704 (DB44)/RB702 (RB127) tothe start supply regulator circuit TB700/TB701/DB706(TB15/TB16/DB14) which produces an output of about12V. With the H chassis there's also a feed via DB704 tothe MC78M18 18V regulator ICB700. On the G chassis a32V feed from the cathode of DB44 is taken to thebattery kit socket and remote control PCB if fitted.

During start-up the regulated start supply is used topower the Ipsalo chip HB1, the TBA2593 sync/linegenerator chip ICB501 (ICB2) and the line driver stage.

Overload Protection and Soft StartThe first thyristor THB700 (THB2), type TIC106M, is

used as an electronic fuse in case of an overload and alsoto provide a slow start-up. Both these functions arecontrolled by the hybrid chip. For slow -start control azero cross -point switch in the chip is fed via pin 27 withan integrated a.c. waveform from the secondary windingon MB700 (MM1). This circuit produces a sawtoothwaveform which is used as one input to a controlamplifier circuit, the other input being a clipped lineflyback pulse from the combi transformer. This controlamplifier's output is fed to an integrated driver transistor

Nick Beer and Ian Bowden

whose output leaves the chip at pin 4, going to the drivertransformer MB701 (MB4) which controls the gate ofTHB700 (THB2). The soft -start action is to switchTHB700 (THB2) on during only one half of the mainsinput, so that the main reservoir capacitor CB721 (halfCB5) receives only a half -wave rectified input. Once theset has started up THB700 (THB2) is driven on both halfcycles of the mains input.

The 12V supply at pin 22 of the hybrid chip, the 20Vsupply at pin 6, the 28V supply at pin 5 and informationon the operation of the chopper, fed in at pin 20, aresensed by the overload protection circuit. Should anoverload occur the drive to THB700 (THB2) is removed,leaving this thyristor cut off. Thus the set closes down,after which it will try to start up again - with the laterIpsalo-2 circuit the set remains shut down.

Chopper ActionThe second thyristor THB701 (THB1), type 18022, is

used as the chopper device, controlling the amount ofenergy transferred from the mains supply to the combitransformer and thus all the secondary output voltages.Note that this device incorporates a reverse current(efficiency) diode. Line flyback pulses are fed back topin 16 of the hybrid chip and are used to generate asawtooth waveform which is applied to one input of acontrol amplifier. The other input is fed in at pin 18 andprovides a reference voltage, developed across CB718(CB15) at pin 10. This reference is preset by RTB700(RTB1) which thus controls the levels of the outputvoltages provided by the Ipsalo circuit. This controlamplifier acts as a pulse width modulator: each time thesawtooth input falls below the reference level its outputchanges state. This cuts off the integrated driver transis-tor whose output, at pin 9, drops. A drive pulse is thencoupled via MB702 (MB5) and CB724 (CB20) to thegate of THB701 (THB1), switching it on. When the lineflyback occurs a back-e.m.f. is generated by the combitransformer's primary winding, the reverse voltageacross it switching THB701 (THB1) off. Current flowsthrough the integral efficiency diode, putting energyback into the smoothing capacitor CB722 (part CB5). Asthe thyristor's switch -off point is fixed, it's the switch onpoint - or rather the length of time the thyristor conducts- that governs the amount of energy supplied to the set.

This switch -on point varies to provide regulation ofthe secondary supplies. If the amplitude of the flybackpulse or the rectified mains input increases, the refer-ence voltage at pin 10 of the hybrid chip will fall (there'san inverting amplifier between pins 18 and 10). Thedriver transistor will thus switch off later and thethyristor will not remain in conduction for so long,resulting in less energy being supplied. The reversehappens when there's a drop in the mains input or theamplitude of the line flyback pulse.

Standby SystemThe transformer fed start-up supply is used when the

set is in the standby mode. In the H chassis the 18V


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Fig. 1: The Ipsalo-1 circuit as used 'n the H chassis. Note that the line output transistor's supply is generated across capacitorCB513 by efficiency diode action.

output from ICB700 powers the remote control circuitryin standby, while in the G chassis the 32V output fromDB40-3 is fed to the remote control panel where asimilar i.c. provides regulation.

When a standby command is received, pin 19 of theSAA1251 remote control decoder chip ICC101 goes low,switching on transistor TC102. This links the 18V lineback to the power supply where it passes via RB724(RB125) to pin 20 of the hybrid chip. This shuts off bothdriver transistors in the chip, so that neither thyristor inthe chopper circuit receives drive pulses. The 18V supplyis also fed via DB707 (DB37) and RB707 (RB124) to thestart-up supply regulator circuit where TB701 (TB16)switches off. As a result TB700 (TB15) is no longerconductive, removing the start-up supply to the Ipsalochip, the line oscillator and the line driver stage. When

the set is asked to come on from standby it's simply amatter of switching off TC102 so that the 18V feed to thepower supply is removed, after which the set starts up inthe usual manner.

Tuning ArrangementsEarlier versions of the G and H chassis used basically

the same sweep tune and control circuit. The differenceis that in the H chassis the SAA1251 remote controldecoder chip is on the microcomputer panel whereas theG chassis has to be fitted with a small extra PCB toperform this function. The reference numbers in thefollowing description apply to both the H and G chassis.

The later eight -channel version of the G chassis didnot have this search tuning. Instead it uses preset


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potentiometers switched by two i.c.s (ICCP1 andICCP2) on the lower front panel. These chips are fedwith channel number data from the 74C922 channelnumber keypad encoder chip ICS1 on the upper frontpanel. This arrangement has proved to be far morereliable and we feel requires no further explanation.

In later H chassis sets with the Ipsalo-2 circuit thesearch tuning circuit is simplified by the use of an M193Ccombined microcomputer, memory and varicap supplydriver chip. There are two exceptions, the 1H7 which hasthe same system as later G chassis sets and the 1H3 and1H5 which have mechanical switch banks to select thechannel and the appropriate tuning potentiometer.These circuits are more reliable (apart from switchcontacts on the 1H3 and 1H5) than the search tuningsystem and do not call for any further explanation.

Search Tuning Operation

When it comes to faults in the G chassis the searchtuning circuit is, after the Ipsalo circuit, the maintrouble -spot. As you will see from the fault list nextmonth, the number of faults is comparable to the powersupply. When fault finding in this area it's helpful toknow how the system operates, so that faults can betracked down by making test measurements rather than

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Fig. 3: Tuning up/down waveforms. (a) A.F.C. demodulatoroutput, (b) up pulse, (c) down pulse.

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by just changing the i.c.s one by one and keeping yourfingers crossed that you will have cleared the fault.

The design is based around the AY -3-8203 microcom-puter ICC7 whose function, in conjunction with the frontcontrol and display panel, is to provide tuning search andcontrol of memory and channel switching. Fig. 2 shows ablock diagram of the system.

Tuning is initiated by the start button, operation ofwhich sets ICC7 in the search mode. A pulse train atapproximately 3.91cHz then emerges from pin 35 - thiswill form the varicap supply voltage. At the same timethe fine-tune voltage at pin 33 is centred to give an equal"throw" up and down. Also pin 31 goes low to mute thesound, lower the contrast level and, with the G chassis,switch on the tuning band LEDs.

The pulses from pin 35 vary in width to set the finald.c. level fed to the varicap tuner. They are adjusted toan amplitude of 5.2V by RC58/DC15fTC8/RC54 andthen pass to a filter circuit consisting of RC9/10/11/13/14/15 and CC5-8 which, in conjunction with an operationalamplifier in ICC1 (input pins 8 and 9), produces at pin 7the d.c. required for the tuner. As the search continues,the a.f.c. demodulator ICCC1 (TBA120A), which ismounted in a screening can on the tuner/i.f. mother-board, gives a pulse output signal - see Fig. 3(a) - whichis fed to the control PCB, entering ICC1 at pin 11. Whenthe swing of this signal is greater than ±50mV incomparison with an internal reference voltage of 5.2V, acomparator circuit within the chip produces two outputpulses that leave at pins 15 and 16 (the down and upsignals respectively).

The down signal is fed directly to the 4011 chip ICC9,providing one input to a nand gate. The up pulses frompin 16 are delayed by CC35/RC66/DC18 before beingfed into ICC9 as the second input to the gate. When theup and down signals are both high, the gate's output goeslow. This change is coupled via RC71 and CC37 to thelevel -shift transistor TC12 which turns off momentarily,providing a high pulse at pin 29 of ICC7. This is the stopinput. The search then pauses. After a delay of approxi-mately 256msec, set by an internal monostable, thevalidate input at pin 28 is checked. If it's low, the searchwill continue: if it's high this indicates that a channel hasbeen found. It can go high only when the video sync fedto pin 12 of ICC1 and the flyback pulses fed to pin 13coincide, making the output at pin 20 go high. Thisoutput is fed via ICC9 and the level -shift transistor TC11to pin 28 of ICC7. The search will stop and pin 31 will gohigh, removing the mute and restoring the contrast level.The station can now be stored in the ER1400 tuningmemory chip ICC8 by pressing the store button.

ICC7's clock is set at 2MHz by RTC3 and CC26. Thisis divided by 128 to provide the 15.6251cHz memoryclock. The search speed is set by the tuning oscillatorwhose frequency is set at approximately 1.2kHz by RC59and CC27. ICS2 (U143M) on the front panel drives theLED channel number display, under the control of thefour -bit parallel data lines from pins 22, 23, 24 and 25 ofICC7. Channel selection is performed by the MM74C922chip ICS1 which feeds data directly on to the same databus. The remote control system uses an SAA1250encoder in the handset and an SAA1251 decoder in theremote control receiver (ICC101 in the H chassis). Thischip provides the same data lines with outputs at pins 8,9, 10 and 11, via ICC103.

Next month we'll take a look at the Ipsalo-2 circuitthen provide a fault guide for the G and H chassis.


An Inexpensive Orthomode Transducer

An orthomode transducer is used at the feedpoint of adish to split the signal two ways. These devices areusually sold at about £99 plus VAT. One type known asIRTE is made in Italy and comes with two adaptor rings.They can be used in various ways. For example youcould use one to feed two LNBs from a single feedhorn,one for vertical and the other for horizontal polarisation.This could be done with a fixed dish for reception from asingle satellite - you can't do it with a polar -mount dishas there's no skew control. Alternatively you could usethe orthomode transducer to feed an 11GHz and a12.7GHz LNB with a polariser at the input - the12.7GHz LNB for use with Telecom -1. There's also thepossibility of covering three bands by using a dual -bandLNB at one port, giving low- and mid -band reception viaone port and the high band via the other.

The present article came about to meet the viewingrequirements of a home with several young people. I'vethree sons and their friends are often here, giving rise tofrequent squabbles over programme selection. Thesolution - multiple receivers. But we didn't want moredishes outside. We needed another LNB anyway for theAstra signals. A fairly noisy one, 2dB, is quite adequatefor use with our 90cm dish. I bought a used one for £33,which didn't eat too hard into the family budget.

The price of an orthomode transducer was the hardestthing. How much?!! Surely not for a piece of pipe withthree flanges?! So I went out into the garage, in thoughtmode, dived into the central heating bits box and had afiddle with some 22mm pipe. A visit to the localplumbing supplier produced a Yorkshire tee and a sweptelbow. The total cost of these, with VAT, came to 99p.

ConstructionThe next step was to cut two 50mm lengths of 22mm

pipe, slit them lengthways and open them out flat. Theseform the LNB connecting flanges - see Fig. 1. Anothertwo pieces were cut to 35mm and deburred. The flangeswere cleaned with a piece of emery paper then solderedon to the pieces of pipe using ordinary 60:40 solder, with1mm of pipe sticking through. If you haven't got a blowtorch, a gas cooker will provide sufficient heat.

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Fig. 1: Constructional details of the orthomode transducer,also a scalar feedhorn.

Paul Matthews

The inside edge of the swept elbow, which fits into thetee, was chamfered to provide a smooth entry into thesocket. These two pieces were soldered together first,making sure that the output via the elbow was in linewith the tee's through port output.

Similar treatment was applied to the inside edges ofthe flange pipes, i.e. they were chamfered to ease entryinto the sockets. Mole grips were clamped to the flangesto act as heatsinks while the pipes were being soldered tothe main body.

Scalar FeedhomAfter chamfering the edges to fit, a spare scalar

feedhorn was fitted to the front of the tee, using two-partepoxy. If you are stuck for a feedhorn one can be madeusing a 35 X 22mm piece of pipe with a 55mm discsoldered 14mm from the front. Solder on to the discthree 10mm wide strips of copper made from slit pipe,fitted at 5.5nun centres, the longest strip around 175mm,the next 145mm and the smallest 105mm.

Dish SizeBecause of the shadowing effect of the orthomode

transducer and the extra LNB the dish should be of 85cmdiameter minimum. The arrangement is mounted withthe extra LNB upwards so that any water that gets pastthe 0 rings fitted on the 1mm projection between theflange and the LNB runs down and out through the holesof the spider trap cap.

SpidersAn anti -spider cap is worthwhile. Spiders seem to find

this environment all too well suited to catching theirlunch but play havoc with the microwaves! The Saturdaymorning chore is to brush spider's webs and things out ofthe feedhorn. I once had complete signal fade-outovernight and thought the LNB had died. Eventually Idiscovered that a spider had made a nest around theLNB's pick-up probe.

Transition RingsThe LNB flanges have eight holes on 45° centres. Thus

if you have some spare quarter -wave circular -to -rectangular transition rings or need to fit these tominimise loss they can be fitted to retain the vertical andhorizontal positioning. Their function is to match thesignal to the polarity of the LNB. They consist of a45mm diameter block of aluminium 12mm thick, with anoval hole 20 x 12mm and chamfering to a circle at theinput side. I fitted some spare ones to the assembly andnoticed only a very slight improvement.

MountingThe whole assembly was mounted at the dish feed -

point using a three-inch PVC pipe clip that grippedaround the bottom LNB, with the tripod arms in theform of a Y. The top LNB is used for vertical and thebottom one for horizontal polarisation.


Long-distanceTelevision

Roger Bunney

One correspondent wrote "there's something aboutmost days - if you've the time to look for it". That sumsup the conditions during June. Sporadic E signals werepresent on most days, though at times of short duration.On other days the openings were intense, with hours ofreception and the m.u.f. reaching into Band III. Theprolonged hot weather also produced good troposphericreception. First the UK SpE log:

3/6/89 RAI (Italy) chs. IA, B; TVE (Spain) E2, 3, 4;TDFC+ (France Canal Plus) L2; TSS (USSR) R1, 2;TVP (Poland) Rl.

4/6/89 TSS R1, 2, 3; C+ L2; TVE E2, 3, 4; EPT(Greece) E3; RAI IA, B; Ercalano (Telemar-ket) E2 and TVA IB - Italian private stations.

5/6/89 RAI IA, B; Teleroland E2 (Italian private); ARD(W. Germany) E2; CST (Czechoslovakia) R1, 2; TSSR2; EPT E3;TVE E2, 3, 4; TVE-2 E2; RTP E3.

6/6/89 TVE E2, 3, 4; RTP E3; RAI IA, B.7/6/89 RAI IA; TVA IA; Telemarket E2; TVE E2, 3; TSS

R1, 2; PTT (Switzerland) E3; smeary E2 video fromthe south at 1820, suspect ZTV (Zimbabwe).

8/6/89 NRK (Norway) E2; TVP R1, 2; CST R1, 2; ORF(Austria) E3, 4; JRT (Yugoslavia) E3, 4; C+ L2;RAI IA, B; TVE E3; RTP E3.

9/6/89 TVE E2; JRT E2; ARD E2; RTP E2.10/6/89 An intensive day: JRT E3, 4; RAI IA, B; Canal -3

(Italian private) IA; Telemarket E2; C+ L2, 3, 4;TVE E2, 3, 4; RTP E3; TSS R1; MTV (Hungary) R1,2; TVP R1, 2; CST R1, 2; RTSH (Albania) IC; JTV(Jordan) E3. An unidentified Arab station was loggedon ch. E5. Low-level aurora activity from 1700.

11/6/89 WE E2, 3, 4; TVE-2 E2; RTP E2, 3; SVT (Sweden)E2, 3, 4; TSS R1, 2; NRK E2; YLE (Finland) E4;PTT E2, 3; C+ U; RAI IA; Tele Uno IA; JTV E3(at 1940); ARD E4. At 1400 Simon Hamer logged anexcellent Band III SpE opening with RTT (Tunisia)ES, 6; Libya E6; RTA (Algeria) E5, 6, 7; RTM(Morocco) M4, 5, 7. All these signals were positivelyidentified from test patterns, captions and logos.

12/6/89 RAI IA, B; Telemarket E2;TVE E2, 3, 4; RTP E2;ARD E2; PTT E2; TVP R1, 2, 3; CST R1, 2; TVRR2; TSS R1, 2, 3, 4, 5; SVT E2, 4; DR (Denmark)E3; NRK E2, 3, 4; YLE E4; RUV (Iceland) E3, 4;JRT E3, 4, 7; JTV E3 (at 1925). An unidentified

- - -----Left: Test pattern B, from a Cathodeon publication - see Vintage test cards. Centre: The PM5544 test pattern as used by RTM(Morocco), received by Ian Waller in Lincoln. Right: The standard North American 525 -line test pattern displayed on a 625 -line receiver, showing the reduced height when the field hold control is adjusted to lock the picture. Signal received by IanWaller via the Gorizont 14°W satellite (global beam, C band).

system M signal on ch. A2 was logged during theevening.

13/6/89 TVE E2, 3, 4; RTP E2, 3; TVE-2 E2; RAI IA, B;ARD E2, 3, 4; SVT E2, 3, 4; NRK E2, 3, 4;YLE E3;JRT E3, 4. A coloured news announcer was receivedon ch. E3 from due south, possibly Sokoto, Nigeria.

14/6/89 RTP E3,TVE E2, 3, 4; TVE-2 E2; C+ L2; RAI IA,B; Videolina IA; TVA IA; CST R1; TVP R1, 2;NRK E2; SVT E2, 3, 4; TSS R1, 2.

15/6/89 RAI IA; Telemarket E2; RTSH IC; MTV R1, 2;TVR R2; RTP E2, 3; WE E2, 3; ARD E2; TVP R1;CST R2; TSS R1, 2, 3; NRK E2, 3; SVT E2, 3, 4.

16/6/89 WE E2, 3, 4; TVE-2 E2; RTP E2, 3; RAI IA, B;ORF E2a, 4; CST R2; MTV R1, 2; TVR R2, 3;RTSH IC; EPT E3; DR E3, 4; JRT E3, 4; TVP R1, 2;TSS R1, 2, 3, 4, 5; YLE E3; NRK E2, 3, 4; SVT E2,3, 4; RTM (Morocco) M4.

17/6/89 TSS R1, 2, 3, 4; TVP R1, 2; NRK E2, 3, 4; SVT E2,3, 4; YLE E3, 4; ARD E2, 3, 4; ORF E2a, E4; RAIIA, B; Telemarket E2; Tele Uno E3; RTSH IC; +PTT E3, 4; C+ L2, 3, 4; DR E3; TVE E2, 3, 4; RTPE3; JRT E3, 4.

18/6/89 TVE E2, 3, 4; RAI IA, B; TSS R1; AFN ch.E3reported by Bill Cotterill - likely to have been ch. A2AFRTS Crete (American Forces Radio and TVService).

19/6/89 RAI IA, B; TVA IA; Telemarket E2; WE E2, 3, 4,5, 6, 7; RTP E2, 3; DR E3; MTV R1; RTM MoroccoM6, 7 (Roger Fussell).

20/6/89 WE E2, 3, 4; RTP E2; RAI IA; TVE-2 E2.21/6/89 SVT E2, 3, 4; NRK E2, 3; YLE E3, 4; TSS R1, 2;

CST R2; WE E2, 3; RAI IA, B.22/6/89 WE E2, 3, 4; RTP E2, 3; C+ L2; NRK E2; TSS Rl.23/6/89 RAI IA.24/6/89 WE E2, 3, 4; C+ L3; ARD E3.25/6/89 SVT E2; RUV E3, 4; NRK E4; ARD E2; TVE E2, 3,

4; WE -E2; RTP E3; Arabic ch. E3 signal from 1845-1915 possibly Jordan or Iran.

26/6/89 YLE E2; TSS R1, 2; CST R1, 2; JRT E3, 4; RAI IA;Telemarket E2; ORF E2a; WE E2, 3.

27/6/89 RAI IA; Telemarket E2; JRT E3; WE E2, 3, 4; RTPE3; RUV E3, 4; NRK E2, 3, 4; SVT E2; TSS R1, 2.

28/6/89 PTT E3; EPT E3; NRK E2, 3; TSS R1, 2.29/6/89 +PTT E3.30/6/89 TVP R2; TSS R2.

The 11th and 17th produced the most intense SpEopenings. On the 11th radio amateurs achieved two-waycontact between the UK and Guyana at 50MHz. The17th produced a prolonged opening, with the 2m(144MHz) amateur band open for some six hours.Several TV-DXers are now monitoring Band III duringintense openings - their patience has certainly beenrewarded. The latest solar cycle forecast indicates thatthe peak will be in early 1990, with a smoothed count of


189 ± 32. We have heard that Greece is to offerexperimental amateur radio transmitting licences for the50MHz band.

There were two spells of tropospheric activity duringthe month. The first, around the 10 -11th, producedBand III/u.h.f. signals from Denmark, Norway, Sweden,W/E Germany, the Benelux countries and France, withthe ch. A80 AFRTS outlet in Holland as a bonus. Thesecond spell lasted from the 15th through to the 22nd,with a similar selection of signals but perhaps with a biastowards the south. Intense signals were received fromall networks in France, and TVE was noted in the southwest. Interference with local services became so severethat on the 19th, a Monday, the Daily Telegraph ran apage one story on the subject, including DX -TV as ahobby.Brian Renforth reports that Tyne Tees TV has been

heard on 96.6MHz, using this frequency for outsidebroadcast to studio links and upsetting the Bilsdale TEMradio service.

My thanks to the following for sending in receptionreports: Cyril Willis (King's Lynn), Ian Beckett (Buck-ingham), Simon Hamer (Powys), Peter Schubert(Rainham), Ryn Muntjewerff (Holland), Brian Ren-forth (Newcastle), Roger Fussell (Torpoint), TimAnderson (St. Leonards) and Bill Cotterill (Tipton).

News ItemsFrance: Antenne-2 and FR3 viewing figures haveslumped to a combined total of 35 per cent. Thegovernment feels that these services are poorly equippedto face the rising competition and is to appoint acombined head to improve matters. This may lead to aradical change in FR3's regional operation, with morealternative programming.Italy: J.M. Communications of Luxembourg has boughtTele Monte Carlo's Italian operation. Canal Plus has aninterest through programme exchange. Tele MonteCarlo can transmit programming throughout Italy and islikely to introduce a new pay -TV service. The otherforeign broadcaster who has a right to transmit withinItaly is the Yugoslav Tele Capodistria, which is also tobecome a general entertainment pay -TV service.Kenya: A modernisation plan for the Kenya Broadcast-ing Service has been announced and there's to be a studyon the feasibility of a second service. In addition thegovernment is expected to approve the establishment ofprivate radio and TV stations.USSR: Ted Turner's CNN news channel is soon to goRussian. To start with there will be scrambled u.h.f.transmissions from Moscow and Leningrad. The Mos-cow service will be on ch. R24, using SECAM-K.In brief: The commercial Tele Madrid service is now inoperation . . . BBC -1 and BBC -2 are to start Nicam-728stereo transmissions in the autumn of 1991 . . . Amystery 45.7MHz transmission logged by DX-ers in NewJersey, USA and the Netherlands turns out to be a soundlink for RCN Antena Dos, Bogota . . . The BelgianRTBF service is to include advertisements.

Vintage Test CardsIn the June column we published an appeal for informa-

tion on test card B. Much detailed information with a copyof "test pattern B" (see photo) has been provided byPeter Delaney of the British Amateur Television Club. Atone time Cathodeon Ltd., a subsidiary of Pye, producedmonoscope tubes that gave various patterns including B,

AERIAL TECHNIQUESMULTI -SYSTEM TV

AM/FM RADIO

DIGITAL CLOCK/ALARM

£99.00Featured above is the very latest black & white multi -system small screen televisioncombination from YOKO International. Model TVC-8M is a must for every seriousTV-DXing enthusiast and ft's also ideal for Continental travel and home use. TheYOKO 'Euro TV' features full VHF/UHF TV coverage and incorporates SYSTEM I(6MHz sound for UK/Eire/South Africa), SYSTEM B/G (5.5MHz sound for Europe.Middle East, Australasia and other parts) AND SYSTEM L FRENCH standard(6.5MHz sound). The 5.5/6MHz sound switching is automatic, the switching forFrench standard is situated on the back of the TV. This versatile model also has ahigh quality AM/FM radio section and a digital clock/alarm on the front panel. Thealarm can be selected to switch the television or radio on or off at any given time;the dock is equipped with a 24 hour nronxny alarm, which can be reset instantly tosound at the exact lime the following day. AC mains or 12 DC operation.

Aerial Techniques have now introduced an improved wide/narrow if. selectivityfunction -wide (6MHz) for strong signals -high quality reception; narrow (3MHz) forweak DX signal working and reduced adjacent channel interference, really liftsthose elusive signals our of the noise.

The YOKO TVC-8M 4.5" screen multi -system TV combination (standard model)costs just £99.00, the model with switched selectivity is £112.00, all prices areinclusive of VAT. Carnage & insurance to any UK destination is £5.50.

Our lull range of aerials, amplifiers, aerial rotators, fitters, multi -standard televisionsarid all aerial techrokivy is fully detailed in our new comprehensive 29 pageillustrated 1989 Catalogue at 75p, send for your copy today. A customer advisoryservice is also available, please telephone or write (include SAE).

All prices inclusive of VATDelivery normally 7-10 days.

ACCES., & VISA Mail andTelephone orders welcome. (24hr. service)

BARCLAYCARD

11. KENT ROAD. PARKSTONE. POOLE. DORSET BH12 2EH

Tel: 0202 738232

C, D, F and G. C was the familiar BBC test card C, Dwas a variation on the RETMA card (not the UK 405 -linetest card D). The F card was not the familiar colour cardbut a quite unusual display. G was the usual 625 -line cardused by several Continental broadcasters. B is not actuallya test pattern but a view, apparently of a Cambridgecollege building, most likely King's College. Hopefullythis at last resolves the mystery.

New EBU ListingsFrance: Nantes ch. E65, 50kW horizontal. M6 service.West Germany: Hennsted/Itzehhoe ch. E49, 100kWhorizontal. Private station.

Satellite NewsDuring the last week in June sat -zappers may have

noted the various programme inserts plus completemeetings for the Billy Graham movement, via ECS at7°E. For those with a clear take -off towards the southeast and thus able to receive Intelsat 60°E, Hong KongTV can be seen for several hours in the early afternoonon Sundays and Wednesdays carrying sport.

BBC Enterprises has signed a five-year agreementwith the European Space Agency to transmit BBCEuropean programming via a 12.0919GHz transponder(this transponder is officially allocated to Austria). Thesatellite is at 19°W and the signal power is 62dBW. Theagreement is to last until late 1994/early 1995.

The Spanish Hispasat craft will carry eight wideband72MHz transponders. Two 36MHz channels will be usedfor transatlantic traffic to the States and three DBSchannels will be available for Western Europe. An X


band military frequency will also be available. TVEhopes to use the craft for ENG and EFP links.

AsiaSat hopes to reach over two billion viewers in theFar East, with coverage of Pakistan, India, Thailand,Korea and China - in fact some 35-40 per cent of theEarth's surface. Interesting that broadcasting organisa-tions will be able to link up via this craft, bypassingIntelsat.

Radio Tele Veronique hopes to start transmissions viaECS-4 on January 1st 1990 with a new Dutch TV service.An Astra downlink is also a possibility. The mainbackers are CLT and three Dutch banks.

There are plans for a pair of satellites called Europsatto be launched in the mid -1990s, each with twelve high -power transponders. Britain, France and West Germanyare studying the plans which have been presented byEutelsat.

There is to be a two-year HD -TV test of the 1125/60standard in Canada, via Telsat, starting this autumn. Thenew HD-BMAC scrambled system will also be used.

Astra is to bring forward the launch date of its secondsatellite to October 1990. The 16 channels will use 65Winstead of the present 45W transponders, but as thebeamwidths will be greater the signal levels should bemuch the same as with Astra 1A.

The BBC is using a mobile satellite link unit for radioOBs, via ECS at 7°E, with high -quality digitally encodedstereo (system DS -1).

IBA Technical InformationThe 1989 IBA pocket guide is now available free from

the Engineering Information Department, CrawleyCourt, Winchester, Hants S021 2QA - a self-addressed, stamped foolscap envelope would be appreci-ated. As usual it contains full information on the IBAnetworks.

The May and June issues of the IBA's EngineeringBulletin contain very useful articles on TV signal levels,signal-to-noise ratios and using head amplifiers. TheJune issue article provides detailed head amplifier data,showing how the receiving system noise levels can becalculated and the improvements that can be obtained byusing head amplifiers with different noise figures, takinginto account crosstmodulation (overload) problems. Ifeel that these two bulletins are very relevant to DXwork and are worth reading.

The Yoko TVC-8M Multi -standard TVThe Yoko Model TVC-8M is currently on offer at £99

from Aerial Techniques who lent us one for evaluation asa general-purpose/DX-TV receiver. It has a 4.5in. screenwith alongside this a vertical tuning scale for v.h.f. high/low, u.h.f. and radio coverage of MW, LW and 88-108MHz. The tuning scale covers 6cm and is marked withchs. E2/3/4, all the Band III CCIR channels and a generalu.h.f. scale for every ten channels up to 60/65/69. A bankof six buttons below the screen together with an adjacentslide switch control the clock and alarm system - the 24 -hour digital clock has a bright red LED display immedi-ately below the vertical tuning scale. The lowest panel,which is angled slightly outwards, has four pushbuttons forpower on/off, v.h.f./u.h.f., Bands I/III and radio/TV. Atthe upper right-hand side of the cabinet there's an edgevolume control and below this a radio/TV tuning control.There's also a radio band slide switch and a 3.5mmheadphones socket.

At the back there's a battery compartment (the PP3battery acts as a clock back-up supply), a permanentlyattached mains lead, a systems B/G and L slide switch andan aerial input socket - this consists of a 3.5mm monoaudio jack! An adaptor is supplied for a Belling Lee typeplug. There are contrast, brightness and field hold con-trols but the line hold control is an internal preset. A 12Vinput socket is provided and at the top of the cabinetthere's an integral seven -section chromium telescopicwhip aerial that can be swivelled to any angle.

The low v.h.f. band was measured as 43.1-83-5MHz,the high v.h.f. band as 136-233MHz while the u.h.f.coverage is 452-860MHz. Scale indication is accurate.

The receiver was found to be stable, locking almostinstantly on weak through to strong signals with eitherpositive- or negative -going vision. It resolved system Isignals in addition to system B/G and can thus be used inthe UK, Western Europe, North Africa and the MiddleEast. Selectivity is good: for example there was nointerference between the local strong Rowridge ch. 24signal here and weak Crystal Palace transmissions on ch.23. Sensitivity is similarly good, typical for this type ofreceiver. The 24 -hour clock is I feel an excellent feature tohelp with logging DX signals. Radio performance issatisfactory.

The alarm facility brings an in-built buzzer or radio/TVreception into operation. There's a sleep function whichcuts off radio/TV reception after a set time.

I wasn't impressed by the aerial socket adaptor arrange-ment, particularly at u.h.f., and feel that the lack of a userline hold control is a disadvantage, though SpE, tropo-spheric and various French signals locked. With mainsoperation there was an obvious lamination buzz from thetransformer, louder when "off' and falling when on load,i.e. with TV switched on. The power section runs ratherwarm, the rear of the cabinet being too warm for myliking - repeated warming and cooling of the nearbybattery could lead to its early demise.

The v.h.f. radio section enables Band II to be checkedas the m.u.f. rises, and the extended low v.h.f. bandcoverage including chs. R3 and IC is a decided bonus. Thedesign of the 3.5mm mono plug/jack aerial input is suchthat I would recommend adding strain relief to removestress. The mono picture is sharp and the contrast rangegood.

Following comments supplied to Aerial Techniques onthe overheating problem we have been informed that thelatest models now incorporate improved ventilation.

Programming GuideAlexander Wiese, once noted for his DX -TV activi-

ties, has in recent times become involved in thepublication of several magazines aimed at the satelliteTV market. On of these, TVI (Television International),lists the monthly programmes for most of the satelliteTV services available throughout Europe, also a numberof terrestrial services. In addition feature spreads (inGerman) are given on programmes and technical detailsare provided on each satellite downlink - frequency,coding etc. This worthwhile publication is available onsubscription within Europe at 77DM from TELE-audiovision Medien GmbH, Abt. Vertrieb, Postfach801965, D-8000 Munchen 80, West Germany. Forcopyright reasons Sky Movies programmes are not listed- they are officially not supposed to be viewed outsidethe UK.


Tackling Unknown Small -screen Sets

Field engineers years ago were accustomed to walkinginto a living room to be confronted by an unknownmonster - not always the customer . . . Usually, if adead monochrome set was involved, it was a case ofreplacing a valve or counting the bottles in order to useOhm's Law to work out the value of the new droppersection required. Other main sections of the set could beidentified by the valve type numbers, familiar largecomponents or by tracing along connecting cables. Muchhas altered since then, and particularly with the smallersets it's often tricky to find the line output transistor.Nevertheless with monochrome portables much can beascertained by a cursory look. Most of them use aconventional circuit arrangement.

Video ProblemsYou may find the video output transistor on the c.r.t.

base panel, but it usually resides on the main panel and isfairly easy to locate by following the c.r.t.'s cathodelead, which is usually separated from the other connect-ing leads. Expect around 40V at its collector - the supplywill be derived from the line output stage. If thesymptoms are sound and a raster but no picture, muchcan be deduced by adjusting the contrast and brightnesscontrols, and by noting any variation in the video outputtransistor's collector voltage when the aerial plugis withdrawn with a signalcontrol sets the c.r.t. bias while the contrast controladjusts its drive. The video output transistor willnormally be driven by an emitter -follower video drivertransistor which should not be too far away. Couplingbetween the two is generally by means of a resistor/capacitor network.

AGC FaultsA.G.C. faults can give similar symptoms to a video

problem, but an over -contrasted picture may be re-solved. Attenuating the input signal may give you anotherwise normal though noisy picture. A search shouldthen reveal the a.g.c. circuit, probably in the vicinity ofthe video driver transistor. The intercarrier sound take-off is usually also in the vicinity of the video drivertransistor. So the presence of sound with no vision mayhelp to eliminate certain stages.

With line -gated a.g.c. common in solid-state sets,missing pulses from the line output stage are a possibil-ity. Common causes of this are a dry -joint on the lineoutput transformer or open -circuit print, which may bethe result of mechanical shock - a portable TV set islikely to be bumped quite heavily at some point of itslife!

Fault descriptions can be helpful. A set that wasapparently operating normally and developed the faultat switch on may have one or two semiconductor devicesthat have failed as a result of a flashover. The video anda.g.c. circuits are particularly vulnerable to this sort ofthing. A slight high -voltage click at switch on should leadto a check on whether there's a dislodged c.r.t. Aquadagearthing spring which, since the chassis of most portables

Malcolm Burrell

are isolated from the mains supply, may be anchored tothe c.r.t.'s Rimband.

Signal FaultsWith signal faults much can be discovered by using a

signal injector or signal generator to trace through thei.f. stages. Older sets, particularly those that usegermanium transistors, are prone to noisy semiconduc-tors - on occasions these ultimately become corroded.More recent receivers tend to have lots of safety resistorsthat go open -circuit for no apparent reason.

Most of the varicap tuners used in such sets haveseparate power inputs for the r.f. amplifier and mixerstages, plus an a.g.c. input and the variable tuningvoltage which is derived from a stabilised 30V line. Ifthere appears to be a tuner problem, find the tuning lineor the connection to the tuning buttons or potentio-meter. If operating the control produces a voltagevariation at the tuner check that both power inputs to thetuner are intact. On occasions the cause of no outputfrom the tuner is simply an open -circuit resistor.

Don't Blame the Chip!Don't blame a chip for faults unless you're certain.

First check its supply voltage(s) - if known, but probablyclose to the l.t. rail voltage. Even with an unknown setthe chips may be familiar types, and setmakers generallyfollow the chip manufacturer's suggested circuit. Ifnecessary check in an i c. data book or look at the circuitof a set of similar vintage that employs the same chip(s).

Check for faults in the associated components. Com-mon faults are defective zener diodes or transistors,leaky or open -circuit electrolytic capacitors and missingpulse inputs. By the way, you do understand the chip'sfunction, don't you?

O.K., so you still suspect the chip. Order a replace-ment and fit it, but beware of damaging the print or ofcareless probing that could introduce further problems.

The Power SupplyIt's not difficult (usually) to locate the mains transfor-

mer. The mains rectifier diodes are particularly vulner-able items and the semiconductor devices in the seriesregulator circuit are also prone to failure. The regulatortransistor is often bolted to the same heatsink as the lineoutput transistor - trace the circuit to avoid being likethe dentist who pulled the wrong tooth! Also suspectmains/battery switches or sockets that disconnect themains when a battery plug is inserted.

Timebase FaultsLine output stage faults generally impose a heavy load

on the power supply, with low l.t. as a symptom. E.H.T.rectifier sticks are the most common source of trouble inthis area. The diodes and electrolytic capacitors in therectifier circuits fed by the line output transformer canbecome short-circuited or leaky. A faulty line output


transistor or transformer or an open -circuit safetyresistor are other possibilities, particularly with thesound but no e.h.t. symptom. Check suspect capacitorsby replacement. Remove the line output transistor tomeasure between the junctions - it will usually readshort-circuit in situ. A beefy audio transistor can make auseful substitute for testing purposes.

If the output stage is o.k., check its drive. A scopeshould reveal quite large line pulses at the base of theoutput transistor. Tracing the circuit back will take you,often via a little driver transformer, to the drivertransistor. Look for pulses at its base then at itscollector. If they are of low amplitude the transistor maybe faulty. If they are absent you may have to trace backto the oscillator. Remember that most faults will beproved only when the suspect component is removed formeasurement. Make sure that the 1.t. feeds to thesestages are intact.

The feedback required to linearise the field scanningcan make fault finding in the field timebase difficult. Tofind the field output stage, trace back from the scan coilconnections. Safety resistors often go open -circuit, andgood substitute transistors such as the BD131, TIP31 andTIP32 can often work wonders. Where the fault liesearlier in the circuit a signal injector or careful probingcan introduce sufficient hum to trigger action on the

screen. If a chip is used in the field timebase the previousremarks apply.

Audio ProblemsDistorted sound, particularly at low volume, is usually

caused by a displaced loudspeaker cone. Whilst a wad ofcotton wool can be effective, the correct course of actionis to replace the unit. A spare 800 loudspeaker shouldnot damage any audio output circuit and can be used as asubstitute for checking. A faulty chip or leaky transistorscannot be discounted, especially where the distortion isaccompanied by low volume.

No audio could also be due to the speaker, this timegoing open -circuit, but check the supply voltages.Though many people never use it, a faulty earphone jackcould be the cause - kids have to satisfy their insatiablecuriousity by inserting objects into any unoccupiedsockets!

In ConclusionIn conclusion, remember that even with a completely

unknown set much can be ascertained by using yourbackground knowledge, observation, measurement -and a little instinct!

The Sakura SR800ER Satellite System

The British -made Sakura SR800ER is a budget -pricedsatellite 1'V system with remote control, designed forreception of the Astra channels. I obtained one last Marchfrom a High Street dealer. It's been used extensively forseveral months and is installed in the Merseyside area. Asimilar dish/LNB combination is supplied with certainAlba systems.

The DishThe neat -looking dish is made of white -painted, heavy -

gauge steel and is of the offset -focus type. All themounting brackets and hardware are plated and no sign ofcorrosion has appeared to date. This is a point worthnoting since the wall mounting brackets supplied by somemanufacturers, notably those that are painted, are alreadybeginning to show signs of corrosion. The LNB supportarms are made of white -painted steel and are bolted to thedish and LNB bracket by means of stainless steel nuts andbolts. The whole assembly is quite fiddly and can be time-consuming to assemble. Two of the arms, which aremarked L and R, are longer than the third one which isfixed to the bottom of the dish. After an initial finger -tightassembly it's advantageous to tighten the bolts a little at atime to avoid pulling the LNB off centre. Although this isnot specifically mentioned in the instructions, for optimumresults the LNB should be bolted as far back in itsmounting collar as possible.

Wall BracketUnfortunately the wall bracket is a nightmare to assem-

ble correctly and it's very easy to orientate it the wrongway so that the azimuth adjuster becomes the elevation

D.J. Stephenson, B.A., I.Eng.

adjuster and vice versa. In the vast majority of cases thiswill not be a problem, but if the dish is to be mounted atnearly right angles to the wall the azimuth adjustment willbe restricted due to the limited size of the elevationadjuster slots. To avoid the installation team taking on aLaurel and Hardy look it pays to get this right before anymounting holes are drilled. The instructions that comewith the dish are virtually incomprehensible and do notwarn adequately of this possible mistake. The two-piecewall bracket ends must be mounted horizontally and notvertically. If you find that the stay bar can be fitted onlyhorizontally the wall brackets are mounted the wrongway.

The wall bracket provides poor stability for such aheavy dish. It's best to use half -inch Rawlbolts - any lesserfixings could be a bit risky due to the closeness of thefixing points, which are spread over only one or two brickcourses. The stay bar improves the overall strength of theassembly however. To avoid cracked bricks it's importantnot to overtighten Rawlbolts.

Marconi LNBThe LNB is the well tried and tested Marconi unit

which gives good results. Its 10-96-11.7Gliz coverage isconverted to a first i.f. of 960-1,700MHz, which cor-responds to a local oscillator frequency of 10GHz. Thegain is typically 53dB with a noise figure of 1.8dB. Anindustry -standard 7511 F -type output connector is used.The solid-state polariser needs approximately 13V forvertical and 17V for horizontal polarisation. Thus a singlecoaxial cable is used, the polarisation threshold switchingvoltage sharing the same cable as the LNB's output signal.This simplifies installation significantly.


Now that these Marconi units have been up for sometime a couple of problems have become apparent. Bothlead to water getting into the unit. The first problemapplies to early units only - they can be identified by thesilver "Do not remove this cap" label on the blue cap thatcovers the mouth of the feedhorn. The cap tends to distortdue to the sun's rays being brought to a focus at certaintimes of the day. This can lead to either a gap at the edge,where water or insects can get in, or in severe cases thecap can melt, producing a large hole. Fortunately repair/prevention is easy. Replace the cap, ensuring that noinsects or moisture are trapped inside. Apparently thecause of this problem was a manufacturing error - theultra -violet stabiliser was omitted from the plastic. Laterversions of the cap have "Do not remove this cap"embossed on the face side and can be regarded as beingbeyond suspicion. Secondly, in a small number of casesthe rivets can pop or distort after a period of time. As aresult water can penetrate the seam around the peripheryof the unit. To prevent this, smear a small amount ofsealer around the seam. This of course applies to allinstallations that use this LNB.

The ReceiverThe receiver, optimised for the Marconi LNB, is

housed in a small, neat looking black plastic case. Itboasts a 20 -channel non-volatile programmable memoryand MAC compatibility. While it comes pretuned toAstra some of the newer channels that have come intooperation recently need to be tuned. The synthesis tuningsystem scans rather slowly and tuning can be tediouslyslow. A dual seven -segment display on the front panelshows the selected channel, a pair of LEDs indicating thepolarisation. Manual push-button controls provide ±tune, store, H/V polarisation for setting up, ± channel,parental lock and finally standby. The brief specificationprovided by the manufacturer is as follows:

R.F.: Input frequency range 950-1,750MHz; input noise12dB; i.f. 479.5MHz; input impedance 751/

Video: Static threshold better than 7dB; dynamic thresh-old better than 8dB; frequency deviation 13.5MHzN;output 1V at 7551; de -emphasis CCIR 405-1 (PAL); MACoutput baseband, unclamped and unde-emphasised.

Audio: Carrier 6.5MHz; bandwidth 20Hz-15kHz; de -em-phasis 50p.sec; output 0.5V r.m.s. at less than lkfl;harmonic distortion less than 1.5 per cent.

The unit and its remote control system are easy to use.The built-in parental lock consists of an audio jack plugwith a 5.6V zener diode across the terminals. This can beremoved to disable any channel that's programmed to belocked out via the front panel controls. It's a welcomefeature that's present in few receivers, and will defeat thevast majority of children.

Another facility that's perhaps useful for DIY mindedpeople is the audible satellite finder. On operating aswitch on the rear panel an audible signal can be heardthrough the TV set's speaker. The pitch increases with thesignal strength - but the volume must be turned up veryhigh to hear it from the top of the ladder! Another switchproduces a test pattern for tuning a TV set or a VCR tothe modulator's adjustable output. The LNB connection isvia an F -type socket.

The top can be lifted off after removing five screws.This reveals two boards. One is the sparsely populated

main PCB, the other one containing all the controlcircuitry including an M494B1 microcomputer chip. Ameaty transformer on the left-hand side produces outputsthat were measured at 20V and 16V. Next to this arethree regulator chips mounted on a heatsink. A 7805 anda 7812 produce 5V and 12V rails for the receiver'scircuitry. The LM317T is a programmable regulator whichis used to provide the switched 13/17V LNB/polarisationsupply. The receiver runs fairly cool provided the ventila-tion slots are not obstructed.

Four metal cans house the majority of the circuitry.These include the satellite tuner module and the u.h.f.splitter/modulator module. The other two cans containmost of the rest of the signal circuits. A TBA120U is usedfor sound processing; the only other visible chips are anLM358M dual operational amplifier and a TC4066 logicchip. The receiver appears to be easy to service - especi-ally if the canned modules are thought of as replacementitems.

DecodersA scart/peritel socket is provided at the back for

attaching decoders etc. Fair results were obtained when Itried this with a Filmnet decoder. To do so it wasnecessary to pull pin 8 low to give unde-emphasised andunclamped baseband video at pin 19. Audio is present atpins 1 and 3.

SummaryInstallation, apart from the assembly problems men-

tioned earlier with the dish, is straightforward and align-ment is easy. The picture produced is, subjectively, asgood if not better than much of the higher -priced competi-tion. Neither heavy rain nor high winds noticeably de-grade reception.

My only criticisms of this package are of the lack ofstereo audio and the poor mounting bracket assembly. Inview of the price, around £250 retail, these points are oflittle importance. The system is ideal for bridging the gapuntil the industry sorts itself out and decides on a standardtransmission system. It's unwise at the present time tospend a large amount on a "flash" system that may restrictprogramme choice or require the addition of large num-bers of decoders for various channels in the not too distantfuture. Beware of claims that current receivers arecompatible with the 'forthcoming BSB DBS transmissionssince with these there will be conditional access controlsignals that must be decoded within the receiver to makereception possible. In other words my advice is to buy/sella cheap basic system, such as this Sakura one, which isdesigned to work with the Astra signals, then wait to seehow the true DBS market develops next year. Otherwiseif you are a dealer you could be left holding stocks ofunsaleable equipment or having to explain the situation todissatisfied customers.

Dual -band, multi -satellite systems will be essential oncethe BSB transmissions and those from the medium -powerEutelsat II series craft become available - the idea of tenor more receivers and decoders stacked on top of eachother is clearly absurd. BSB's reluctance to supply chipsets to other than a handful of TV set manufacturers willonly add to its marketing problems. From listening to thecomments of many potential customers it's clearly not amatter of whether they would like to receive Sky of BSBprogrammes. They want both.


More on the Panasonic NV333

The popular Panasonic NV333 VCR has been around fora few years now. It has proved to be so reliable that manyof our customers are reluctant to part with their machines.An article by Nick Beer in the November and December1988 issues of Television provided a comprehensive servic-ing and fault guide. In this article we'll deal with theoperation of the power supply and fault tracing in thelogic circuitry used in the system control section of themachine.

The Power SupplyKnowing exactly how the power supply operates is

important for speedy servicing of a dead machine. Thepower supply circuit is straightforward - see Fig. 1 - andservicing presents few problems. Use of a modern digitalmultimeter (one with a 33/4 readout is best) and a compo-nent tester will cut service time to a minimum.

The a.c. mains input is fed to the mains transformer viafuse F1001. On rare occasions this gets tired and suddenlyfails. If you find that it's the original fuse replace it toavoid a callback later.

Bridge rectifier D1001-4 produces some 15V acrossC1002. Note that in some machines D1001-4 comprise asingle unit, type EM1Z. This 15V supply is fed to pin 1 ofthe STR1096 regulator chip IC1001. Pin 4 of this chipproduces a regulated 9V supply which is fed to the video

F10011AT

F100225AT uv

ILV

OV

V

36V

BJ/P1002

-- 1 1

2 2

3 3

4 4

5 5

2 65V

2.65

6 6

7 7

8 8

BJTOO

*10E1

t MA165 or 155133

To P7003ontunerh.f.panel

01005

01010611018

010009

D1001-4

D1010

David Bottocircuitry on the same panel and via P1003 to other parts ofthe machine. You should get a reading of 9.3V ± 0.1V atTP1002. It's been known for this voltage to increase to10V or more, causing various problems such as failure torecord the sound. If the voltage on this rail exceeds thecorrect level don't waste time making extensive checks -replace IC1001.

Pin 5 of IC1001 provides a regulated 6V supply which isdropped to about 5V by D1008.

With the VCR on you should measure 10.65V at pin 2of IC1001 with your DMM. This pin is connected viaD1011 to pin 2 of IC6002 (M53216P) on the systemcontrol board. If pin 1 of this chip, which contains six logicinverters, receives a logic high from pin 8 of theMN1405VKF microcomputer chip IC6001 pin 2 will golow, grounding the cathode of D1011 with the result thatthe voltage at pin 2 of IC1001 falls to about 0.74V, cuttingoff the regulated 9V supply. On rare occasions D1011goes open -circuit.

IC1001 is quite reliable but can nevertheless fail. Beforeyou replace it make the following quick checks. Makesure that 15V is present at pin 1. Next disconnect D1011to remove the input from the control circuitry. Finallydisconnect the loads from pins 4 and 5. If none of thesechecks restores power, replace IC1001.

D1005-6 produce 15V across C1003. This is used toprovide the motor 15V supply and also a supply for the

In

15V

C10022200

Z25V

100033300

125V

IC1001STR1096

Reg Reg9V 6V TP1001

I D148

C101

47T T47 TP1002

a778

t01011

P1003

1 Cap 18V

2 Motor 15V

3 Power on/off

4 Power off low

5k6 15k

R1006 (11,,,,1n 3.3

0.5W

C100522035V

56 00040.33

4k7

3k3

820

47

010022SD973

01001

25D636

Reg 18V

008....01

101218V

0101315516

tD1015

01014 2k7 -13V

C1007

35VT

5

6

7

8

P1005

Reg 9V

Reg SV

B 6008

D101613V 47

Fig. 1: The power supply circuit. Note that there are regulators elsewhere in the machine.

2

3

Chassisearth

To P6008,programmetimer

41...Reg 5V

Reg 9V

To 821003systemcontrol


collector of 01001. D1009-10 provide base bias for01001, which thus provides a power on/off indication atpin 3 of P1003.

The 22V output from the mains transformer is taken viathe safety resistor R1(X)6 to the cathode of D1014 and theanode D1007. D1014 develops a negative voltage acrossC1007. This is stabilised at -13V by zener diode D1016and is used by the front panel control board. D1007produces about 22V across C1005, the following regulatorcircuit providing a stabilised 18V output. If diode D1015fails the clock display doesn't light. The same thinghappens if 01002 goes open -circuit.

The filaments of the clock display are provided with a2.65V a.c. supply via pins 7/8 of BJ/P1002 and pins 3/4 ofBJ/P6(X18.

All the components in the power supply can be quicklychecked using a component tester. Remember that withtime the electrolytic capacitors, especially the smallerones, can dry out or corrode, with loss of capacitance.

The Syscon CircuitryThe logic circuitry, including the MN1405VKF

microcomputer chip IC6(X)1 , is extremely reliable. Somepuzzling faults can occur in this circuitry however.

Table 1: Logic levels at 106001

Pin Reading Function

1 OV2

3 L

4 L Stop: H goes to L5 L Pause: H6 L Fast forward/cue H7 L

8 L Power off: H9 L Record: H10 L

11 H12 P+H H13 H + P L

14 H+ P L

15 H + P L

16 H+ P L

17 H+ P L

18 H+ P L

19 H+ P L

20 H + P L

21 L Play: H22 L Play: H then L23 L Play: H then L24 L Play: H25 L Stop: H then L26 OV

27 H

28 H29 L

30 H + P + L 60Hz oscillator31 L

32 L Rewind: H33 L Fast forward: H34 L Pause: H35 L Play: H36 L Record: H37 L Pause: H38 H Pause: L39 5V40 H+ P + L 455kHz oscilato'

next month in

Ori EID11 SERVICING THE 'ANASONIC U3 CHASSISThe Panasonic U3 and U3W chassis were used in awide range of sets including the TC208/221/225/2000/2011/2024/2211/2213/2216/2221/2223/2226/2622 and TX2284. S:reen sizes are 20-26in. and thesets vary from standard to remote control andteletext versions. Nick Beer on the various faultsthat arise in these sets and fault-findingprocedures.

THE SALORA ASTRA PACKAGEContinuing our series of reviews on receiving sys-tems for the satellite TV transmissions from Astra,Ian Bowden reports on the Salora package. Beingspecifically designeJ for use with Astra the systemis capable of provicing very good performance.

SERVICING CD PLAYERSHaving in recent issues described the form of thedata stored on the lisc, in next month's issue JoeCieszynski outlines the basic operation of the de-coder and provides guidance on fault diagnosis.

UNIVERSAL FREQUENCY RESPONSE CURVECoupling and filtering networks are fundamental toe ectronics. Their behaviour determines the fre-q.rency response cf a circuit and there are basiclows that govern this. Stan Amos shows that auniversal response curve can be drawn and de-scribes how this can be used to find the effects ofparticular component combinations. H.F./L.F.attenuation/boost and phase response are allconsidered.

UNUSUAL CCTV FAULTSWhilst using the usual well-known video/TV tech-niques, closed-circuit arrangements can introduceunexpected fault conditions. Peter Graves de-s:Tibes some of the more unusual problems thatmay be encountered in practice.

PLUS ALL THE REGULAR FEATURES

ORDER YOUR COPY ON THE FORM BELOW:

TO(Name of Newsagent)

Please reserve/deliver the October issueof TELEVISION (E150), on sale September20th, and continue every month until furthernotice.NAME

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Part IC6005Output toIC6001pin 40 8

Leavedisconnected

11

R6055

C6008.1. .rC6009

/477 /17177

Check outputwith probe

Disconnectpin 11 andapply pulseroutput

Disconnect pin 8and use logicprobe to checkfor pulse output

Checkoutputwith probe

Ib)

IApplypulseroutput

IFig. 2: Checking the 455kHz oscillator. (a) Basic Circuit. (b -d)Probe and pulser checks.

PartIC6001

29

Part IC6004

Part IC6002

13 3

6

5V

C6011

D6025

rr-rrr

Fig. 3: Simplified analogue/digital(ramp circuitry).

5V

Remote control..I.A jack socket

11function selector circuit

Before you delve into the system control circuitry makesure that the problem is not a mechanical one (seeTelevision November 1988). Check that the various swit-ches such as the eject, cassette in and especially the modeswitch are clean and in good order. If the drive belts arethe original ones or are in any way suspect, fit a new set.You may then find that the machine works normally andthat you don't need to get involved with the logic controlcircuitry. A slack loading belt for example will result inthe capstan motor on signal remaining low when it shouldgo high.

The usual faults in digital/microcomputer circuitry areshort- and open -circuits and incorrect logic levels. Prob-lems can also arise due to a stopped clock oscillator or,very occasionally, an off -frequency oscillator. For fastfault location you'll need a digital multimeter, a logicprobe and a logic pulser. These two probes are also idealfor locating printed circuit breaks that might not be easyto detect visually. Further information on the use of theseprobes was given in the November 1985 and August 1987issues of Television.

After making the previously mentioned mechanicalchecks, ensure that the d.c. supply voltages at the logicchips are present and correct. Then examine the boardcarefully for cracks and poor soldered joints - especially ifsomeone else has had a go. You can then start to makechecks in the logic circuitry. Table 1 shows the logic levels

associated with the various pins of the microcomputerchip IC6001. To check these, connect the probe's positivesupply clip to pin 39 and the negative supply clip to pin 1.

Check the oscillator (pin 40) first. If the probe showsthat oscillations are not present the most likely cause ofthe trouble is IC6005 (µ,PD4069UBC), see Fig. 2. Thischip contains six inverters, two of which with theirassociated components form a 455kHz crystal oscillator.IC6002 and IC6003, both type M53216P containing sixinverters each, seem to be more reliable than IC6005.

Desolder pin 8 of IC6005 and ensure that it's clear ofthe printed track. Touching pin 8 with the logic probeshould give a pulsing signal indication. If not, check C6008and C6009 (50V ceramic, originally 100pF later 300pF)with a capacitance checker or bridge. Then measureR6055 (1Mfl). Crystal X6001 (VSX0100 or EFOA45501V)could fail but we've not had this. To check the two gates,start by desoldering pin 11 and applying the output fromyour pulser at this point: your probe should show aninverted output at pin 10. If so touch the probe on pin 8where a reinverted signal should be present. It's muchbetter to test inverter gates in this way rather thanattempting to check them in circuit.

Once oscillations have been restored at pin 40 ofIC6001 the logic circuitry, provided all else is well, shouldoperate normally. If you've a frequency counter, checkthat the oscillator frequency is 455kHz, using a 10:1isolating probe. It's been our experience however thatX6001 keeps the oscillator locked to the correctfrequency.

If a pulsating H + P + L signal is not present at pin 30of IC6001, check transistors 06013/4 (both 2SD636) anddiode D6041 (MA165).

If all or nearly all the logic levels at IC6001 are high nomatter what signals are applied to its inputs this is a sureindication that IC6001 has failed. Fortunately this seldomoccurs.

If a particular function fails to work, check that thecorrect logic levels are present at the relevant pins ofIC6001 then make sure that the logic inverters in IC6002/3/5 are working correctly - check as previously described.

Analogue/digital ramp circuitry is used to select dif-ferent functions, see Fig. 3. IC6004 (AN6912/APC339C)contains four operational amplifiers, with pin 1 feedingdata to pin 29 of the microcomputer chip. It's possible forIC6004 to fail, though the most likely causes of troublewith the function controls are dry -joints on the front paneland faulty solder joints around the function selectionbuttons.

Loading/eject problemsIf the loading or eject operations do not work properly

though the correct logic levels are present at pins 22 and23 of IC6001, suspect transistor failure. Check 0601,06025, 06030 (all type 2SD636), 06024 (2SD1273),Q6026/7 (both 2SB819) and 06028/9 (both 2SD1051).Then check D6050 and D6054 (both MA165) and the 12Vzener diode D6042 (RD12JB2). Use of a componenttester will give you a fast check on these devices.

Reel Motor DifficultiesIf the reel motor doesn't operate correctly and the logic

levels at pins 24 and 25 of IC6001 are correct, checkQ6016/7 (both 2SB793), 06018/9 (2SD973) and Q6020/1(2SD636).


BooksServicing TV and Video Equipment by Eugene Trundle,M.S.E.R.T., published by Heinemann Newnes at £25.

What more suitable book than this for readers ofTelevision? It's written by one of our best knowncontributors, Eugene Trundle, who also writes theregular Test Case feature. Perhaps you feel you know itall? Even so there are times when a difficult problem canhave you running around in circles. At such times thehelp provided by consulting an authoritative source canget you back on the right path. This book is eminentlysuited to the provision of such guidance, being based onmany years of practical fault-finding experience andpresented in such a manner that quick reference toadvice on particular problems is easy - this is guaranteedby the extensive symptom index. To those new to thegame this book should be a godsend, providing clearguidance on the problems that arise in day-to-day video/TV servicing.

The coverage is surprisingly wide, dealing with allaspects of TV receivers (including teletext and remotecontrol systems) and domestic video equipment. Thishas been achieved by cutting out lengthy exposition oftheory and sticking to what goes wrong with practicalcircuits and mechanisms. Provided you can read a circuitdiagram, this book takes you in one jump into the worldof expert servicing.

A line has to be drawn somewhere. So old TV setsusing valves are not covered. There are not that manysets of this type still in service. The emphasis is on thesets of the transistor and i.c. era, going back as far asthyristor line output stages in the case of TV receiversand top loaders in the case of VCRs.

While most chapters consider a particular part of theset or VCR, e.g. power supplies, line timebases, VCRsystem control arrangements etc., there are in additionvaluable chapters on test and diagnostic equipment (notforgetting test patterns and what they tell you), intermit-tent faults and repair techniques (including surface -mounted components).

The book has been carefully devised to meet the needsof today's service technician. It doesn't omit suchpracticalities as repair viability, the prevention of call-backs and safety. We feel that it represents a veryworthwhile investment, presenting as it does a wealth ofinformation that's either not available elsewhere or isspread through back issues of technical magazines.There is a special pre -publication offer until September23rd at £22.50 inclusive of post and packing - seeadvertisement on page 865. J.A.R.

Digital Techniques by K. J. Bohhnan, I.Eng.,F.S.E.R.T., published by Dickson Price Publishers Ltd.,Hawthorn House, Bowden Lane, Brooldand, Kent TN299RW at £9.95.

As we are all too well aware, more and more digitalcircuitry is being incorporated in TV sets and VCRs. Doyou know exactly how i.c. memories, AD/DA conver-sion, input/output and interfacing arrangements work? Iimagine that we could all do with a handy reference bookon such subjects to refresh our minds from time to time.

This one is certainly clearly presented and easy to read.It covers the Ditigal Techniques syllabus for part three ofthe City and Guilds course 224 on electronics servicing.Although written to cover this particular course it shouldprove of help to anyone wishing to understand the basicsof digital circuitry. Its coverage inclines towards VDUs,keyboard encoders and the digital control of motorsrather than specifically consumer electronics applica-tions. Compact discs, teletext and the use of digitaltechniques in VCRs are not mentioned. J.A.R.

The ATV Compendium, edited by Mike Wooding,G61QM, published by the British Amateur TelevisionClub at £3.50. Available from BATC Publications, 14

Lilac Avenue, Leicester LE5 1FN.

The BATC has produced some excellent publicationsover the years - including its magazine CQ-TV (whosedistribution is restricted to members). This latest bookprovides details of a wide variety of video, r.f. andspecial projects. These have been selected on the basisthat they employ up-to-date technology while not requir-ing the use of sophisticated test equipment. For spacereasons, and because the editor feels that the time hascome to place the emphasis on the higher bands, the r.f.section does not contain any details of 70cm equipment.

The extensive video section includes, amongst otheritems, a superimposing caption generator, an electronicATV test pattern generator, a teletext pattern gener-ator, a dual -standard colour coder and a video distribu-tion amplifier. The r.f. projects consist of a GaAs f.e.t.24cm down -converter, a 24cm f.m. ATV transmitter anda 3cm ATV transceiver. Special projects are a digitalframe store, a universal sync generator and an EPROMprogrammer for use with the Spectrum range of compu-ters.

The book is produced in the usual BATC style. It's avaluable source of information for those interested inbuilding their own video/TV equipment.

BATC membership details can be obtained from DaveLawton, GOANO, Grenehurst, Pinewood Road, HighWycombe, Bucks HP124DD. J.A.R.

Books ReceivedA Concise Advanced Users Guide to MS-DOS by N.Kantaris, published by Bernard Babani (Publishing)Ltd., The Grampians, Shepherds Bush Road, London W67NF at £2.95.

PC -DOS and MS-DOS microcomputer system users whohave mastered the basics and are looking for ways toimprove the efficiency and appearance of their systemswill find this book useful. As with the author's previousConcise Introduction to MS-DOS, you can use sectionsthat interest you without having to read through thewhole book. There are 68 pages with paperback.

More Advanced Midi Projects by R.A. Penfold, pub-lished by Bernard Babani (Publishing) Ltd., The Gram-pians, Shepherds Bush Road, London W6 7NF at £2.95.

This book is intended mainly for electronic musicenthusiasts. The projects featured are more complexthan those in the earlier MIDI Projects book. Theyinclude a merge unit, a programmer and a channeliser.Not a book for beginners. There are 113 pages withpaperback.


TV Fault FindingFerguson SAP1 Satellite Receiver

The customer complained that the satellite TV pictureintermittently became snowy. At the house we foundthat the receiver unit was very sensitive to tappingvirtually anywhere on the PCB. This produced visionsplashing. A careful look around showed that R149 hadnever been soldered - the legs were bent over and weremaking good contact. Soldering R149 into circuit cer-tainly seemed to cure the problem. The manual doesn'tseem to be available yet, so when we got back I phonedFerguson who kindly faxed a circuit diagram. Thisshowed that R149 provides the 12V feed to the r.f..modulator.

While in contact with Ferguson I took the opportunityto ask about the very high running temperature of thesePace made units. An engineer said the company wasperfectly happy with the situation, but I can't helpthinking that the heat will eventually lead to reliabilityproblems. Another puzzling thing is that the regulatorsare rivetted instead of bolted to the heatsink. This wouldseem to me to be unwise for two reasons. First rivetstend to work loose, causing problems with overheating.Secondly replacement is more difficult. N.B.

Salora/Luxor Mk 11/9570 Satellite Tuner

Following a night with a lot of lightning we wereinundated with the usual dead equipment calls. Amongstthe casualties was a satellite TV tuner at a local touristattraction. It had not been bought from us as the ownerhad obtained it when living in another part of thecountry, and was of the type intended for Eutelsat/Intelsat reception, with a 1.8m dish. The fault was nooutput and no front panel operation. This is the tell -talesign of a blown LNB fuse, which was the case. The in -line fuseholder was chewed up as the fuse had previouslybeen replaced. A check on the 18V rail showed that itwas at about 9V: the regulator was drawing excessivecurrent as it had a 28(1 leak to chassis. Replacement callsfor a fair bit of dismantling. N.B.

Ferguson TX90 Chassis

One of these 14in. portables would "go off" when chang-ing channels. We found that there were dry -joints on boththe field output transistors. It looked as though theheatsink on which they were mounted had received aknock, forcing the legs of the transistors farther throughthe board than they ought to have gone. N.B.

Thorn 1615 Chassis

This set had been seen by one of our field serviceengineers a few days previously. The complaint had beenno results and he'd repaired some dry -joints on the coils inthe line output stage. This time the set had to be broughtin - there was an i.f. fault, i.e. no sound and a blank whiteraster. A check on the voltages in the i.f. strip showedthat they were haywire. Resistance checks then showedthat the first i.f. amplifier transistor VT1 was leaky whilethe third transistor VT3 was open -circuit all ways round.Replacing them made no difference and the base of VT1

Reports from Nick Beer, Gerry Hoey,J.G. Grieve, Chris Orr, Alfred Damp,Ray Crockit and Ian Bowden

was at over 6.7V! Not much more time was wasted beforewe changed the TCA270SB detector/a.g.c. chip. Thisfinally restored the signals, but there was a severe striationdown the left-hand side of the picture due to the linelinearity coil's damping resistor being open -circuit whilethe c.r.t. was, as usual, very low emission. N.B.

Hitachi CPT2650

Not a fault perhaps but something that could catch youout - no picture at switch on, the picture appearing up tohalf an hour later. The cause is incorrect grey -scalesetting. My first experience of this was after replacing ac.r.t. N.B.

Ferguson SRA1 Satellite Receiver

Ferguson has issued the following advice on the SRA1Astra satellite receiver system in the latest issue ofFerguson Feedback.

Always disconnect the receiver from the mains supplybefore removing or fitting the LNB. As the cable carriespower to the LNB, an accidental short-circuit is possiblewhen making the connection, leading to power supplyfailure. The LNB F connector must be water -tight toavoid serious signal degradation.

As a general guide to fault finding, if any of the LEDslight but the screen is full of snow, check the LNB'soutput with a portable spectrum analyser or a signalstrength meter. Alternatively substitute a known goodreceiver. If only snow is still present, suspect the LNB orthe cable. Before changing the LNB, make a visualcheck that the dish is correctly aligned. When doing thisremember that the dish focuses light, heat and sound -beware of sun glare and sound from overhead aircraft.

If only half the channels can be received, the fault isdue either to the polariser or the transistor that changesthe polarising voltage.

Philips CP11 C Chassis

An EW fault on one of these sets was traced to R3599(47(1) being open -circuit. While investigating this fault wenoticed that two of the transistor types have been trans-posed in the circuit diagram, i.e. T7600 should be shownas type BC558 instead of type BF819 while 17601 shouldbe shown as type BF819 instead of type BC558. G.H.

Philips CTX-E Chassis

This one kept losing its memory. The 2.4V cell 1777 hadbeen fixed in position but never soldered. All was o.k.after soldering. J.G.G.

Philips 2A Chassis

These sets can give you a bit of trouble when one comesin with a short-circuit line output transistor. C2609 (9.1nF)in the diode modulator circuit is a known offender.Sometimes we have also replaced the EW modulatordiodes D6609 (BY228) and D6610 (BYW95C), the


protection capacitor C2618 (1.5nF) and the 140V h.t.reservoir/smoothing capacitors C2697 and 02701 (both47µF - we use higher voltage ratings in these twopositions). It has not been possible to pinpoint theprimary cause of the trouble but we find that replacingthese components avoids any comebacks. J.G.G.

Rank T20 Chassis

We find that it is often necessary to replace a number ofcomponents when the BU326 chopper transistor 7VT2goes short-circuit. These items are as follows: 7THY1(BR103), 7VT1 (BC252B), 7R17 (2.2,10, 7C4 and 7C5(both 47µF) - and of course the two fuses 7FS1 and 7FS2.In addition all the diodes in the power supply moduleshould be checked. J.G.G.

Fidelity ZX3000 Chassis

This set was dead with the chopper transistor TR3 short-circuit and both fuses open -circuit - the mains fuse Fl(T2A) was blackened. When these items had been re-placed we still had no results as R97 (4.7fl, 4W) in thefeed to the line output stage was open -circuit. Ourexperience with these sets has been that if any one of thediodes in the bridge rectifier circuit is faulty it's advisableto replace all four with the larger version of the BY127.It's tricky but it can be done. C.O.

Thorn 9600 Chassis

Insufficient width with the extreme verticals bowed in-wards was traced to R865 (4.7fl) in the diode modulatorstage being open -circuit. It's a flat type located behind thetripler and replacement necessitates complete removal ofthe scan panel.

Another of these sets tripped at switch on. We foundthat the T9013V line output transistor VT801 was leaky.As we didn't have one of these to hand we decided to fitan R2010B - the chopper device used in the old 3500chassis. A week-long soak test showed that it workedquite happily in this position. C.O.

Hitachi NP81CQ Mk II Chassis

There were no results and a check on the 111V h.t. linerevealed that it was at 20V via the start up diode D908.Checks on the STR441 chopper chip IC901 showed thatthere was OV at pin 4. R904 (82k11, 0.5W) was open -circuit. A.D.

Ferguson 16A2 (TX90 Chassis)

The reported fault was "only snow when the set firstcomes on". When we tried the set we found that thisdescription was correct, but the customer had neglectedto tell us that the fault lasted for only about thirtyseconds. We tried a new tuner, then the M923 tuningchip, but neither of these was responsible. The setstarted to take longer and longer to come on, and at lastwe were able to get some sensible readings from the testequipment. The tuner unit's tuning pin was permanentlyhigh at 31V. A check at pin 19 of IC902 (M923) with theoscilloscope then revealed that there were no tuningoutput pulses. At this point the set returned to normalworking and had to be left for another day.

The next time the fault occurred we immediatelychecked the 5V supply to the chip. It was missing from

the 5V regulator which was without its 12V input. Thiscomes from the main board and was present at theoutput from the 12V regulator. A check on the mainboard print showed that there was a hairline crackaround the solder pad where the 12V supply is taken offto the tuning board. A.D.

ITT TX3446

This set came in witk a blank raster. A quick scopecheck showed that a composite video signal was presentat the digital video board, was of the correct size andshape and was entering the VCU2100A video codecchip. The digital signals on all the parallel data outputpins were of incorrect shape and size however. Replac-ing the chip restored normal results. A.D.

Mitsubishi CT2227

This set suffered from field collapse. The old rule aboutlooking first paid off: two electrolytics appeared to bevery stressed. A check with the circuit diagram showedthat they were the field scan couplers C412/3. They areboth 330µF, 50V, and both had bulged tops. A coldcheck with the Avo showed that one of them was open -circuit and the other short-circuit. A.D.

Toshiba C2095

This set would trip and go off shortly after switching on.If you switched off, waited half a minute, then switchedon again the cycle would repeat. All was well when theset was powered at 210V via a variac, and a check on theh.t. rail indicated that there were no problems here.After we ran the set for a quarter of an hour in this statewe decided that the fault was probably in the fail-safe(over -voltage protection) circuit. This is centred aroundtransistor TR471, but the voltages here were in order.Placing the meter's probe on the base connectionproduced a trip however, as did touching the 6.2V zenerdiode D472 which is connected between TR471's baseand chassis. We checked TR471 out of circuit and foundthat it was o.k. Deciding that removal of the zener diodefor a zenering test was hard work (that comes last) weremoved its 1M1 feed resistor R476 and found that itwas open -circuit. A replacement cured the fault.

A number of Toshiba sets use this chassis, which wasalso fitted in some Bush/Murphy models (Rank T24chassis). R.C.

Salo ra 26J40

This was an odd problem. The set had been in theworkshop three weeks previously, when we had repla-ced a faulty LF0041 hybrid Ipsalo control chip. Itsstart-up regulator section had failed. This time the samepart of the chip had failed and the set wouldn't come on.Examination of both the faulty chips showed that therewere signs of excessive heat around the start-up regula-tor transistor. After fitting another chip we made somefurther checks around it. When running, line pulsesshould be present at pin 2. This is connected to theregulator's zener diode, the action of the pulses keep-ing the circuit off for most of the time. These pulses werenot present because RB723 hadn't been fitted from new.Somehow the set had managed to work for around fouryears before failing. I.B.


Dealing with Video Tape Chewing

Tape damage causes more customer hassle than almostany other VCR trouble. There are many ways in which aVCR can damage tapes - in spite of the built-in syscon,whose main function is to prevent this. Especially whenintermittent, the fault can be difficult to trace and cure.But careful examination of the damage to the tape willgive you clear evidence as to what's happening, and inmany cases of which particular deck or control systemcomponent is faulty or misadjusted. If the fault is intermit-tent, the key to diagnosis is sight of the damaged tape -get the user to bring you a sample.

Basic ChecksWhen dealing with this problem, examine the surface of

the tape and closely watch the behaviour of the deckduring loading, unloading and normal running in the play,cue and review modes. A dental mirror is essential for thispurpose, the illuminated type being ideal. Use it toexamine the surface and edges of the tape as it runs acrossevery component in its path, including the spool carrierswithin the cassette where relevant.

Some chewings occur only in the search modes (parti-cularly review), which are well worth checking when thesymptom appears to be intermittent - especially withVideo 8 equipment. Where the tape oxide is beingstripped or shredded, even on the tiniest scale, the pointwhere the damage is occurring will almost certainly begiven away by the presence of a pile of black tape debrisimmediately below, on the deck surface.

Types of DamageThe best starting point is the tape itself. In the following

text ten typical tape damage patterns will be analysed,with notes provided on effects, causes and probableculprits.

Starting with the most dramatic cases, Fig. 1(a) repre-sents the end of a clear leader tape that's been pulled outof its anchorage in the cassette's spool carrier. This canhappen only at the end of the fast forward or rewindfunctions, and is normally prevented by the end sensorsseeing the cassette lamp or LED. With one or twoexceptions (early designs) lamp failure invokes shut down,so likely causes of this defect are incorrect position(slipped down?) of the end sensors or lamp, or possiblythe fact that the lamp has been obscured by foreignmaterial or a deposit of nicotine.

Conversely, auto -rewind or auto -stop will be unexpect-edly triggered by a tape whose oxide layer has been tornoff, as depicted in Fig. 1(b). To the end sensor theremaining clear backing layer looks like leader tape. Theinvariable cause of this one is dew - condensation on thesurface of the video head drum - and corresponding blackor brown patches will usually be found here. Heavyscrubbing with a solvent -moistened cotton bud will re-move them. The most common cause of this symptom isuse of the machine too soon after head cleaning by handor with a wet cassette, though natural condensation, notalways detected by the dew sensor, may be responsible.The operation and effect of the head heater and dew

Eugene Trundlesensor, where fitted, are worth checking. Most sensors,surprisingly perhaps, go high resistance when moist.

Severed TapeFig. 1(c) shows a severed tape - the break usually

occurs when a badly caught -up tape is extracted from themachinery by the user or an engineer. Video tape is verytough stuff, and a VCR's motors don't usually havesufficient torque to tear across it in this way. Ring -loadingVCRs are the ones most prone to this "tape caught in themachinery" effect, with the tape trapped and tangledbeneath the loading ring, its drive cogs and retainers.Failure of the spool drive system (motor, idler, etc.) toretract the tape into the cassette during tape unloading isthe cause.

Tape ScrunchingSimilar causes lead to the severe scarring and creasing

shown in Fig. 1(d). This is the sort of trouble that makesyou wince as you hear the tape passing round the headand see the picture disappear into a mass of lines, dotsand snow - sometimes not to return until you've cleanedthe heads. The scar material and loose oxide layer oftenblocks the head gaps. As well as removing the picture(and sound with the Video 8 system), hi-fi sound may withother formats be affected.

The cause of this type of damage is less easy to pindown, but it always means that the tape has gone adrift inthe deck, way out of its normal path. Unless the tapecreeps a long way up or down due to some influence thatcauses excessive deflection, this sort of snarl-up takesplace during cassette or tape loading/unloading.

We'll take cassette loading first. A slack tape inside thecassette will produce this symptom. The cause is usuallyincorrect reel behaviour when the cassette was last ejected- see later. If the guides etc. are not fully retracted as thecassette comes down, the tape is crumpled on them.Check the mechanism phasing and the mode switchsetting.

Both reels should be soft braked during tape loading.Check this if the reels spin and the tape bounces duringthe loading process. Conversely, fully -braked reels (due tothe solenoid, mechanics or syscon) will result in the tapebeing stretched and strained during the attempt to load.

The greatest potential for the type of scrunching de-

la)

let

Missing oxide layer

Ib)

(I) (9)

(,)

Fig. 1: Types of tape damage. See text.

Id)

*A -A -A -A -A -A -

(h)


picted in Fig. 1(d) is during the tape unloading phase,should one of the spools fail to take up the slack fully.Test at both ends of a three-hour tape. If a loop of tape isleft hanging from the cassette's flap at eject suspect thereel idler, reel motor if separate, drive belts etc.

Tape looping, with subsequent crumpling when thecassette's flap closes, also commonly occurs at the end offast tape transport, usually rewind. The most commoncause of this is worn "hard" brakes or the levers thatoperate them - after rewind the right-hand brake shouldcome on first to maintain tape tension across the front ofthe cassette. Check whether there are any manufacturer'smodifications for this.

Some VCRs (Sharp for example) have a program fortensioning the tape as a prelude to ejecting the cassette(from the stop mode). This takes the form of a kick fromthe loading motor to a reel, a kick of the loadingmechanism or a short fast -forward sequence. Check themechanics involved as necessary.

Another cause of tape scrunching of the sort shown inFig. 1(d) is failure, often intermittent, of the take-up spoolto rotate in play or record. This is usually caught by thesyscon before damage is done, but we have had a fewcases where several metres of tape were wound round thecapstan shaft, probably initially due to a sticky spot onone or the other. Zero or low take-up torque is typicallycaused by a slipping idler, clutch or belt: stop the spooland see what slips first.

Edge and Scratch ProblemsFig. 1(e) shows the serrated edge sometimes seen in

tapes from old or worn machines. It's usually caused by aworn and grooved guide somewhere along the tape path,but can be the result of incorrect spool height settings, thetape scraping on the shoulder of the lower drum (tape toolow) or scalloping as it passes a worn or faulty audio headstack. More than any other, this type of damage leads to abuild up of oxide dust deposits or flakes on the deck,beneath the trouble spot.

A scratched or scored tape, as shown in Fig. 1(0, givesrise to a continuous horizontal line of dropout at somepoint across the playback picture. It can be seen best byholding the tape so that light is reflected across the wholewidth. The cause is an abrasive speck on one of the fixedcomponents along the tape path - the lower drum, fullerase head, audio head stack or the back -tension pole.Examine these carefully and clean the entire tape path.

If, as in Fig. 1(g), scratch lines run at an angle of about5° to the edge of the tape there's no doubt that thedamage is taking place while the tape is traversing therotating upper drum. Foreign bodies are usually responsi-ble, but a chipped or damaged ferrite head tip is a moreexpensive possibility.

Sometimes the scratching or creasing effect takes theform of regularly repeated dots, dashes or patterns on thetape, as shown in Fig. 1(h). The symptom is of rhythmi-cally repeated dropout sequences in the playback picture.It's a sure sign of damage to or dirt on a rotating deckcomponent - the capstan, the pinch roller and the exit/entry guide sleeves are the most likely culprits. If thecause of the trouble isn't obvious on inspection, a clue tothe diameter of the offending part is given by the spacingof the pattern. Typical causes are dirty tape guides; grit,fluff or cotton on the pinch roller (replace it!); and apolluted/damaged capstan shaft.

Fig. 1(i) shows a tape with a wrinkled or corrugatededge. This may be at the top, giving rise to sound flutter

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and dropout, or at the bottom, in which case there will bepoor control pulse transfer. This condition is often theresult of excessive take-up torque, but a badly misalignedstationary guide can also be the cause. If it's confined tosmall areas of the tape, watch the action during andimmediately after tape loading - the tape may be verti-cally misaligned for a brief period or stretched over aguide collar.

The same sort of defect leads to the damage shown inFig. 1(j), where one edge of the tape is actually foldedover, causing loss of sound or the control pulses (top/bottom respectively) and producing an audible sound asthe video heads hit the overlap. Grossly incorrect reelheight settings can, also be the cause. The ultimateprogression of a folded tape is a reversed one, with nosound or vision at all.

Tape RepairAt the current low price of blank -tape cassettes, at-

tempts to repair a damaged tape are rarely worthwhile.Spending time on this is justifable only when the softwareis very precious.

Tape splicers are available commercially and work wellwith new blades and the use of cotton gloves by theoperator. Cut back to good tape and follow the instruc-tions to the letter. Where, as is usually the case, thedamage is near the end of the tape, cut back and splice tothe clear leader. It's possible to dismantle a cassette toretrieve or anchor tape. Reassemble it with care and markthe cassette with its new shortened playing time.

Old video tape strung across the vegetable patch makesan excellent bird scarer. . .


ECONOMIC DEVICES PO BOX 15, WOLVERHAMPTON, WV2 4ik7..53011 272 2SC1678 112 452110 240 80737 014 600548 0.31 84126 Ill 6A1196 743 MC1330P 1.91 SA55607 542 S181096 431 534970 la T044140 3.265656 321 25C1741 7125 A74734 5.41 BC2128 026 80X624 1.911 BU137 19 171413021 1.73 MCI 350P 030 SASSIOT 5.42 sT84090 0.52 78493 111 1094442 4167052 5.61 2501810 1.10 451236 333 122131 010 8D0133A 1.91 BU205 1.15 11A13133 ZS MC13517 132 SAS570S 2.61 a840 537 TCA270S 215104/500 4.757053 561 252.1815 020 A524011. 133 8C214 010 80720 121 BU206 111 8A13402 717 MC1352P 1.40 SAS580

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225 453122 3% 82.3W 035 06137 029 BU326A 439 181374 1% MC145288CP 215 SC95047 136 71073/ 211 1C9730 111 1049503 232NODS 0.05 25C1942 154 A14305 IA 13301 023 87753 031 8006 1.6 841 17 9 MC1712 370 509202 17.96 160149 97 704750 225 113/1313 3155402 0.01 2SC1959 026 AN315 241 80302 0.53 131154 0.26 84470) 1.53 1141377 1.75 MC5192 1950 5042112/2 1021 T6045 79 TCA93013 5.3 108733) 2.68144007 107 2SC1957 035 AN316 553 BC303 030 07157 033 BU107 11/2 6613821 26 MC7724CP 3.6 56264.73 53 16049 13 TCA822 2.3 11310171 7%144793 0.07 2501953 133 AN318 135 8C3374 106 07151 118 1311112 521 HAIM 29 MC8105-50. 723 56613 176 160521/ 10 306830 544 7E41002 23064448 0.05 2SC1%2 133 65320 5.47 8330/16 011 81159 118 8U126A 117 467392 13/ MC82203 223 50629 127 26168 311 709900 734 7991009 OM65401 0.11 2SC1989 1.78 411321 225 8C309 011 87160 0.31 BUSOD 1.45 1091391 237 3E0111 0.75 506533 1131 16059 LT/ 1CA910 La 1E41011 15065402 013 2SC 133 321 01322 1.711 1312176 0.13 87187 031 8U5011A 19 18137 176 6E6002 026 511125H 731 190/31/ 13 104940 021 TEA10205P 43315403 0.18 2501985 1% 45337 537 81227 0* 87173 034 84536 115 181391 216 6E6102 OA 011691D 330 790051/ 29 1189102 29 TICICIC 041145101 015 2SC2009 034 453407 133 acne 0.11 86771 095 6116013 115 HAM% 211 6E8001 434 SKE2F1/04 131 60119 I11 0.13010013 iv rims 0.11145160 0.14 23C2029 233 #74355 531 12337 0.09 8717/3 0.10 84705 1.51 1191152 la 3E0471 115 21020.3211 11.16 190131 416 10390014 93 11044 07274914 OM 25C2028 211 0062 191 8C338 012 111179 036 BUM 0% 110115311 2.07 MJ2501 131 04.E471/06 5% 1%14V La 706101393 231 11045 056S1555 0.31 25C363 09 0070 1.3 80368 010 E0.110 036 09007 1.40 1103870242 131 6530131 1.0 SKE47203 1.07 19016 10 11361003A I.79 0G7 0.7/244 0.10 2502078 3.39 4551 I 1 10 132.440 0.69 8731 032 138214 1% HD38750A53 577 6.1481 1.53 SKE4F2/136 0.14 79319W 19 304117059 222 717130 1555921 110 20C2073 154 A5512074 91 87.441 046 87162 034 8U757. 131 11038/506-7 725 1912955 IA SKE43/10 133 19033 1.3 7391006A 7% 317110 053762219.4 037 22020890 1.15 955132 412 12454 036 87183 039 8UX7/4 030 193800850 lin M10055 125 50E6202 IS 1839 111 7041010AF 4.8 117112 0242743/53 035 2SG209 131 07/45250 4.40 12460 042 87184 1143 BUX85 IN 11014101405 1298 MJE310 IN 59573/10 10 19051 7.14 11311011 2.411 117117 035253051 0.99 2002141 2.44 455610 79 8C461 0.47 135185 031 89126 0.13 1115111010 OM 19E520 IA 051/10 215 90549 56 1041010 10 11P121 06313055 0.71 2SC2166 1.17 455612 2.11 BC462 051 137191 0.74 89127 0.13 111514134 till sus us 511310 3.14 190571/ 277 71311011A 151 17126 036213442 1.16 2002216 OA A15613 421 82.163 071 87195 0.14 87133 616 1115111032 150 11123213 111 814313 231 19062V 10 1041031 246 117132 199313702 114 252.2233 120 955630 335 82.470 032 811% 0.17 0164 1.44 806231 9/1 141.23713 251 $1414 IA 79064 331 10610348 20 117137 036212.379 110 25au6 03 4557015 1.9I 12479 041 131197 0.16 112176 11.42 117/6232 195 447.211 5.77 01.432/2 1/4 TA7027 49 10A113353 23 11729 OM263705 0.16 2002270 114 456250 2.16 BC532 021 13198 0.17 BYI 79 1.6 1066251 5.21 141923 III 01439 26 TA7050 1.74 10A1039 LS 113915 016343106 114 2502314 117 47746300 4.49 82.545 017 83199 0.17 87182 1.05 1167103 5.53 0.113213 2.7 SIAM LIA 791051 1.74 31411337 115 TIPZIA OK253797 116 25C2231118 7111 A56310 4.54 82.517 010 12330 031 87187 177 1114992 III 2253114 7131 SLIM 3.74 187054 23 13610370 20 33913 063213711 0.11 2502551 1A 456340 IA BC548 010 BF218 136 BY 189 Ili 9119012 322 045693166 914 21293 0.32 1A701308P 1.71 70A1041 115 TIPBC 09943771 2114 1SC2565 344 456311 1.42 130519 010 0731 017 719198 152 10.0015 124 11353134 411 57901 13 832 117061AP 117 10A1047 325 117290 175213772 19 2SG2570 0.10 456363 1610 82.550 010 3737 165 13307 122 1311207 133 MM5369N 211 9.3189 917 181059 113 10A10598 4.11 1113355 0152713773 220 25C2577 1.60 916531 19' 80556 0.16 135240 119 84208 1.11 KIM 20.16 4444536789/71 LA 5516861990 0.12 187070P 193 104705414 121 7173111 041213819 0.6 25C2578 475 456551 050 12551 010 87211 017 07210-400 618 KA2101 110 66584171 114 5519628/4 2111 191012P 137 1091080 791 MX 0482143823 1.11 25C2671 191 4746552 0% BC558 0.10 137245 0.50 131210-603 427 KC581C 7.11 6514331 13.6 01169666 11.23 1670147 1% 111111062 325 111131A 034343904 115 2502884 13 AN6610 116 BC559 010 872458 0.43 13210.90 10 KCMG 4.0 54151405 732 574571734 7.11 TA7076P 7% 7041 151 122 11113111 0323439013 162 2503153 6.51 AN7111 1.73 805600 0.14 8F246.4 292 BY223 1.0 L.200G3 IA 4474143590 1.511 04297146 311 TA7089P 3.11 1041190 2.11 11P31C 0302114101 133 25E372 16 457116 7.52 80635 034 87255 OD 13324-600 111 LA1201 075 MP1192 517 2529/156 6.04 3470927 134 10611902 20 117324 0352/44240 29 25073 116 AN1145 us 12636 020 12256 OD 134226 lb 1.41210 136 1402794 411 2429722 1116 1970937 339 106133 131 117328 0.462144444 0.90 2SC383 133 451146 53 13837 024 85251 034 8Y227 621 1.61230 744 672812 117 012972365 171 TA71027 ill 1067235 39 nssc OM16293 050 25C388 127 8747151 23/ 83639 036 87258 033 10228 IA 2.81320 211 63512 137 51297649/4 91 TA7103P 151 1561928 19 17733 515

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254940-229215

250414250471

1.11

2.13

134.843

00% 43-"...070./

8024281910802434 031 87339

050144

134511

0453IA2.04

111340K

LM34851115215

Q30582322

1.11

0.67

074/65102476611

101259

876297147533P

7100.0

TDA2531042591

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USE YOUR ACCESS OR BARCLAYCARD Si TEL 0902 712083

* VIDEO HEADS * FROM £13.95.PLUS + PLUS + PLUS GENEROUS MIXED QTY DISCOUNTS

AKA!Machine Nos: VP77 VP88 VP7100 VP7200 VS1 VS2 VS3 VS5VS1O VS9300 VS9500 VS9700 VS -P1 VS -P5

AMSTRADMachine Nos.: VCR4500 VCR5200 VCR9000Machine Nos.: VCR7000VCR4600

FERGUSON/JVCMachine Nos.: 3292 8903 3V00 3V01 3V06 3V16 3V22 3V23 3V243V29 3V30 3V31 3V35 3V36 3V38 3V39 3V49

FISHERMachine Nos.: FVH - 0520 0530 D620 D720 P420 P510 P520P530 P615 P620 P622 P710 P720 P721 P722

GECHead Pad Nos.: 5458161 5458165Machine Nos.: 4000H 4001H 4002HHead Part Nos.: 5458282 5458413 5458415 5458992Machine Nos.: 4001H 4004H

HITACHIMachine Nos.: VT3000Head Part Nos.: 5458104Machine Nos.: VT4000 VT4200 VT5000 VT5500Head Pad Nos.: 5458161 5458165Machine Nos.: VT6500 VT7000 VT8000 VT8040 VT8100 VT8500VT8700 VT9000 VT9300 VT9500 VT9700 VT9900

VHS A

VHS TVHS R

9VH4600

VHS A

VHS

VHS I

VHS K

VHS A

VHS H

VHS I

Head Part Nos.: 5458282 5458413 5458415 5458992Machine Nos VT11 V14 VT33 VT34 V1330 V1340 VT5030 VTP10 VTP30 VHS K

InMachine Nos.: VR3605 VR3033 V93905 VR3913 VR3914 VR3935VR3943 VR3963 VR3993 VR3975 VR3985 VR3986 VR3833

JVC (see also Ferguson)Machine Nos HP4000 ii112200 HR3300 HR3320 HR3330 HR3350HR3360 HR3660 HR3750 HR3860 HR4100 HR7200 HR7600HR7610 HRD110 HRD111 HRD120 HRD121 HRD140 HRD150HRD220 HRD225

MITSUBISHIMachine No.: HS200HS700 HS303 HS304

VHS A

VHS A

VHS AVH700

NATIONAL PANASONICHead Part Nos. VEH0099 0103 0115 0121 0131Machine Nos.: NV300 NV322 NV332 NV333 NV340 NV390 NV2000NV3000 NV7000 NV7200 NV7500 NV7800 N\7850 NV3170NV8200 NV8400 NV8600 NV8310 NV8620

Head Part Nos.: VEH0171 VEH0218Machine No.: NV370 NV3708Head Part Nos.: VEH0171Machine No.: NV330 NV777Head Part Nos.: VEH0286Machine No.: NV430Head Part Nos.: VEH0174Machine No.: NV366

SHARPHead Part Nos.: DDRMU 0002 HE17'21,27Machine No.: VC581/2/3 651 681/235 659 699Head Part Nos.: DDRMU 0001 HE00 0002 HE02 04 05 06Machine No.: 2C9 VC110 VC200 VC220 VC300 VC381 VC384

VC386 VC387 VC388 VC477 V0481 VC482 VC930 VC970 VC3300

VC9100 VC9300 VC9400 VC9500 VC9600 VC9700

Head Part Has.: DDRMU 0001 HE09Machine No.: VC7300 VC7700 VC7750Head Part Nos.: DDRMU 0001 NE10Machine No.: VC6300Head Part Nos.: DDRMU 0001 HE12Machine No.: VC8300Head Part Nos.: DDRMU 0001 HE14Machine No.: VC2300

SANYOHead Part Nos.: 1430242 T01700 1430242 122300Machine No.: V105000 VTC5150 VTC5300 VTC5400

Head Part Nos.: 1430242 102290Machine No.: V105350 VTC,5500Head Part Nos.: 1430762 702000Machine No.: VTC9300 VTC9455 VTC9500Head Part Nos.: 143072 702100Machine No.: VTC9300PS VTC9350

SONYHead Part Nos.: A6762 044A, 044B. 054A, 147AMachine No.: SL3000, 8000, 8030. SLT 6Me, 7. 7E, 7MEHead Part Nos.: A6762 012A, 038A. 055A, 129AMachine No.: SL5W, 5003 5100 SLC5, C6, C7Mead Part Nos.: A6762 072A, 122A. 136A, 139A, 212AMachine No.: SLC20, C30, C33, C40. C44SLF1, E30, HF72, T20, T30

VHS B

VHS M

VHS N

VHS W

VHS X

VHS S

VHS C

VHS

VHS E

VHS L

VHS F

BETA D

BETA D

BETA X

BETA X

BETA A

BETA B

BETA W

HEADSHead

Part NoBETA ABETA BBETA DBETA EBETA TBETA WBETA X

VHS VIDEOVHS AVHS BVHS CVHS DVHS EVHS FVHS HVHS IVHS KVHS LVHS MVHS NVHS RVHS SVHS TVHS UVHS VVHS WVHS XVHS 1

ORIGINAL FERGUSON0180 003 2220180 027 0850180 033 8250180 040 0020180 056 01301X0 057 0020180 082 0010180 083 063

PINUPS310 274 44691 200 54691 200 98691 201 12691 201 66691 201 78691 202 87

Price1

£16.95£16.95£27.50£34.49£21.00£19.95£31.92

£13.95£13.95£18.75E81.76£75.43£81.69£21.25E21.25£21.25£81.87£14.75£26.95£21.00£18.75E19.45£20.50£29.00£21.95£35.00£14.25

£31.35£46.02£47.05£48.32£61.55£31.36E46.02E66.03

POA£49.68£62.02£61.66£61.93£49.96£55.37

FERGUSON/JVCVID1 01 X0-003-381VID2 01X0-018-024VID3 01X0-018-025VID4 01X0-018-729VID5 01X0-040-006VIDE 01 X0-033-454VID7 01X0-040-007VID8 01X0-040-017VID9 01X0-065-009VID10 01X0-065-016

GEC/HITACHIviol 1 V5577355VID12 V6413663VID13 V6861471VID14 V6861482VID15 V6886971VID16 V2423461

NATIONAL PANASONICVID17 VXP0329VID18 VXP0344VID19 VXZ0078VID20 VXP0521VID21 VXP0463VID22 VXP0432VID23 VXP0401

SANYO/FISHERVID24 4529V10800VID25 1430662T01201VID26 PR2758VID27 1430490400900VID28 1430420400300

SHARPVID29VID30VID31VID32VID33

RMOTP1029RMOTV1008NIDL0006NIDL0005NIDLOGO4

VIDEO LAMPS/BULBSVID34 LA9295VID35 LA9210SVID36 NAT/PAN.VID37 SHARP 9300

Tension band 73292/PU545904ATake up idler T3292/PU47752Rewind idler assembly T3V16/PU49282Take up idler T3V00/PU49280Loading belt T3V29/30/PU48941-2Roller Assy. (cars. Housing) T3V23/PU49042Take up idler 3V29/30/PU48967BReel motor assembly 3V29/30/PU51381VCapston motor 3V35/36/38/39/PU55371VCass. housing Assy. 3V35/36/38/39/PU29825

GEC 4100/Hitachi VT116 capston motorGEC 4000/Hitachi VT33 f/f rewind armGEC 4001/2/Hitachi 93/9500 flf rewind armGEC 4001/2/Hitachi 93/9500 play idler assy.GEC 4004/Hitachi VT33 f/t rewind armET541 Tuner Unit

Fast forward idler NV2000Idler NV7000/7200Tension Band NV7000Idler NV370Reel Idler NV777Pinch Roller NV333Idler wheel NV333

Reel motor VTC5000/5150Reel drive pulley VTC 5000Pinch roller VTC5000/5150Gear idler Fisher FVH-P615Heart idler Fisher FVH-P615

Capstan motor 73/9300Reel motor VC9700Idler VC387H etcReel idler VC9300 etcIdler wheel VC2300

PLEASE NOTE

ALL VIDEO SPARES

HANDLING

£1.25 + VAT

Universal lamp without socket 290mmUniversal lamp with socket 310mmP.C. MTG. leadless lampEtc. lamp plus plastic shroud.

2.555.006.206150.264.502.90

27.9522.' 022.00

23.502.751.954.201.806.00

0.850.853.502.653.403.301.25

9.504.953.854.502.95

33.5517.95

1.751.852.15

0.450.500.502.53

VP 77VP 68VP 7100VSVS 2 EGVS 3VS 5 EGVS 10VS 9300VS 9500VS 9700VS 9800

32923V 01'163 V 223 V 233 V 243 v 31,323 V 35363 V 38393 V 42'43,443 V 4548.543 V 5557

VBS MX)V05 76013VBS 7000VBS 9000FvFlp 420

V 4000V 4001 1-1V 4002 HV 4100 1-1

VT 1141 88VT 3000VT 5000VT 6500VT 7000VT 8000VI 8500VT 9300VT 9500

DRIVE BELTSAKAID80135D130135086103060134000101DB61340861010130136086103DE10103D130102DBK103

FERGUSONDE10103

VTC 5000.5150VTC 6000VTC 5300VTC 5400VTC 5500VTC 6500VTC 9300VIC 9350VTC M10,1170VTC M2130,31SIC M50

DB610308610306610801360370107806OBK 150DB61505107540V1075400107540

FISHERDB6146DB61050136105DBK10viD7532

GEC0K 2900129006129000128

HITACHI000128DBK103DB6125086142DB0143080129DB6144DBK I 29DB0129

SANYOV107807VID78070861050801050136106VID7533080104DBK145VID780901078090107809

00 .86C0.860.42E1.7601 .080.76£0.680.650.420.420.9611.42

0.420.420.42£0.83£0.6840.94£0.88£0.60C0.70CIO 70C0.70

12.6602.34C2.14£1.760.62

113.68C0.68C0.68E1.95

0.950.420.46£0 .77C0.68CO 68£0 .68C0.54100 .50

CI 190 19CO 70CO 70£1 76£0 7802 66L2 66E5.61£0 .61CO 61

HR 2200HR 3300FIR 3330HR 3360HR 360000 3660HR 4100HR 7200FIR 7600HR 7650FIR 7700

JVC[1001370130107D136126060103D130107DB6103DB6127000139DB6138DB61320130108

E0.680.650.650.42C2.660.4212.25£6.66£0.86£0.86E1.76

NATIONAL PANASONICNV 300 DB6110 0.76

560110 El 76NV 330NV 332,333NV 336NV 450NV 777NV 2000NV 3000NV 7000NV 7200NV 8600

010752101075210136133DB6131006109000113000111DE16140DB6112

SHARPVC 381383 DB6116VC 385.386 08K116vC 2300 5107545VC 60006300 08K117VC 6500 08K117VC 7300 080118VC 8300 00K119VC 9300/9500 080120VC 9700 DB6121

SONYSL 8000 DBK115SL 8080 08K115SL 8500 DBK115SL 8600 DBK115SLC 5 08K100SLC 6 0107519SLC 7 DEIK100SLC 9 080130SU 7 DBK100SLT 7 ME DIN WOSLT 7 MFR DB6100

TOSHIBAV 55,57 5iD7543V 66.67 VID7540V 7540 DE16123V 8600 08K124V 9600 viD7810V 5250 D8K148V 5280 0EI6148V 5475 0136122

0.52El 520.300.08Cl 760.76L1.080.080.76

0.520.52£1.03tl 760.760.760.76E1.52C3 18

£2.6612.66C2.6611.660.55C1 360.55Ci 760 550.55E1.55

£0.91CO 91£1 .76Cl 7600.91E2.6602.66Cl 76

NEW IN STOCK, A LARGE RANGE OF SLIMLINE REMOTES.

JUST SUPPLY MAKE, MODEL & PART No. IF POSSIBLE

FOR AN IMMEDIATE QUOTE. AVERAGE PRICE £18.00REGISTERED OFFICE. THE COACH HOUSE, MUXTON LANE,

NEW FAX

NUMBER

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Full list available with orderor SAE please 9" x 4"

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TELFORD * MAIL ORDER - CALLERS STRICTLY BY APPOINTMENT


The Room at the BackSummer had settled at Milldale and a new name had beendecided upon for Topcut's Discount Store - "ElectricDreams". There had been a hot debate about this. RalphTopcut had wanted "The Mil!dale Home EntertainmentCentre", but Sid Bias had argued that this was not acomplete description of the business since the store alsosold washing machines and refrigerators. "I know thatsome of our customers are mad" he'd said, "but I doubtwhether many of them get much entertainment out ofwatching their front -loaders in action with the dirty linen.",So he'd won, and Electric Dreams in Terry Green's pinkand green neon tubes was attracting scores of youngerpeople into the store. It had proved to be a great success,and as a result Ralph Topcut was in a good mood.

Peace reigned in the service department. Norman Gateswas deep in the bowels of a Toshiba V8600 VCR, whileAndy sighed resignedly over an anonymous -looking VCRthat turned out to closely resemble the Ferguson 3V35. Itwas probably an ex -rental job and was plagued by headspeed hunting. Andy was terrified of servo systems - eventhough CD players, about which he was supposed to bean authority, have four of them.

Loss of Line DriveYoung Gareth's job was a Sony KV1810 that no one

else had wanted to repair. Its line driver transistor 0509had failed. Fitting another one got the set going again butall was not well - the replacement seemed to run hot.Gareth probed around the area with a scope and foundthat the transistor's drive was too low. A dab with a wetfinger confirmed the problem. There was ample drive onthe far side of the coupling capacitor C538 (0.47µ,F).Gareth didn't like the idea of an electrolytic being run atline frequency, so he replaced it with a low -inductanceMylar type. The effect was immediate: Q509 now ranhappily and was cool. He put everything back togetherand mercifully had no screws left over.

Modulator ProblemMeanwhile Norman had established the cause of the

Toshiba's lack of output signal and was busy changing0661 in the modulator. He spent a few minutes with theequivalents book looking for a more powerful replace-ment but the terminology used was not helpful. So theToshiba type was fitted. This restored the r.f. output andthe machine was put on soak test in the E -E mode.

Scheming

Sid sauntered over to Norman's bench and pulled adrawer open, resting his foot on it. "What do you think ofthis scope?" he said, showing Norman an advertisement ina popular trade magazine.

Norman briefly scanned the advertisement and lookedup at Sid. "I suppose your idea is to catch Ralph T. whilehe's in a good mood and get us a new scope" hesuggested.

"You could put it like that" replied Sid."In that case go for the most expensive one and haggle

as long as you can. We badly need a sixty-meg scope

J. LeJouncearound here what with all the high-tech goods he's puttingon the shelves out front" said Norman.

"A good point" Sid agreed. "They make extravagantclaims about our service and then expect us to operate ona shoestring. It's time they backed their claims with someextravagant test equipment."

A Couple of VCRs

Andy was not feeling too happy. He'd let his meterprobe slip and the 3V35 lookalike now had two faults, theoriginal one plus the consequences of his inattentivemoment. The head drum still didn't revolve. While Sidand Norman continued to whisper together Gareth wasimmersed in his next job, a Sanyo VTC5000 VCR. Andytook the opportunity to nip across into the stores for areplacement IC404.

Gareth had a fierce, unreasoning hatred of theVTC5000 but was determined not to let this one get thebetter of him. Its capstan motor ran at top speed andGareth concluded that the problem shouldn't be toodifficult. He checked around the central control chipIC3001 and to his horror found that the 5V rail was atnearly 9V. Out came the 5V regulator transistor 03001but there was no spare in the stores. It looked as though aBFY50 or a 2N3053 would do. Gareth tried the formerand the machine then worked normally. Very satisfactory,he thought. And time for a stroll.

Sid had gone through to the shop, waving a magazine inhis hand and saying over his shoulder to Norman "I'll tryhim on it now - won't be long!" Norman picked up histoolbox and departed to make some outside calls.

3V35 Problem SolvedGareth stopped alongside Andy and asked about his

problem. "Why not take a look at Norman's 3V35manual?" he suggested. "Norman notes every fault in hismanuals and puts the correct voltages on the diagrams."As Norman was out they borrowed his 3V35 manual andfound the drum speed control part of the circuit. Therewas a circle around R446, which should be 2701d/ Whenit was removed and checked the reading was around800kfl! A replacement restored normal operation andAndy remarked that making such notes seemedworthwhile.

Sid's ReturnSid looked pleased with himself when he returned to

the workshop. "Ralphie boy has just agreed to buy us asixty-meg scope" he announced. "Trouble is, he says itshould enable us to find faults in half the time."

"He can't really believe that" commented Andy."Oh yes he does" said Sid. "He'll expect to see it used

for everything, even mending kettles. Seriously, the timewill come when one won't be enough. We'll need oneeach."

"We'll have to prove that this one, when it comes,earns its keep" added Andy somewhat gloomily.

"That's right" replied Sid, "and the only proof RalphTopcut understands is our output figures."


Eye ProtectionDavid Botto

We tend to take the precious gift of sight for granted. Butif proper care is not taken it's all too easy to suffer eyedamage in a TVNCR workshop. The precautions re-quired are quite well known but are not always observedas conscientiously as they should be.

The TVNCR workshop can be full of hazards to youreyes. These are considerably reduced if the workshop is

well organised, tidy and spotlessly clean. For guidance onthis, see my article in the December 1988 issue.

Sections of aerials jutting out, TV sets left with theirbacks off so that the end of the picture tube sticks out,and various sharp objects left dangerously exposed arepotential eye accidents waiting to happen. The insides ofdelivery vans can also present plenty of hazards if not keptin a tidy state.

GlassesMany people need to wear glasses in order to see

clearly. In a workshop it's possible to shatter a glass lensaccidentally on a sharp corner of the TVNCR chassis onwhich you are working, with possibly disastrous con-sequences for the eye behind the lens. It's far safer - askany optician - to have the lenses made of plastic thatdoesn't shatter so easily. Modern plastic lenses are as hardas glass ones and don't suffer from the scratching andother problems that affected older types.

Eye TestsIt's worth having your eyes checked regularly - despite

the current fee. If you don't normally wear glasses youmay nevertheless find that you need them as you getolder. With the passing of the years the lens of the eyeloses some of its elasticity and is thus not able to focus asaccurately as it once did at close range. As an example, atwenty -year -old person with normal eyesight can seeobjects clearly at a near range of about 250mm. A forty -year old person will have difficulty in seeing clearly at arange of less than 500mm. Fortunately it's easy to correctfor this by obtaining glasses from a qualified optician.Make sure you find one who really knows his job and isprepared to take time and trouble with your lens prescrip-tions. Ask for the best frames and plastic lenses that areavailable. Money spent in this way is a wise investment.

Safety Goggles and SpectaclesA pair of safety goggles is an essential item of equip-

ment for the TVNCR engineer. Each engineer shouldhave his own personal pair - using goggles that someoneelse has worn can easily spread eye infections.

Suitable goggles can be obtained from RS Componentsfor less than £3 plus VAT. They incorporate a soft PVCframe and polycarbonate lens, are easily adjusted to suitdifferent head sizes, and are "Kitemarked" to BS2092.They can be worn over most spectacles without loss ofprotection. The RS order no. is 551-980. Halfords and B &Q also supply suitable goggles. Make sure that the gogglesyou buy have the Kitemark and the number BS2092.

If your eyesight does not require optical correction,

obtain a pair of safety spectacles (RS order no. 551-996,price about £4.85 plus VAT) in addition to your safetygoggles. Safety spectacles look like ordinary ones withprotective side pieces. They are easier to wear if you wishto keep them on all day. For some jobs however safetygoggles give your eyes better all-round protection.

Always keep your goggles and safety spectacles spot-lessly clean. Goggles can be washed in hot (not boiling)water. A proper lens -cleaning fluid is best for safetyspectacles.

Chassis CleaningWhen a TV set or a VCR is cleaned out with a vacuum

cleaner and brush the dust and fine particles can, if theyreach the eyes, cause infection. Furthermore dust canscratch the cornea of the eye. It's wise to wear safetygoggles during the cleaning process.

CRT ReplacementWe all know that we ought to wear safety spectacles or

goggles when replacing cathode-ray tubes. In the work-shops I visit however only a few TVNCR engineers nowseem to take this necessary precaution. The modern c.r.t.is soundly constructed of course and seldom implodes, butdon't get over -confident. Accidents can still happen andit's simply not worth taking chances.

SolderingSoldering and desoldering present a constant risk to the

eyes -a risk we seldom consider. Solder can splutter andif it hits your eye the result can be permanent damage. Ifyou wear optical spectacles with plastic lenses you've adegree of protection. If you don't, always wear safetyspectacles when handling a soldering iron, and avoidshaking the iron to remove surplus solder. Instead, care-fully wipe your soldering iron on a proper cleaning pad.

Lifting Heavy ObjectsLifting extreme .\ heavy objects can not only cause back

troubles but can also result in a burst blood vessel in theeye. This can lead to partial or complete blindness. This is

an important warning - I've talked to a man who lost hissight in this way. Ask your own doctor.

Glues and SpraysFibreglass body -filler is sometimes used to repair

damaged TV cabinets. The danger here is the hardeningcatalyst that's mixed in with the filler paste. This catalyst isan organic peroxide (methy-ethyl-ketone peroxide -MEKP). A bodyfiller kit I have to hand contains only anincomplete warning in extremely small print.

A spot of this MEKP catalyst in the eye will at oncebegin to destroy the sensitive eye tissue, causing eitherimmediate or eventual blindness. The recommendedprocedure if you have such an accident is to wash the eyewith copious amounts of water for at least ten minutes.This must be done within three to four seconds otherwisepermanent eye damage will occur. There is no knownchemical neutraliser. Thus it makes sense always to wear apair of properly fitting safety goggles and to have plenty ofwater to hand whenever you use fibreglass fillers.

In fact it cannot be too strongly emphasised that youshould wear your safety goggles when using any kind of


glue, especially those that need added hardeners andsuper glue.

Aerosol cleaning fluids, freezers, circuit varnish andspecial fluids to clean audio and video heads are found invirtually all TVNCR workshops. None of these will doyour eyes any good if the spray or liquid reaches them.Safety goggles are essential protection when using theseproducts.

Lasers

Some domestic electronic equipment, such as the CDplayer, incorporates a laser. A stick -on label on thechassis - it should never be removed - warns the TV/videoengineer. Provided the manufacturer's service procedures

are followed all should be well. But take care whenservicing such equipment. The laser beam should never beviewed directly - it will cause eye damage.

In Conclusion

Finally, if you should be unfortunate enough to sufferany kind of eye injury, or get some foreign body in youreye, immediate qualified medical attention should besought.

The information provided in this article is not intendedto alarm or scare readers but perhaps to prevent someonefrom suffering some injury or accident to his eye(s). If itsucceeds in this aim, the article will have been well worththe research and writing.

Servicing Compact Disc PlayersPart 7

This month we continue our account of the data frameformat used with the compact disc system. The next itemto consider is the eight -bit subcode word that's added toeach frame following the sync word. Just to refresh yourmemory, the data recorded on the disc consists of asuccession of frames each of which have 588 data bits.Each frame contains six left/right audio samples, P and Qparity check words, the frame sync and one subcodeword. The composition of the frame was shown in Fig. 11,Part 5 (page 694, July).

The subcode contains data to control the player's LCdisplay. It also contains the cyclic redundancy check code(CRCC) data, which is used to detect and correct anyerrors within the subcode. Before we go any farther, let'ssee how the subcode data is processed.

Processing the Subcode

Although the subcode section of each frame consists ofeight bits it's not in fact an eight -bit word. Each of theeight bits is one part of a much longer (96 -bit) word that'sspread over a number of frames. Thus as the subcode datais detected by the player it must be stored until enoughdata is available to recreate the 96 -bit words. Duringplayback the decoder locates the eight -bit subcode in eachframe, extracts it and stores it in a RAM. When 98 frameshave been played, this RAM will hold 98 subcodes - seeFig. 1. As shown, each word has a length of 98 bits, but asthe first two eight -bit subcode symbols are subcode syncthe usable word consists of 96 bits. The subcode sync isrequired because, with the subcode symbols beingcontinuously extracted during playback, something has totell the decoder when a new word is about to start. Thetwo sync symbols are of a particular pattern that'srecognised by the decoder. As a result the decoder clearsthe RAM and begins to load new data at the start of thethird subcode symbol.

The rate at which these words are formed andprocessed is very fast. With 7,350 frames per second and98 frames per subcode block, there are 7,350/98 = 75blocks per second. So the central processor is receiving 75data blocks per second, each one containing eight 96 -bitwords.

What do these words say? In the CD specification the

Joe Cieszynski

letters P, Q, R, S, T, U, V and W have been allocated toeach bit of the subcode. When 96 eight -bit symbols havebeen collected in the RAM we have words that arelabelled P, Q, R etc. At the present time only the P and Qwords contain any data. The others are reserved for futuredevelopments in the system. A word of warning: don'tconfuse the P and Q subcode words with the P and Qparity words discussed last month. They are quite dif-ferent and the name similarity is unfortunate.

The P Word

The P word informs the microcomputer chip when amusic track is about to start or end, enabling it to take theappropriate action such as mute on/off. The word has twostatements: when music is playing P = 0, whereas whenmusic is about to start or end P = 1. Thus when a musictrack is about to end P goes to one for about two seconds.The end of this one period marks the start of the nextmusic track. During the lead-in track (table of contents) Pgoes to one, the end of this one indicating the start of

FramesI 1

I 2

3

4-95

96

97

98

Subcode symbols8 bits

PO RS T U V W

PPR S T U V W

P 0 R S T U VW

PORS T U V W

P Q R S T U VWPPR S T U VW

} Subcode sync

98-bit words

Fig. 1: A subcode block stored in RAM.

Stored in RAM

Subcodesync

2 bitsControl

4 bitsAddress

4 bits0 data72 bits

CRCC

16 bits

98 bits

Fig. 2: 0 word composition.

1M)

IC267I


music. During the lead -out track P toggels between zeroand one at about 2Hz, telling the microcomputer toinitiate the stop mode (unless it has been programmedotherwise).

The ones between tracks can be used for track search,enabling the player to locate a particular track of theuser's choice. If for example you wish to skip two tracksthe microcomputer will look for the one signals and beginplaying when it reaches the third one. Although this is afeasible approach it's not often used because themicrocomputer may not realise which part of the disc it'sactually dealing with, making track search in this wayrather limited. Any player of even modest quality employsa more sophisticated search technique that makes use ofthe Q subcode data - we'll consider this later in the series.

The music start flag can be inserted between pieces ofmusic that fade into one another. In this case the Psubcode will carry the flag two seconds before the end ofone track, enabling you to miss the following track in thesearch mode if you so wish. As the subcode is not part ofthe audio data there's no audible interference.

The Q Word

The Q word consists of a number of sections as shownin Fig. 2. These are as follows:

(1) Subcode sync. We've already explained the function ofthis.

(2) Control. This tells the microcomputer chip if the discplayer has (a) two audio channels without pre -emphasis,(b) four audio channels without pre -emphasis, (c) twoaudio channels with 50psec pre -emphasis or (d) fouraudio channels with 50psec pre -emphasis.

(3) Address. This carries the data required by themicrocomputer to enable it to function.

(4) Q data (see Fig. 3). The make-up of this is highlycomplex. When decoded by the microcomputer it gives:

(a) Track number - the number of the music trackbeing played.

(b) Index. This is required only when more than onedisc is being used to form an album. The disc's numberin the album is displayed on the LCD.

(c) Playing time. This is the time that has elapsedduring a particular track. It's reset to zero at the start ofthe next track.

(d) Separation - this section contains no usable data.

(e) Running time. This is the elapsed time from thestart of the disc. If a track has been skipped the runningtime displayed will be the time that would have elapsedif the skip had not taken place. This data can alsoindicate the number of tracks that have passed up tothe present time, including any that have been skipped.

Table of ContentsThe table of contents information is also contained in

the Q data. As you may recall, this track appears at thestart of the disc and is automatically read by the player as

TrackMm Sec Frame

Sep

MM Sec Frame

numberIndex

Playing time Running time

Fig. 3: Make-up of the 72 -bit 0 data.

soon as the disc is inserted. Its information tells thecontrol microcomputer the number of tracks on the discand the length of each one. This information is used in thetrack search mode to enable the player to locate a track ofthe user's choice quickly.

CRCC

Last month we considered the problem of incorrectdata during music passages, describing the ways in whicherrors can be detected and corrected. Errors can alsooccur in the subcode of course. The cyclic redundancycheck code data included in the subcode enables these tobe corrected.

The way in which this is done is highly mathematicaland makes the CIRC principle we looked at last monthappear simple! Basically what happens is that the 0 databits are multiplied by another binary number duringencoding. Dividing the Q data in the microcomputer bythe same number during playback should restore theoriginal information. If there's enough data for themicrocomputer to decipher what the original basicallywas, it can correct the Q subcode when errors occur. LikeCIRC, CRCC is effective until a large amount of data hasbeen corrupted.

Other Subcode WordsAs previously mentioned the R -W subcode words don't

at present contain any useful data. The designers have leftthe space provided by these words for system expansion,and will use it as and when necessary - one hopes afterinternational agreement, which is likely since Sony andPhilips have a tight control over the system. Whenever Ihave the opportunity I ask manufacturers whether thereare any concrete proposals for the use of these subcodewords. They usually look at the floor and mutter some-thing like "nothing definite yet". At the time of writing itseems that the most likely use is for controlling a VDU,but it's not clear what the VDU would display!

What Next?In these last three instalments we've looked at the

theory of compact disc data encoding. This provides agood introduction to the operation of the decoder, whichwill be our next subject. Looking further ahead, this basictheory will be relevant when we come to filters, over -sampling, the disc servo, track search and central controlprocessing. Furthermore as conversion of the familiaranalogue TV signal to digital form for processing invarious ways becomes more common, this theory will beseen to have wider relevance. Finally a word of comfortfor those who may be finding all this theory a bitoverwhelming. Didn't PAL colour seem very complexwhen it first came on the scene? Didn't you go hot andcold the first time a VCR came in for repair? Yetnowadays all this is commonplace. Likewise sampling,quantisation, A -D conversion, eight -to -fourteen modula-tion and CIRC will before long all be part of the day-to-day job. It's not as bad as it sounds!


ServiceBureau

Requests for advice in dealing with servicing problemsmust be accompanied by a £2 cheque or postal order(made out to IPC Magazines Ltd.), the query coupon and astamped addressed envelope. We can deal with only onequery at a time. We regret that we cannot supply servicesheets nor answer queries over the telephone.

SONY SLC20The initial problem was a regular sudden increase intake-up tension at a rate of about three-four times asecond. This produced wow on music though speech wasjust acceptable. With the top cover removed the tape loopbetween the capstan and take-up spool could be seenjerking. The problem has got worse and now the take-upfails completely towards the end of a cassette.

There are two possibilities here. First check whetherthe take-up turntable spins freely by hand with thebrakes off. If not, check whether its nylon bearing isloose in the brass tube. Where necessary the bearing canbe pushed down and the tube squeezed. Alternativelythe cause of the trouble may lie in the drive system.Replacement of the pendulum arm assembly X-367-911-43 and rotor X-262-220-13 often cures the problem.After the repair has been carried out RV309 on boardSS16 must be set for 80g/cm. This is difficult withouttorque test cassette SL -0003C.

PIONEER SV2801

The problem is with the teletext function. If the teletext ismixed with the picture it works except that the text isblack. By itself you get only a bright green screen.Selecting subtitles (page 888) locks up the teletext.

First check transistor TV36 (BC548B) on the decoderpanel. Then if necessary transpose the connections topins 7 and 8 of BV06 on the text panel. If the fault nowappears in red, the SAA5040 chip is the most likelyculprit. If there's no difference the U4606B chip issuspect.

HITACHI VT64There's no mention of lubrication in the service manual.I'd welcome guidance on this.

The manufacturers consider routine greasing or oilingof the deck to be unnecessary. In practice we find thatone small drop of light machine oil is permissible on anyshaft that squeaks while a touch of light (we usegraphited) grease is often required at the bottom tip ofthe capstan shaft.

FERGUSON TX90 CHASSISThis set works perfectly apart from the presence of teletextlines at the top of the picture.

First check that the 95V supply is correct at pin 5 of theline output transformer. If so check D106, D107 and C171before suspecting the field output transistors TR104 andTRIOS. If the latter have to be replaced they must be of

exactly the correct type, preferably sourced fromFerguson.

GRUNDIG CUC2401 CHASSISThis set goes into the standby mode after about half anhour. Operating the on/off switch or the remote controlunit will restore normal results for about a quarter of anhour, then it's back to standby. Use of heat and freezer hasfailed to reveal any cause of the fault.

There are several possibilities for this fault in these sets.First check R641 (100ka) and the condition of andconnections to R631 and R632. If these items are in orderthe next suspects are R661 (1.5,0) and C661, then theTDA3640 chip IC665.

FERGUSON 3V23The problem is overloading when prerecorded tapes andtapes recorded on other machines and cameras are playedback, i.e. whites tend to go negative and there's hum onsound that varies with the intensity of the negative whites.The playback level control in the video circuit has been setas low as possible and the odd thing is that the machinerecords and plays back its own tapes normally.

It's likely, but check, that the signal level at the videooutput socket is correct (1V pk-pk) or low. If so theproblem is in the u.h.f. modulator and can be cured byvery careful adjustment of the small preset potentiometerinside. No details of the modulator are given in themanual.

AMSTRAD VCR4700This machine seems to work quite well but is rather noisyon playback - best described as a cyclic clattering in thecassette region. The noise is no longer present to any extentwith the cassette removed and the sensors disabled. Re-wind is also a bit noisy but fast forward is reasonable.

There are two reasons why the VCR4700 is noisier thanmany VCRs. First it's a "cost effective" design, andsecondly it uses pinion rather than idler drive to the reels.Ensure that the cassette cradle bottom plate is not bent ordamaged and that the reel turntables are perfectly free torotate. Grease the reel drive pinions with a light graphitegrease.

PHILIPS G11 CHASSISThis set can be tuned in correctly using the pushbuttons onthe front panel but when the remote control handset is usedto change channels all the stations go off tune, some ofthem quite considerably.

We suggest that you check the alignment of the a.f.c.coil L5630 in the U5600 vision detector module, then ifnecessary check the operation of transistor T5060, ensur-ing that field sync is being received via R5062.

SAMSUNG C1514FThe problem with this set is that R428 (1.3k1i, 2W) andthe starter transistor Q403 (KTC2229) burn out after a fewweeks. We've been unable to find fault with any of theassociated components.

It's almost certain that the set is trying to run continu-ously on its start-up system. Normally Q403 works foronly a second or two at switch on, i.e. until the 16.5V lineis established. Confirm that 16.5V is developed at theanode of D405, then suspect D405 and D401. The lattershould be reverse -biased after start-up, relieving 0403.


[TESTCASI411

321Each month we provide an interesting case of

TV/video servicing to exercise your ingenuity.These are not trick questions but are based onactual practical faults.

The causes of intermittent faults in VCRs can be verydifficult to trace. Given an adequate fault descriptionhowever such problems can often be sorted out withoutthe technician actually seeing the symptoms. This appliesparticularly to "borderline" conditions like excessive backtension, insufficient take-up torque and tape pathproblems.

It was with reasonable confidence then that Johnconfronted a Sharp VCR, Model VC7700, that arrived onthe bench with a ticket bearing the comment "sometimesgoes to stop during play or record, depends on make oftape". A very common cause of this problem is low take-up torque, so this was the first check made. It came out at110g/cm, which is within the maker's tolerance. Themachine was then set to run on soak test while otherrepairs were attended to.

An hour later a click and whirr of machinery signalledthat the fault had appeared. John set the machine toplayback again and settled down to watch the mechanism.After a minute or two the reels stopped and a few secondslater unthreading occurred. Clearly the controlmicrocomputer chip was responding to a lack of reelsensor pulses. What might stop the reels turning? Thetake-up torque was checked again and found to be over100g/cm. So the machine was once more returned to theplayback mode. After a run the tape again stoppedmoving and the machine went into the stop mode. Thistime however the deck was being closely watched. As aresult, two important clues were obtained. First, the headdrum continued to rotate until the unthreading was com-plete. Secondly no slack loop of tape developed down-stream from the capstan. Indeed all the tape throughoutthe deck stopped moving.

By the time these points had been noted the deck wasback in the stop mode of course. The first possibility thatoccurred to John was that the capstan motor was stoppingsporadically, perhaps due to a dead spot in its commuta-tor. In fact this was highly unlikely once the motor was upand running, and further tests and observation from belowshowed that the capstan motor continued to run after thetape had stopped. So did the belt and capstan flywheel.

Thus the capstan was turning while the tape stood still.When he asked around the workshop fraternity Johnlearnt that excessive back -tension could cause this, ascould too much friction around the lower drum. Heinserted a back -tension gauge cassette into the machineand watched the dial. It registered 27g/cm, which is within

the range specified in the service manual. Then a funnything happened: the tape stopped moving and the gaugeactually dropped back. Certainly the fault was not due toan excessive back -tension setting.

How do you check for friction around the lower drum?By now the machine had started to behave itself for longperiods (don't they always?). A rough check on before -and -after drum tension was carried out by deflecting thetape with a plastic rod just upstream of the entry guideand just downstream of the exit guide. Certainly the tapewas tauter after the exit guide, but to some degree this isto be expected.

In view of this another possibility occurred to John -that the pinch -roller pressure was insufficient. To checkthis you have to fool the machine into thinking that it's gota cassette in then select play and heave on a spring -typetension gauge, looking for a force of about 1 kg at the lift-off point. As he set up this test John saw what the troublewas - not the pinch -roller spring pressure! Any ideas? Seenext month for the answer.

ANSWER TO TEST CASE 320- page 778 last month -

Last month's test case concerned a Sanyo VHR3100whose tuning memory didn't work. The seek processoperated correctly, but as soon as an attempt was made tostore the tuning point data this was lost. Much time wasalso lost in unnecessarily changing chips and panels toarrive at a diagnosis that was perhaps obvious.

The type of EAROM used in this and many similardesigns operates with serial data fed via a singlebidirectional port, the addresses being defined and theoperation synchronised by the main microcomputer chip.The memory chip is non-volatile and requires a negativesupply of about -30V to erase (over -write) the data italready holds. Under all other circumstances, includingcomplete loss of operating power, the data is held securelyand without corruption.

The fault lay with the -30V line of course - as wasclear from the dimness of the fluorescent display, which isoperated from the same negative voltage source. In factthe line was at only -15V. It comes from the seriesregulator transistor Q5003 in the power supply section, allthree of whose electrodes were found to be at around-15V. The associated resistor R5008 (4711) was open -circuit, the voltage that was getting through arriving viaQ5003's base -emitter junction and R5006/7.sNiuwww

QUERY COUPON Available until 20th September 1989. One coupon, plus a f2 (inc. VAT) cheque or postal order, must accom- pany EACH PROBLEM sent in accor-

dance with the notice on page 862.TELEVISION SEPTEMBER 1989 NNEEms

Published on approximately the 22nd of each month by IPC Magazines Limited, King's Reach Tower, Stamford Street, London SE1 9LS. Filmsetting byTrutape Setting Systems, 220-228 Northdown Road, Margate, Kent. Printed in England by the The Riverside Press Ltd., Planet Way Whitstable, Kent. SoleAgents for Australia and New Zealand - Gordon and Gotch (Nsia) Ltd.; South Africa - Central News Agency Ltd. Subscriptions: Inland £20, overseas (surfacemail) £24 per annum, payable to Quadrant Subscription Services Ltd., Oakfield House, Perrymount Road, Haywards Heath, Sussex RH16 3DH. "Television" issold subject to the following conditions, namely that it shall not, without the written consent of the Publishers f rst having been given, be lent, resold, hired outor otherwise disposed by way of Trade at more than the recommended selling price shown on the cover, excluding Eire where the selling price is subject tocurrency exchange fluctuations and VAT, and that it shall not be lent, resold, hired out or otherwise disposed of in a mutilated condition or in anyunauthorised cover by way of Trade or affixed to or as part of any publication or advertising, literary or pictorial matter whatsoever. ISSN 0032-647X.


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This practical servicing book is specifically aimed at repair and servicetechnicians and engineers; students and enthusiasts should also find it

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Based on many years of practical bench and field experience, the book haslittle regard for theory and circuit explanation, well covered elsewhere: Herethe emphasis is on the practical, nuts -and -bolts business of fault diagnosisand repair.

Seventeen chapters are individually targeted on separate aspects of theequipment, dwelling longest on the most troublesome sections: TV powersupplies, line timebases, and video deck mechanics. Other chapters look attest gear, intermittent faults and repair techniques. Of the 225 illustrations,fifty four are off -screen photographs and thirteen are fault-finding charts.

A symptom index is included for easy reference to this storehouse of practicaladvice straight from the repair bench.

EUGENE TRUNDLE is a full time practising TV and video engineer. Hisarticles appear regularly in Television and several other magazines. He is theauthor of the best-selling Newnes TV and Video Engineers Pocket Book andNewnes Guide to TV and Video Technology.

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SUMMERBARGAINS

W. TREE TRADE TVUnit 1, Sunshine Mills

Wortley Road

Leeds 12

INCREASE YOUR PROFIT

DON'T (11;61IURTT

TEMPERATURE)

EX-RENTAL VIDEO

& TV WHOLESALERS

BI -TECHSCOTLAND'S LARGEST

WHOLESALERS* A good range of text working and off the

pile including Decca 80's and 100's, Doric3's, 3A's and 4's, Finlandia, GEC, K30,KT3, G1 1's, Grundig, Hitachi, ITT, JVC,Panasonic, Philips KT30-3-45 stand andtext.

* Various makes of video always in stock* Working TVs from £20

Contact:Jack SwanBI -Tech(Scotland) LtdUnit 9Colquhoun AveHillingtonIndustrial EstateGlasgow GS2 4BN

TEL: 041-883 2610

TV LINE OUTPUT TRANSFORMERSPRICES INCLUDE VAT & CARRIAGE

VIDEO HEADS, TRANSISTORS, IC's, ALSO STOCKED.

BAIRD: 8290, 8752, 8773, 8180 12.00

RANK BUSH MURPHYA774 with stick rectifierA816, T16, 118, Z712, 7715120, T22, T26, Z179, A823

9.78

10.35

11.50

ITT: VC200 to VC402 9.70CVC1, CVC2 IFORGESTONE) 11.50CVC5, CVC7, CVC8, CVC9, CVC20 10.35CVC25, CVC30, CVC32, CVC45 920CVC800, 1100, 1150, CVC40 P.OACVC1200, 1204, 1210, 1215, 2600 P.OA

DECCA: 1210, 1211, 1511

1700, 2001, 2020, 2401, 2404

CS1730, 1733, 1830, 1835

30, 70, 80, 90, 100120, 130, 140, 160

11.50

9.20

9209.20

P.OA

PYE: 169, 173, 569, 368CT200, CT200/1, CT213725-731, 735, 737, 741

9201025

9.78

FERGUSON, THORN: 1590, 15911690, 1691. built in rect1600, 1615, 1700, 1790

3000, 3500, 8000, 8500, 88009000, 9200, 9300 series

9500, 9600, 9650 seriesTX9, 1)(10,1)(90, TX100, TXP5MOVIESTAR 3781, 3787, 8180TX10 focus unit

9.20

9.78

P.OAP.OA.

12.00

12.00

P.OA12.00

10.87

PHIUPS: 170, 210, 300 920320 series 9.78TX, 18, TX2, TX3 mono P.OAG8 and G9 Series 920KT2. KT3. series 9.20CTX G11. K30. K4. K40. split diode P.OA.K12, CFI, 2A, 2B, 3A, NC3 P.OA

RDHITY: FTV12 monoD(2000 D(3000 14", 16", 20"D(3000 22"

10.35

16.43

2728

REDIFUSION Mkl to 5 P.OADORIC Mk3, Mk1 11.50SONY KV 1400, 1612, 2000 P.OAGRUNDIG, G.E.C. P.OANORDMENDE: 8290, 8180, Z306 P.OA.SANYO: 5101, 5103, 7118, 7130 P.OASHARP: C1851H, C2051H, 1405 P.OAHINARI: CT4, CT5 P.OATANDBURG: 190, CTV2, C1V3 P.OATELEFUNKEN: most models in stockHITACHI: 1471, CPB260, 2501 P.OASAISHO MATSUI SENTRA P.OA

CASED AUTO TRANSFORMERS

240V to 115V USA 2 PIN SOCKETSize

1000 watt500 watt300 watt

Price48.30

287525.30

TOROIDAL TRANSFORMERS WOUND

Delivery by return of post.

Tidman Mail Order Ltd.,236 Sandycombe Road,

Richmond, Surrey TW9 2E0.Approx. 1 mile front Kew Bridge.

Phone: 01-948 3702Mon -Fri 9 am to 12.30 pm &

1.30-4.30 pmSat 10 am to 12 noon.


All Idlers are Manufacturers Original. VIDEO "REFURB" KITSHITACHI VT9000

SeriesPlay Idler 4.35Play Pulley 0.90Belt Kit 1.50Pinch Roller 3.95

FISHER

IdlerBell KitPinch Roller

FVH-P615

4.951.953.95

HITACHIF/F Rewind Id.Wind Roller.Reel TableBelt KitPinch Roller

VT8000 series3.950.802.451.503.95

FERGUSON 3V29/30 FERGUSON 3V35/39Take Up Idler 1.85Reel Idler 2.75Take Up Clutch 2.75Belt Kit 1.95Pinch Roller 3.95

Take Up Idler 1.85Reel Idler 3.25Take Up Clutch 2.80Belt Kit 1.75Pinch Roller 3.95

,£.14185 ,E.10:70 -1.12t5-f_1325 113:511

KIT 1 £10.75 KIT 2 £10.85 KIT 3 £8.95 KIT 4 £10.85 KIT 5 £9.45

PANASONIC NV20002010

VXP 0329 Idler 0.95VXP 0331 Idler 0.95Belt Kit 2.25Pinch Roller 3.95

PANASONIC NV7000PANASONIC NV370/830/HITACHI VT11/17/ PANASONIC NV300/333

VXP 0521 IdlerBelt KitPinch Roller

850

3.951.953.95

SeriesVXP 0343 Idler 4.95VXP 0344 Idler 0.95Belt Kit 1.95Pinch Roller 3.95

19/33

F/F Rewind Id. 2.75Belt Kit 2.95Pinch Roller 3.95

VXP 0433 Idler 4.95VXP 0401 Idler 1.05Belt Kit 2.95Pinch Roller 3.95

_MAT_sett £.14-1650:65 5.-1rIti

KIT 6A £7.95 KIT 7 £10.75 KIT 8 £7.95 KIT 9 £6.95 KIT 10 £9.15

SANYO vrc5000 ORDERING:Please add 50pPost & Packing

Then add 15% VATC.W.O ONLY

Sorry!Trade Only

SHARP VC9300/ SHARP VC381-390

Idler 0005 3.50Belt Kit 1.95Pinch Roller 3.95

Idler 0005Belt KitPinch Roller

9500

1502.503.95

As above butincludingClutch

Mechanism

Reel DriveReel MotorBett Kit

5.956.950.95

liks5- ..c9vvrtsams

KIT 6B £17.50 KIT 11 £11.95 KIT 12 £8.50 KIT 17 £8.25

VOLTAGEREGULATOR ICs VIDEO HEADS=======VIDEO HEADS

EachSTK 5332 3.95STK 5421 3.95STK 5481 5.95STK 5482 5.95

AKAI

VP 7100/7200/9700VP 77-88VSI-2.5

Each

14.5014.5014.50

HINARI

VXL2VXL4VXL5VXL6VXL35V2OH

Each

23.0023.0022.0023.7523.0022.00

PHILIPS Each SOLAVOX Each

VR6420/6460VR6462/3/4

21.5035.00

1000 24.25

SONYSAISHO

STK 7348 4.95ALBA

VR705-805-905VR1000-1600

23.0023.00

C5/6/7 18.95SLC 20/24/30/33/44 21.50STR 441 5.95

STR 451 5.95STR 454 5.95

4.50

4000 24.25

TOSHIBAMATSUI SAMSUNGSTR 4211STR 5412 5.95 AMSTRAD

VX500-773 inc 22.00 VB900-910VX510/20VX616/626/627VX717

24.0024.0024.0024.00

V31/33 9600 22.50V55-57 14.50V71-87 23.00V93 23.00

STR 6020 (kit) 5.95STR 50103 * 5.95STR 58041 6.95

' R2M AVALANCHEDIODE £1.00 Pk of 5

4500/52004600/470070009000

22.0023.7523.0023.75 MITSUBISHI

.-1S303/304HS320r1S700HS300/1/2

28.0028.0028.0032.50

SHARP TRIUMPHFERGUSON

VC200/VC300/3300381/4/5f7NC388477/481VC220VC581/3/5VDCD9R300mu/9000500/19700

21.5021.5021.5021.5021.5021.5039.50

VR9500 23.00VR9501 23.00VR9592 23.00

ANY

REELMOTOR

3V00 -3V223V29 (P.C.B. or3V23/35-393V323V483V44/45/54/55

14.50"L") 14.50

14.50

38.0038.0024.50

ORION

VH 2500-2948 inc.VR 2949-821 inc.

23.0023.00

Suitable for FIDELITY SANYO 3 HEADSVTC9100/9300VTC5000/6500VTCM10/11/21121HR 1100/1300

35.0029.5029.5039.95

LESS5%

PANASONICAMSTRAD 1000 24.00

NV2000/3000/7000/8000 14.50

NV300/332/33 14.50NV230/260/270/280 21.50NV470/480/NV100 21.50NV370 NV380 21.50NV330NV366

2.9531.50

NV430/460NV730

3231..5050NV777 27.95NV788 46.00NVG10/12/14 23.50NVG18 41.75NVG21 46.00NVG30 30.00NVG40 30.00

VR7000 FISHER

SAISHO FVHP 420-910 (inc.) 24.00

SENTRAVR705-805-905

GEC HITACHI8000 24.25

SHARP

VC381 /3/6VC2300/3300/91 009300/9500/9700

5000VT6500/8000/9300VT11/33VT17/19VT35/38/39

23 -5022.50

22.50390039.00

V.A.T.

IRWINUNIT

BURTON

Telephone

Reg. No.

200,RD.,

127

ELECTRONICSJ.C.

Sheffield

2207

SHEFFIELDALBYN

01

(0742)

COMPLEX,S3

739622

8BX.

(Est. 1973)

GOLDSTAR£13.95 each

4000 Series 24.258000 24.25


QUALITYQUALITYQUALITY

IGHSrGE-

IN THE HEARTOF THE SOUTHJUST OFF A24NEAR HORSHAM

ALL TRADE GOODS GUARANTEED AND EXCHANGED IF REQUIRED.

ALL GOODS READY FOR SHOWROOM.

* WORKING P.I.L. TYPE TVs FROM £15 * ELECTRONIC TYPE VIDEO RECORDERS FROM £70* TELETEXT TVs INC. HANDSETS FROM £65.

LOW PRICES FOR MARKED STOCKNON -GRANADA STOCK T20's/22's £20.00

THORN, SHARP, HITACHI CRT's GUARANTEED OKEXAMPLES LOADS IN STOCK

8300 £709300 £80 MANY MANY MORE MAKES & TYPES IN STOCK381H £85 FREE SPARES PACKAGE WITH 20+ UNITSVT11 £75

NORMAL GRANADA STOCK ALSO AVAILABLEMk 3's, 3A's, 4's etc

ADVANCE ORDERS TAKEN ON ALL STOCK

IIGHSCIRGE

ReconditionedMicro Wave Ovens

from £30 + VATTelephone Dave or Alan between 9 & 5.30 Weekdays,

9 till 1 Saturdays0403 732966

OR MOBILE 0860 22799524 HOUR ANSWERPHONE

Rear of UNIT 31, STATION ROAD INDUSTRIAL ESTATE, SOUTHWATER,NEAR HORSHAM WEST SUSSEX

CREWE WHOLESALE TELEVISIONCHESHIRE'S LARGEST WHOLESALERS OVER 18,000 SQ. FT.

15 MINUTES FROM JUNCTION 17. M6

(Including hundreds of text working and off the pile) G11's, G11 Text, Bush T-20 upwards,Finlandia, G.E.C., K30, KT3, Grundigs, ITT's, Trimlines, 800, CVC 40 and 30's, Decca 80's and100's, Doric 3's, 3A's and 4's, and cable with translators. Philips KT30 -3 - 45 stand & text.

LORRY LOADS DIRECT FROM SOURCEVIDEOSVHS - Mechanical Hitachi

Electronic Nat/pan, HitachiSharp and Thorn

50 Mixed of your ITT30/32choice Decca 80's and 100's AT £250.00 + VAT

Doric series 3 GUARANTEED UNTOUCHEDGEC 2110/2111

RING NOW FOR THE LATEST PRICES ON TV's & VIDEOS

BETAMAX - Sony, Sanyo,Toshiba, etc.(Working or untouched)

CREWE WHOLESALE TELEVISION (2 lines)

Williams Street Warehouse, Crewe, Cheshire. sia 0270 582924


THE A.V.S. GROUPAUDIO VISUAL SERVICES

HERE'S JUST A SELECTION OF OUR SUMMER PRICES!

UN -SERVICED

9000ETC

£8

TX9/10

£20

TX9/1 0TEXT

£39

TX9/1 0TEREO

£59

NONTHORN

TV'sFROM£10

SERVICED

9000ETC

£12

TX9/10

£29

TX9/10TEXT

£49

TX9/10STEREO

£69

NONTHORN

TV'sFROM£15

UN -SERVICED

MECHVCR's

£25

3V30

£45

F/LOAD

£50STEREOVCR's£60

NONTHORN

TV'sFROM£40

SERVICED

MECHVCR's

£40

3V30

£65

F/LOAD

£65STEREOVCR's£80

NONTHORN

TV'sFROM£50

TRY US ONCE AND YOUWILL BE HOOKED -THAT'S A PROMISE!

I DON'T SERVE PORRIDGEI DISH OUT GOOD DEALS!

SAMSUNG VIDEO PLAYERS

NEW WORKING GRADE 'EV£80 ea. (E75 ea in lots of 10)

ALL PRICES ARE SUBJECT TO 15% VAT. PRICES ARE ALSO BASED ONQUANTITY AND AVAILABILITY HANDSETS CHARGED EXTRA.

HEAD OFFICE ET 08444 3226 08444 2995

36 WYCOMBE ROAD, PRINCES RISBOROUGH, BUCKS.

HUMBERSIDE OFFICE 23) 0652 660242 0652 660243UNIT 8, ST. MARY'S WORKS, MARSH LANE, BARTON-ON-HUMBER, SOUTH HUMBERSIDE


NGKELECTRONICS

UNIT 18,TILE CROSS TRADING EST.TILE CROSS ROAD, MARSTON GREEN,BIRMINGHAM 1333 ONW.

THORN EX -RENTAL SETS FULLY RECONDITIONED & GUARANTEEDGOOD RANGE HELD AT KEEN PRICES - PHONE FOR DETAILS

!!! TRADE SERVICE AVAILABLE !!!on all makes

4343 *o c) 441 4)44 o P.P.A.43 4t44444)

zeroer

4.z. .:144vQ

EXPORT ENQUIRIES WELCOMERING: NORMAN, GLORIA OR PAUL

021 779 5734021 779 5465021 779 5466

FAX: 021 779 4701TRADE ONLY

-41 CITY

TEST FACILITIESSPECIAL DEALSON NEWSTOCK

WE AREHERE

4,41:10 I IHIGH ROAD IA 10)

SEVENSISTERS

TUBE

0

M25

247-249 HIGH ROAD,SEVEN SISTERS

TOTTENHAM,LONDONN15 5BT

Access

TOP

BRAND NAMES

JVC, HITACHI,PANASONIC, PHILIPS,

FERGUSON, GRUNDIG etc.

OFF THE PILE STOCK AVAILABLE

CONTACTPAUL ANDREAS

01-809 4866OPEN 9.00 AM - 7.00 PM

MOAt1_1112W3fECIMPTAY


STAYINTUNE

28/29 RIVER STREET DIGBETH

CNN- grooeTV and Video Trade Centre

TEL: 021 772 2733BIRMINGHAM B5 5SA FAX: 021 766 6100

Everything under one roof in Birmingharns largest TV & Video Warehouse

Ex Rental TV'sall working stock

Bush T20 £15.00Bush T24 £25.00Doric Mkl £5.00Doric Mk3 £10.00Doric Mk4 Text £45.00Finlandia Basic £10.00Finlandia R/C £18.00Finlandia Text £40.00Grundia Basic £35.00Grundig R/C £50.00Grundig Text £70.00JAPANESEHitachi, Sony, Panas. £30.00Korting £10.00Philips G11 Basic £10.00Philips Gil R/C £20.00Philips G11 Text £35.00Philips KT3/30B £25.00Philips KT3 R/C £35.00Philips KT3 Text £55.00Thorn 9K £12.00Thorn 9.6K £18.00Thorn TX9 Basic £25.00Thorn TX9 Text £55.00Thorn TX10 Basic £25.00Thorn TX10 R/C £35.00Thorn TX10 Text £55.00Thorn TX9/10 Stertext £75.00

Ex Rental Video'sAmstrad 7000 £65.00Thorn 8930 f 3V29/ £65.00Thorn 8924 f 3V23/ £65.00Thorn 8940 £70.00Thorn 8941 f3V311 £90.00Thorn 8942 (3V321 £100.00Ferguson longPlay £150.00SharP VC9100/9300 £80.00SharP VC 381/383 £85.00Hitachi VT8000/8500 £60.00Panasonic NV333 £65.00Panasonic NV366 £75.00Panasonic NV7000 £75.00Panasonic NV 7200 £85.00Panasonic NV370 £95.00

PorWaiagiaCassette

B Stock

MiDi Systems

B Stock'err-

14"R/C Portable

£98Autofocus

Autozoom

£4251

Ferguson 3C01

Ex Rental FergusonVideo

£150Longplay

3V43 HiFi Video

Box 50 £1.35

HunnyuE180 Videotapes

Lifetime Guarantee

3V29/30

£65

Microwaves

B Stock

£69.00

Spares Listing

New Quality VideoheadsSpecial Opening Offers

from £14.50

Semi ConductorsSTR, STK, TDA s. TA etc.

PIDE0'6 FOGS GPfiREE,PRIME. FROM MC,

UNBEATABLEP.O.A.

Thorn TX10 Brand New Chassis from

£20.004.64. 44.eie smaseet mune

Sftecialzsed Tama28/29, RIVER STREET,DIGBETH, BIRMINGHAM

TEL: 021 772 2733

R/C Handsets are raAll prices are exclusive of VAT

ASK ABOUT OURFREE DELIVERY


AMRICK VISIONSWHOLESALE

THE WORKING SET WHOLESALER YOU CAN RELY ONWE SPECIALISE IN SUPPLYING TRADE CUSTOMERS WITH TOP QUALITY WORKING EX -RENTAL

TV's & VIDEO's. WE OFFER GOOD PRODUCT, FRIENDLY SERVICE & KEEN PRICESTV'S

PHILIPS G11 £18PHILIPS G11 TEXT £45PHILIPS KT3/30 £35PHILIPS KT3/30 TEXT £65THORN TX9/10 £35THORN TX9/10 TEXT £65THORN STEREO TEXT £85BUSH T20/22126 £18

NEW

HANDSETS

FROM £10

NEW

VIDEO

HEADS

FROM El 5

VIDEOSTHORN 3V23 £75THORN 3V29/30 £70THORN 3V31 £90JVC 7200r7300 £70HITACHI 8500/9300 £70HITACHI VT11 £75HITACHI V133 £90SHARP 9300/381 £80AMSTRAD 7000 £70

We also stock Hitachi, Sony, Panasonic, Sanyo, Toshiba, etc.

SPECIAL DISCOUNTS & DELIVERY ON LARGE QUANTITIESOFF THE PILE! COMPETITIVELY PRICED OFF THE PILE EQUIPMENT AVAILA3LE FOR TRADERS WHO REQUIRE IT

PRI E All ri«- t VAT ut incl - han e wher- . r ri .te

AMRICK VISIONS WHOLESALE

113 NARBOROUGH ROAD, LEICESTERAPPROX 5 MINS

FROM JUNC 21 M.1.

ma 0533 551711OPE9NAmN1_60Np-SmAT

ONE AND ONLY

APPROVED THORN WHOLESALER IN MANCHESTERFOR THE NORTH WEST

TRAILER LOADS DIRECT FROM SOURCE ARRIVING EVERY WEEK!RING FOR THE BEST DEAL IN TOWN

NOW OPENElectricvision29 Lonsdale StreetStokeST4 4DTTel 0782 481531744105

0STOKE-ON-TRENT

ROUNDABOUT

WE ARE HERE1 MILE FROMJUNCTION 15

E. X 111=" 4=0 Ft -11-E 4::;* 6-.11 II Ft I E. SW E I 4=1 I%#1 E.ALL PRICES SUBJECT TO VAT & QUANTITY

HUGE STOCKSWORKING & GENUINE

UNTESTED TV'S & VCR'S

YOU HAVE. TO SEE US TO BELIEVE US

95 Langworthy RdSalford

ManchesterM6 5PH

Tel 061 736 6333061 745 8048

MI6 EMEIMEDEg.t/POLI

RA; ..10.

'42/"PRIE ARE MERE


L_

VIDEOREPLACEMENTS

All our replacement heads are brand newprecision Japanese heads not refurbished.

Panasonic3HSS(N) £16.00Fits model numbers:NV2000, NV2010, NV7000, NV7200,NV333. NV8600, NV8610.3HSS-UI(N) £19.90Fits model numbers: NV370 & PhilipsVR6460.3HSS(4N) £38.50Fits model number: NV3663HSS(4NB) £38.50Fits model number: NV730

Ferguson3HSS(V) £16.00Fits model numbers: 3V00, 3V16, 3V22,3V29, 3V30, 3V31, 3V35, 3V36, 3V38, 3V39,HR2200 HR3300, HR3330, HR3360,HR7200, HR7300, HRD120, HR0130.3HSS4VB £44.50Fits model numbers: 3V32.

Sharp3HSS-(SP) £26.50Fitsmodel numbers: VC9100, VC9300,VC9500, VC9700, VC381, VC8381, V(263,VC388. VC482.

ToshibaPS3B(T) £26.50Fits model numbers: V9600, V318, V33B.

Hitachi3HSS(H) £26.50Fits model numbers VT8000, VT9300 etc.SonyPS36(S) f19.95Fits model numbers: SLC5, SLC6, SLC7,SL3000 also various NEC models.P848(2S) £26.50Fits model numbers: SLC20, SLC30 SLC40,SLF1.PS56(35) £44.20Frts model numbers: SLC9, SLT50, SLC8,SLF60.

Amstrad/Saisho3HSS(R) £28.50Fits model nuntieisi VCR7000 and all mod-els using Orion chassis.3HSS(F1) £28.50Fits model numbers: VCR4500, VCR5200,VCR9000 etc.

Fisher/Fidelity3HSS(SF) £29.90Fits infidel numbers: FVHP615, FVHP710,V1000.

VIDEO SPARESALL STOCK ITEMS ARE DESPATCHED BY RETURN OF POST

HEADSGENUINE HEADS

PanasonicNV2000, NV2010NV7000, NV7200NV333, NV370NV366NV688, NV777, NV788NV730All others available P.O.A.

Ferguson

3V29, 3V303V323V35, 3V36, 3V38, 3V39

SharpVC7300, VC7700, VC7750VC8300VC9300, VC9500, VC9700VC381, VC383, VC386VC482All others available P.O.ASanyoVIC 00, VTC5150VTC5300, VTC5400VTC9300

SonySLC5, SLC6, SLC7SL8000, SLJ3080SLC20, SLC30SLC9

ToshibaV9600V8600V31, V33V55, V56

HitachiVT5000, VT5500VT6500, VT8000, VT8300VT8500, VT8700VT9300, VT9500, VT9700VT11E, VT14EVT17E, VT I 9EVT33EPhilipsVR6460VR6462, VR6467Please call if your model is not listed.

3V .3V16,3V22

LARGE RANGE OF REMOTE CONTROL'SFOR TV AND VIDEO

low -mm

THIS MONTH'S:

La SPECIALMI. VIDEO HEADS

3HSS(V) -FITS FERGUSON & JVC

3V00 - 3V16 - 3V223V29 - 3V30 - 3V31

3V35 - 3V36 - 3V38 etc

3HSS (N)FITS PANASONIC 7.

mi. NV2000 - NV2010 - NV3000mi NV7000 - NV7200 - NV333

BOTH AT

im £16 + VAT NoNIL ADD 70p POST & PACKING AIN

GENUINE

Jl ABELT KITS

PanasonicNV2000, NV2010 £6.50

£44.00 NV7000, NV7200 £6.50£44.00 NV333, NV366 £6.50£44.00 NV370, NVI330, NV850 £2.30£64.50 NV688 £6.50£64.50 NV777, NV788 £4.70£67.50 NV8600, NV8610 £6.50

NV730 £1.90NV230, NV430, NV870 £2.80

£59.90NVE170 NV810Ferguson

£280

C59.90£66.90C59.90

3V00, 3V16, 3V223V233V29, 3V30

£6.50£3.904 90

3V35, 3V36, 3V38, 3V39 £290£69.90 Sanyo£69.90 VTC5000, VTC5150 £1.99£62.00 VTC5300, VTC5400 4.50£62.00 VTC9300 £6.50£62.00 Sony

SLC5, SLC7 £6.50SLC6 £1.50

£39.90 SLB000, SL8080 £6.50

£39.90£39.90

SharpVC7300, VC7700, VC7750 6.50VC8300 £6.50VC9100, VC9300, VC9500 £6.50

£49.50 VC381, vruri, VC386 £6.50£49.50 Hitachi£54.50 VT5000, VT5500 £5.50£54.50 VT8000, VT8300, VT8500 £2.90

VT9300, VT9500, VT9700 03.30£59.90 VT11E, VT14E, VT17E, VT19 13.50£69.90 VT33E 0.50£59.90 Altai£59.90 VS9700 £6.50

VS2, VS3, VS4, VS5 94.90

£49.50 VS9300, VS9500, VS9700 £6.50

£49.50 Many others available£49.50£49.50£45.50 CREDIT CARD£54.60 ORDERS BY£49.50 TELEPHONE

RECEIVED BY£44.00 4 PM. ARE£42.90 DESPATCHED

SAME DAY

WE CARRY HUNDREDS OF VIDEO SPARES

INC. PLAY IDLERS, CLUTCHES, MOTORS,SERVICE MANUALS, TENSION BANDS,

BELTS AUDIO/CONTROL HEADS,ALIGNMENT TOOLS AND TAPES ETC.

**SPECIAL ORDER FACILITIES****FOR NON -STOCK ITEMS**

PINCH ROLLERSPanasonicNV2000, NV2010, NV7000, NV7200. £4.95NV333, NV366, NV370, NV430 £4.95NV730 £7.95

Ferguson/JVC3V00, 3V16. 3V22, 3V23 3V24 £4.95HR3300, HR3360, HR3660, HR2200 £4.953V29, 3V30, HR7200, HR7300 £4.953V35, 3V36, 3V38, 3V39 HRD120 £4.95

SanyoVTC9100, VTC9300 £4.95VTC5000, VTC5150, VTC5300,VTC5400 £4.95

ST.(SL , SLC7 £5.95SLC6 £5.95SL8000, 9.13080 £5.95

SharpVC7300, VC7700, VC7750 £4.95VC8300 £4.95VC9I 00, VC9300, VC9500 £4.95VC381, VC383, VC386 £4.95VC651 etc. £4.95

HitachiVT5000, VT5500 £5.95VT8000, VT8300, VT8500 £4.95VT9300, VT9500, VT9700 £4.95VT11E, VT14E, VT17E, V119 £4.95VT33E £5.95

AkaiVS9700 £6.95VS2, VS3, VS4, VS5 £6.95VS9300, VS9500. VS9700 £4.95

TELEVIDEO SERVICESUNIT 3, PLESSEY BUSINESS PARK, TECHNOLOGY DRIVE, BEESTON, NOTTINGHAM NG9 2ND

TEL: 0602-226070 FAX LINE: 01502-43109724HR ANSWERING SERVICE FOR ORDERS PLACED AFTER 5.30 p.m.

Please add 70p post 8 packing and then add 15% VAT to totalOFFICIAL ORDERS ACCEPTED FROM SCHOOLS, COLLEGES, ETC. EXPORT ENQUIRIES WELCOME.

ALL PRICE ENQUIRIES SHOULD BE ACCOMPANIED BY STAMPED ADDRESSED ENVELOPE

LARGE RANGE

0 !Cs& SEMI-

CONDUCTORS

AVAILABLE

FOR TV,

AUDIO &

VIDEO

_J

REPLACEMENTSPanasonicNV2000, NV2010 £3.50NV7000, NV7200 C3.00NV333, NV366 £3.00NV8600, NV8610 £3.95Ferguson3V00, 3V16, 3V22 £3.503V23 £2.903V29, 3V30 £3.503V35, 3V36, 3V38, 3V39 £2.90SanyoVTC5000, VTC5150 £1.00VTC5300, VTC5400 £2.50VTC9300 £4.25SonySLC5, SLC7 £3.60SLC6 £4.95SL8000, 51.8080 £4.25SharpVC7300, VC7700, VC7780 £3.50VC8300 £3.90VC9100, VC9300, VC9500 £3.90VC381, V(:2133, VC386 £3.90HitachiVT5000, VT5500 £4.50VT8000, VT8300, VT8500 £1.50VT9300, VT9500, VT9700 £1.50VT11E, VT14E, VT170, VT19 £3.90VT33E £3.90AkaiVS9700 £3.90VS2, VS3, VS4, VS5 £3.95VS9300, VS9500, VS98C0 £3.50Many others available

SENSOR LAMPSAll Panasonic £1.80All FergusortkIVC £0.65Sharp VC9300 etc £2.90Sharp VC7300 etc £1.80Amstrad 7000 £2.30All Hitachi £1.80

SENSOR LE.D.'sAll Panasonic £2.90All Ferguson/JVC £2.90All Hitachi £5.75

END SENSORSHitachi VT64E £1.20 each

REEL MOTORSSharp VC9300, VC381 etc £18.20Arnstrad/Saisho etc £18.20Panasonic NV333, NV366 £16.80Sanyo VTC5000, 5300, 5400 £9.90Panasonic NV7000, 7200 £19.80

DRUM MOTORSFerguson/JVC 3V00, 3V22, etc. £29.90Sharp VC7300, VC7700 £26.40Sharp VC8300 £26.40Hitachi VT5000 £24.80

CAPSTAN MOTORSSharp VC8300f39.90Sharp VC7300, VC7700 £29.30Ferguson/JVC 3V00, 3V16, 3V22 £24.75Ferguson/JVC 3V29, 3V30 £34.50Feiguscn/JVC 3V35, 3V36, etc. £25.80Hitachi VT5000 £25.80Hitachi VT8000, 8500, etc. £34.50Hitachi VP3300, 9500, etc £34.50Hitachi VT11, VT14, VT17 £28.80Sony C5, C7 £42.90Akai VSI -VS5 £29.90Many, many more!

IDLER WHEELSPanasonicNV2000, NV2010 (Genuine) £2.90NV7000, NV7200 (Genuine) £2.90NV333, NV366 (Genuine) £2.90NV370, NV230, NV430 .. (Genuine) £4.50NV777. NV788 (Genuine) £4.50NV736 (Genuine) £4.50Ferguson/JVC3V00, 3V16, 3V22 (Large clutch) £5.953V00,3V16, 3V22 (Small clutch) £6.953V29,3V30, HR7200, HR7300 £3.903V35,3V36, 3V38, 3V39, HRDI 20 £3.90SanyoVTC9100, VTC9300 £1.90VTC5000 Reel drive pulley £6.50VTC&A10 Reel drive pulley £9.90SonySLCS, SLC7 Rewind kit £4.95SLC6 Rewind kit £4.95ShaVC9

rp,.00, VC9300, VC9500 (Genuine) £3.90

VC381, VC3B3, VC386 (Genuine) £3.90VC482, VC483, VC581 (also Salsho) (Genuine) £3.90VC422 etc. (Equivalent) £2.98VC9300, 381 etc. (Equivalent) £2.98HitachiVT8200, VT8300, VT8500 £4.72VT9200, VT9500, VT9700 £4.75VT1I E, VT14E, VT17E, VT19 £3.96VT33, VT63, VT64, VT65 £3.96Aka!VS2. VS3, VS4, VS5 £4.50ROO/FVHP615, FVHP710, FVHP725, etc. £6.90We also corny all pay idlers and clutches etc. for modelslisted plus many more.


ATTENTIONATTENTIONJOHN CARTER ELECTRICAL LTD

ANNOUNCES A

MASSIVECLEARANCE

SALETVs FROM £5 ONLY

OVER 2,000 SETSMUST GO

TO MAKE WAY FOROTHER STOCK

HUGE RANGE OF VIDEOSAT

RIDICULOUSLY LOWPRICES

ENQUIRIES CONCERNINGB GRADE STOCK WELCOME

DIRECT LOADS DELIVEREDFROM SOURCE

ALL SETS UNTESTED

JOHN CARTER(Electrical) LTD

FURNACE ROAD,GALLOWS INN,

ILKESTON

Phone: 0602 303124

TELEVISIONS - VIDEOS - TELEVISIONS

IEW-TELCO DURHAM

A NEW NAME IN

TRADE SURPLUS TVsLarge selection mainly

THORN - GRANADA STOCK

Discount ten or over

ALL SIZES AVAILABLEThousands in stock. Good quality.

Fresh stock every week.

Portables, Teletext, VHS Videos, STD 2(Y', 22", 26"

Complete loads at discount prices

All stock collected from source by our transport andhandled with care.

131 VIEW-TEL TELEVISIONS(0388) SWAN STREET, EVENWOOD,832832 Nr. BISHOP AUCKLAND, CO. DURHAM.

BLOCK

DISCOUNTING

125011

T.V./Video Recorders Rental AgreementsHire Purchase/Credit Sale Agreements

For details and quotations contact:

BROUGHFAME LTDColonnade House, High StreetWorthing, Sussex BN11 1NZTel: (0903) 821020


rHE ONLY APPROVED THORN TELEPRICE DISTRIBUTOR FORE. ENGLAND

SALESEMPLE ---7-=, SERVICE

GREAT SUMMERTIMEDON'T DELAY GUARANTEED & WORKINGPHONE TODAY EX -RENTAL STOCK

0553766766

59 HALL RDCLENCHWARTON

KINGS LYNNNORFOLK

-_-=

TRADE MARK OFQUALITY

ALL PRICES QUOTED ARE FOR LOTS OF 10 OFF

TV's VIDEOS

9K £12.00 3V30 £62.00TX BASIC... £32.00 3V23 £65.00TX TEXT .... £60.00 3V36 £75.00STEREO £90.00 TOP/L £65.00

(WITH BRAND NEW H/SET) :NON THORN TYPE)

F.S.T. P.O.A. 3V42 P.O.A.

ALL WORKING EQUIPMENT IS SOLD WITHOUR UNIQUE 7 DAY GUARANTEEALL PRICES QUOTED AREEXCLUSIVE OF VAT ****************

Stock items despatched by return

VIDEO HEADSSPECIAL OFFER

FERGUSON AND PANASONIC

UNIVERSAL HEADS (3HSSV

AND 3HSSN) AT £13.25

FOR MOST OTHER MODELS ASK

FOR PRICEVideo Heads for Amstrad, Fisher, Hitachi, Orion,

Saisho, Sharp, Sony and Toshiba also in stock

IDLER ASSEMBLIESSharpVC9300/9500 etc £1.75VC481/581 etc. £1.90VC9300/9500/481/581 etc, Original £3.50

HitachiVT11 33/14/17/19/63 etc £1.75VT9300/9500 etc. Play Idler El 65VT9300/9500 F/F Idler £1.50VT8000/8300/8500/8700 F/F Rew Idler £1.90VT8000/8500 etc. Play Idler Assembly £2.85VT8000/8500 etc. FF/Fiew Pulley £0.70

FergusonTake up Clutch (Mechanical models) £4.953V29/30 Take up Idler £1.203V29/30 Take up Clutch E2.10

3V29/30 Reel Idler £2.503V35 Reel Idler £2.403V35/36/38/39 Take up Clutch £2.00

38118VTC5000/5150/6500 Idler Roller Assembly £1.95VTC5000/5150/6500 Reel Drive Pulley Unit £5.00

PanasonicNV370 Idler Arm Unit (VXP0521) Gen, £2.25NV8600V8610 Play Idler (VXP0243) £0.95NV332/777/788 Idler Unit (VXP0463) £3.95

A.Z. ELECTRICSNV Idler IVXP0515) £3.75NV6300 663 Idler Ann (VXL0997) £3.10W8400/8600/8610/8620 (VXP0245) £0.70NV333/366 etc. (VXP0401) NV700/7200/7800VXP0344) NV2000/3000 (VXP0331)V1P0329) £0

nk Tendon Bands From £1.50

FisherFVHP615 Idler Assembly. Genuine £5.00FVHP615 Gear Idler Assembly £4.35FVHP905/910 Gear Idler Assembly £4.35FVHP520/530 Idler £2.85FVHP520/530 Pulley £0.70

SonySLCS/7 Rewind Kit

VIDEO MOTORSReel MotorsSanyo VTC5000/5150/5300/5400/6500Sharp VC9300/9500 etc. GenuinePanasonic NV333/366, Genuine .Ferguson 3V29/30 JVC HR7200300. Gen.Drum MotorsFerguson/JVC (Mechanical models)Sharp VC7300/7700/7750/8300. GenuineCapstan MolarsFerguson/JVC (Mechanical models)Ferguson 3V35Sony SLC7/C5 (BHF11000)Sharp VC7300/770/7750. GenuineHitachi V133

£4.20

£1.90£15.90£13.20£22.70

£21.45£24.63

£21.45£22.50128.50130.50£30.00

REMOTE CONTROLSFerguson, Grundig, ITT. Phillips, Pye, Sony andHitachi Various models TV & Video Front £1 3.50Sony remote control rubber pads. State model.

UNE OUTPUT TRANSFORMERSDecca 100 £8.50,_

ITT CVC20 C9.13ITT CVC25, 30, 32 . £8.50ITT Compact 80 senes £16.75Rank Bush T20A £9.25Phillips KT3 £12.50

All Sony. Please ask for quotation.£7.10Thom 1690. 1691, 1694, 1615

TV 011/OFF SWITCHESITT, Phillips, Decca, Thom, Fidelity, Grundig, Sonyet. State model for price.

BELT KITSPOWS Off 1F01115512Most models

Access & Visa AcceptedPINCH ROLLERSMost models .. Prices Iran £2.80 TA7241INTEGRATIP5oCilelP,PcPnt) £1.55

TRANSISTORS107267P 02.80 TDA2590 T2.00TA7629 £4.00 TDA2653A E2.75

801078. BF870 use BF472 TBA120S 11.51 1042600 0.80BC1088 11.10 811100. E0.75 TBA530 11.00 TDA2611A £1.00

BCI 47ABC172C

£0.07£0.01

.......BU1280206

£0.70£9.70

TBA560 £1 .10 TDA3190 . 0195188800 £0.85 1083541 12.25

BC214A 6.07 13U208A £0.75 TBA820M 0145 1003560 12.40

BC214B £0.07 80208 (Toshiba) £0.85 1BA920S . E1. 00 TDA3561 12.50

BC237 £0.07 802080... 0.75 MAI035 c., 90 maimr,2A _...____01.00

BC238 0.07 811326A.. 0,75 704I0357 £1.90 7043650 E3. 50

803080 00.07 9040;. ft 50 704I044 £1 .50 704365I £2.50

BC327.25 E0.07 804264.. C0.75 7041082 . 6.20 7043652 12.50

BC328-40 C0.05 81.1508 0.95 MA1170S £1.20 10A3950 0.00BC337 £0.07 805084 0.75 TDA1190 £1.90 1004500 0.110

BC547A £0.07 81.1503D £0.95 1061412 £1.00 10A4600 £2.00

BC548 £0.07 90806 6.75 10A1510 £4.50 10A4601 12.00

BC549 £0.07 Bl1807 £11.75 1081515A £2.51 10A9503 12.55

805596 £0.07 811T11 £0.75 10A1770 6.91 10A1014 12.00

BD137 £0.30 8.1084 £9.60 10A1940 £1.10 UFC339C 6.7980237 £0.22 SG264A £5.95 1DA1950 12.50 UPC1230 £1.75

BD238 £0.22 T1P29 0. 30 10A2033 11.30 00C1363 £1.10

BD2430 E0.30 TIP31 £0.30 10A2005 11.70 UPC1365 13.50

802430 £0.30 TtP32 £0.30 7042030 11 .40 0PC1377C £2.20

BD244 £0.30 T1P41 £0.27 10A2270 02.20 UPC1382 £1.50

00244C £0. 30 TIP42 11725 10A2510 £4.30 610C1394C 11.79

BF195 £1.07 11P42C £0.411 10425211 0.65 0001458 £1.95

BFI 96 £0.15 110112 E0.45 MA25600 . 11.10 ASK FOR Its NOT MED

BF197BF19890259

£0 15OF 07£0.22

2SCI413A ...2SC2958. .....2SC3I 53

E2.5012.50£3.40

OTHER SPARESUniversal Video Copying 60 £31.60

8E458 £0.22 2SD039 20.35 Universal Video Copying Kit (Scart) .. £5.20

BF459 20.22.......

2551397. 23.15 Video Cassette Lamp - Ferguson/JVC with/without Oug £0.50

80471 £0.25 2601398._ 12.25 Video Cassette Lamp - Sharp/PanasoniciAmstradMitachit0.50

BF472BF869 use 8F471

0125 2501497-022501497-06

25.9525.35

Video Cassette Lamp - Sharp 9300 etc complete with plasticmoulding £9.75Universal Cassette Lamps 40m460ina £0.50

INTEGRATED CIRCUITS CRT Anode caps. £080

/41305 0.10 HA11715AN38216 £6.75

£3.20£1.70

Universal Tnpler £4.50Universal Tnpler with Focus Pot 6.00

4N3822 £7.50 LA4461 £1.119 Thom TX10 FOCUS Unit ............... £8.50

AN6310 ..

A163636028 .

AN6362.. .

. .6.25£4.00

13.75£4.25

LA7801145454M5'3931454543..

E1.25£1.05£4.2511.75

Video Tape Splicing 64 £6.95Hitachi11/ Frame Module HM6251 £4.60Cassette Housing Assembley for Ferguson 3V35 36 38/30424374443 025.25

AN6387 .. £5.50 MC1458 - use IIPC1458 SERVICE AIDS - SWITCH CLEANERS, HEADAN66716AN6677 .

4.07169 . ..

BA6109 .

.6.50£5.25t3.50£1.1111

STA401ASTA441CSTIK5325STI(5332

E3.75£3.006.50E3.50

CLEANERS, FOAM CLEANERS, SILICON GREASE,DESOLDERING BRAID ETC. NOW AVAILABLE. ASK

FOR PRICES.

8463024BA6304BA6305

El .75El .950.80t1.£1.7705

ST5422S11(5451ST87348STR441STR1096...

6.00£5.505.00£4.75E3.60

VIDEO AND AUDIO PLUGS, CONNECTORS, LEADSETC. IN STOCK.

RESISTORS, CAPACITORS, FUSES ETC. NOWAVAILABLE.

I.HAM11330011)(18

£2 00£1

.5080

£4

STR421I...ST960205TA7227P

£5.95£4.9012.00

FOR SONY AND PANASONIC AUDIO, T.V.ANDVIDEO SPARES, QUOTE PART NO.

HA11714 0.50 TA 724D 11.50 SEND FOR NEW PRICE UST.

Please add £1.010 per order for p&p and then add 15% VAT.

183 Acre Lane, Northampton NN2 80X. Telephone: (0604) 847800


ZonePort TV & VIDEO WAREHOUSEONE OF SOUTHERN ENGLAND'S FOREMOST TRADE SUPPLIERSWe are one of the South's leading Trade suppliers of top quality ex-ren:al TV and Videos. A good range held inPhilips, JVC, Sony, Toshiba, Hitachi and National Panasonic colour TVs including portables, teletext and remotecontrol models. Now In Stock: Ex -Granada Models, Finlandia/Rediffusion Mk 3, 4 & 4A. Basic, remote &

teletext versions.

NEW B GRADE

ASSORTED STOCKFST TEXT MODELS,

MIDI SYSTEMS, VCR's

(Single & dual speed)

PHONE WHILESTOCKS LAST

CUSTOMER READY STOCKWe specialise in supplying working stock that has been profes-sionally refurbished to a high standard. Our engineers payspecial attention to the cosmetics as well as the electronics, socome to us for competitively priced stock that is genuinely ready

for your showroom and your customers.

RING OUR HOT LINES NOW! SPECIAL OFFERREDIFFUSION TRANSLATOR

NO. 847038£2.00 plus £3 P&P inc. VAT

BRIGHTONCUSTOMERSCONTACT SIMON HEALY

ZONEPORTUNIT N2, LONDON ROAD TRADING ESTATE,

SITTINGBOURNE, KENT

CONTACT BRIAN MOLLETT

ea (0273) 571672 21b (0795) 28166

NORTH EAST AND

NORTH WEST ENGLANDCONTACT HANIF PATEL

(0524) 61122

NOTICETO ESSEX TV TRADERS

NEW WAREHOUSEEx -rental TVs and VCRs plus

new manufacturers '13' gradedgoods available now!

* Fully serviced, ready for theshowroom

* VCR toploaders/front loaders* TVs - Ferguson, Philips

Professionals, TX stereo, NationalPanasonic, Grundig, Decca, Toshiba,

JVC, Samsung and a lot more

SAMSUNG JVCE lf,b,r+cs

Li FERGUSON

01.111U/S

GRAB SOMEPaul on 0375 640800 ACTnctlIONy NOW -

St TRADE(2 Noes)ONLY

CLEARVISION

30A CORRINGHAM RD.STANFORD -LE -HOPE, ESSEXOPEN MON-SAT 9AM-6PM

APPROX. 5 MINS FROM

DARTFORD TUNNEL

TAKE A13 TILBURY ROAD

FROM JUNCTION 30/31, M25

DECCA ITT TELTECH SHARP AKAI

TELTECH< OVER 5,000 SQ. FT. OF QUALITY EX -RENTAL TV + VIDEO C

QUALITY EX -RENTALTV & VIDEO 0

WORKING - NON -WORKING - BASIC -REMOTE OR TEXT

G11 -K -T3 -K -T30 - GEC -DORIC - FINLANDIA

OUR PRICES WILL NOT BE BEAT

zO

CC

LL -w

0>-z

FINLANDNA

TELETEXT FROM ONLYE25COLOUR PORTABLES

FROM ONLY £30WHAT YOU DONT BUYYOUR COMPETITORS

WILL!

OLDER poTV's Z.0

CALL BRIAN ON THE HOTLINE

051-922 4163 051-220 4680UNIT 5, ROBLEY HOUSE

ORWELL ROAD,KIRKDALE, LIVERPOOL 4

TELTECH SONY GEC 876 TELEVISION SEPTEMBER 1989

THE UK's No.1 Is AIMING EVEN HIGHER!THE BEST BRANDS * THE BEST PRICES * THE BEST SERVICE

* * * * * * * * * *

FST's &* LATE VCR's**AVAILABLE

: NOW!* * * * * ** ** *

PRESTON

CHEPSTOW

SOUTHAMPTON

WORKING ycR:SLimEcHAmicht_ FROM Y35

FRom :t Ski11 TA CH REMOTE FR°INI

LEEDS

BIRMINGHAM

LONDON

* DIRECT LORRY LOADS AVAILABLE AT DISCOUNT RATES *

MOST MAKES OF EX -THORN & EX -GRANADARING NEAREST BRANCH FOR FULL DETAILS. EXPORT ENQUIRIES WELCOME.HEAD OFFICE: 48-52 PERSHORE STREET, BIRMINGHAM n (021) 622 1023/1517LONDON: ROYAL LONDON ESTATE, NORTH ACTON ROAD n (01) 961 5005PRESTON: UNIT 439, WALTON SUMMIT (M6 JUNCTION 29) Z (0772) 312101LEEDS: UNIT 2, COPLEY HILL ESTATE, WHITEHALL ROAD n (0532) 422774CHEPSTOW: BULLWARK INDUSTRIAL ESTATE n (0291) 271 000SOUTHAMPTON: 500 MILLBROOK ROAD, MILLBROOK Iv (0703) 777254

Note: Above prices subject to VAT & quantity Handsets extra


* TRADE WAREHOUSE *

(TERRIFIC

SELECTION TV's ANDVIDEOS (UNBEATABLE)PRICES

FULLY RE -CONDITIONED EX -RENTALREADY FOR RETAIL OUTLETS

TV'sGOOD VARIANTS; BASIC; TX9s; TX10s;NON -TEXT; TEXT; STEREO SUPERSOUND;

PORTABLES; ETC.

VIDEOS3V23s; 3V30s ; 8941/8944 ; 3V32/8942;NON -THORN; THORN; REMOTE CONTROL;

MECHANICAL; ETC.

* GOOD DISCOUNT FOR QUANTITIES *CONTACT

YORKSHIRE

KEN COXON TVsUNIT 10,SHAW LANE INDUSTRIAL ESTATE,DONCASTER DN2 4SETelephone: (0302) 342932

NORTH EAST

DONNELLY'S TVsTHE CHAPELFRONT STREET, TANTOBIECOUNTY DURHAM DH9 9RETelephone: (0207) 282435

VIEWVISIONPAGERS

TONEPAGER-0-

WORDPAGER

-0-NUMBER VOICEPAGER MESSAGING

ENGINEERS DON'TLOSE YOUR MESSAGES

WHILE ON THE MOVEWE SUPPLY ACTIVATED

PAGERS FROMTO BUY = £99 + VAT

TO LEASE = £10 + VATp. month

Air service charge: £4.95 +VAT p. month

NATIONWIDE COVERAGE-0 -SIEMENS FAXFROM £650 + VAT

(16 Grey Levels, Portable,and Fotocopy facility)

EX -RENTALTVs & VIDEOS

CompetitivePrices

TX10, TX9, STEREOTEXT, 3V29, 3V30,

3V31, etc

0WE CAN SUPPLY

YOU TRADE PRICEDCOMPUTERS &ACCESSORIES

0ALTAI AERIAL AMPs

SINGLE OUTPUT

0.50+ VATTWO OUTPUTS

E6.80+ VAT(With mains on/offswitch, 7dB Gain470-860 MHz UHF)

If interested, please write to:458A WEST GREEN ROAD,

LONDON N15 3PT.

TEL:

01-365 1620

Mobile:

0836 329886

ARE YOU FED UP

OF BUYING

WORKING STOCK

THAT DOESN'T WORK

PROPERLY?so come to Teletraders

e believe we have the best range and displaf working stock that you are likely to se

anywhere.Why not come along and see for yourself

You won't be disappointed

* Guarantee's available on all sets *TELETRADERS

Brunel Industrial EstateNewton Abbot, Devon

Tel. 0626 60154878 TELEVISION SEPTEMBER 1989

IMPORTANT ANNOUNCEMENTBY THE DISPLAY ELECTRONICS GROUP

The Directors of the Display Electronics Group are pleased to announce that we have acquired the business and assets of theCRT manufacturing unit of Centronic Ltd. Centronic Ltd. have been established as CRT manufacturers for more than 40 years andthe business will be continued by a new company New Century Electronics Ltd.Display Electronics Ltd. have been established as CRT Regunners/Remanufacturers for more than 20 years.As a result of the experience thus consolidated into the one group we are able to offer, uniquely, a total CRT engineeringcapability. Although the two companies' activities are complimentary they will be run as separate enterprises. Manufacturing/product development will be undertaken by New Century Electronics at our Uxbridge (near London Airport) head office.Regunning/remanufacturing will be continued at our Iver (Bucks.) factory.

_

NEW CENTURYELECTRONICS LTD.

Manufacturers of CRTs forData - Telecine - Avionic - Radar - Head Up; Down

and many other applications.

Proven performance from a standard productrange and a custom capability make New CenturyElectronics the obvious choice for your cathoderay tube needs.

NEW CENTURY ELECTRONICS LTDSWAN WHARF, WATERLOO ROAD, UXBRIDGE UB8 2RATELEPHONE 0895 55800 FAX 0895 55619

DISPLAYELECTRON CS LTD.

* Do you use cathode ray tubes?* Can't find a replacement or shocked by the cost?* It may well be that a rebuilt tube will solve your problem.

Come to one of the most experienced firms in the business.We have been rebuilding cathode ray tubes for industry,broadcasting authorities, major airlines, M.O.D., universities,and, of course, the TV trade in general since the '60's.

DISPLAY ELECTRONICS LTDELIZABETH WORKS, THORNEY LANE NORTH, IVER, BUCKS.TELEPHONE 0753 630137 FAX 0895 55619Customers are requested to despetch correspondence/inward goods to our headoffice facility at Swan Wharf, Waterloo Road, Uxbridge UB8 2RA.

AN103AN1270A0203AN210AN211AAN217BAN228WAN236AN240PAN241PAN259

L1.95£2.20£2.2001.75023052.20C2.90

12.5001.50£1.5012.75

AN6610AN6676A116677AN6780AN6811AN6873A06875506894AN7105AN7106KAN7110507111

01.95£7.5001.30C2.3001.6004.5003.5002.75C2.5002.95£1.50C1.50

6013206A133013A13608551025BA5204BA5402A855406955409

BA6104BA6124656208856209

01.25£1.7501.60C2.75E2.75C2.75£320E2.75

C2.80C2,8012.95E3.75

11011749

70117509511753HA11758HA11768HA11788HA11816HA11828HA12001

95120026A12035

£4.75£5.0006.50£8.6004.5004.50C6.50

E1.50£1.5012.9509.50

LA4440LA4445LA4460LA4461LA4500LA4505LA4507LA4508LA4520LA4570LA5112LA5527

£2.7502.75C1.8001.8002.50f2.80£4.25C2.85C2.50£3.7501.8501.95

STK082ST6084STK430STK431STK433STK435STK436STK437STK439STK441STK443STK457

£7.75£7.60£5.50

E5.9505.2505.5005.2505.50E5.95£7.9507.9505.50

ST76020TA71363PTA7066P

TA7073APTA7074PTA7122APTA1136P107140P167145PTA71 93PTA72055PTA7207P

£6.75£1.50£1.50£2.75£1.95C0.90C1.00ri.7512.50£4.0001 .0001.75

T0A3740TDA3S41

T003560TDA3561A105356251053651.,.,,,,,,,---TDA4420TDA4500TD6060021054600/20

£300C3.60£4150£1.95£6.00M70E1390 is03.95C2.95L7'.%

T. POWELL16 PADDINGTON GREEN,

LONDON W2 1LGTel: 01-723 9246

VIDEO HEADSAN26OP

511262

02.20flu AN7112EAN71148

£2.95C2.50

85630413

£2.20C5.00

9512038HA12402

06.75C2.95

LA6324LA63585

02.50£1.20

STK459STK461

£6.75£7.50

TA7208PTA7217AP

01.7501.60

TDA7270UPC575C

Cr.20r .oe JVC/FERGUSON 3HSS £16.00

AN264 0.75 AN7115E 01.60 *011260 E2.75 HA12413 E2.75 LA6458D C1.20 STK463 1140 TA7220P 02.50 UPC ,001H D.20 PANASONIC 4HSS £16.00

AN271A C210 At17116 01.50 HA1124DS 03.50 FIA13001 C2.95 LA7016 02.75 STK465 00.50 TA/222AP £1 .30 upc,019c ..1 95 HITACHI VT11'14/33 £21.00

AN27450277

12.75,..,, .."...507120507130AN7131

£1.5001.30£2.75

6011256A1137W951144

C1.7501.75£4.25

9513007115134021513432

£4.9504.9504.50

157031LA7032LA7215

£2.75£4.50

12.75

S165010160025S1K0029

01.25£4.9504.75

TA7223P157225P157227P

02.30

03.2002.20

UPC10256UPC1031H

e.3001 .96

HITACHI VT5000 £22.00HITACHI VT8000/9000 £21.00

50295 £3.60 AN7140 £2.20 951151 02.50 LA1111 C0.95 LA7224 (2.95 STK0039 £4.75 1A7229P 03.25 UPC10326 10.50 HITACHI V17'17/19 £38.00

AN301 £3.50 AN7143 12.95 HA1156W 01.20 LA1130 02.75 1f,7505 £2.95 STK0040 06.25 TA7230P 01.95 UPC'1158H 63.95 SHARP Most models not 6300/7300 £22.00

AN302 C3.30 AN7145M 02.50 HA1167 03.75 LA1140 02.20 LA7507 12.95 0160049 £1.50 TA7232P 12.95 UPC1181H 01.10 SANYO VTC5000 £36.0050303 (2.75 AN7146M 02.80 451196 01.75 LA1222 £1.00 857520 £3.25 STK0059 07.00 T57233P 12.95 UP111826 01.10 AMSTRAD/SAISHO £22.00AN305 £3.50 AN7149N C2.95 11.01197 03.70 LA1230 01.50 LA7521 04.50 STK006011 £9.50 TA7240AP 02.95 UPC1185H Q.50 SONY DSR36 £20.00A03130AN315

02.9502.30

5071545071560

£1.9002.50

951199951319

01.65£2.50

LA1231LA1240

02.0001.95

LA7751157755

£4.7503.20

STK0080STK1060

£7.75£7.95

TA7241AP157269P

C2.95£5.50

UPC1188HuP11225H

12.7502.75

TOSHIBA 9600 £23.00

AN316AN31850337

AN340P

03.75£4.95,. .,...'-.1,,,.

..'..,

AN7158N507160AN7161AN7166

03.25C3.75C3.7503.95

HA1366WF1A1366WR951367FIA1368

01.80C1.8503.2501.90

LA1260LA1353LA1365LA1368

C2.95E2.5001.50C2.50

LA7800107801LA7806LA78081*7820

£1.9502.9502.7512.95

STK2025S1K2028ST1(2029S1K203811S1K2125

C7.5007.5005.7509.50£6.75

1A7270P157271P157272P157273P1A7274P

12.75C2.7502.9503.20f2.95

UPC1230HUPC 1263CUPC1277HuPC:1278H

12.50V.5012.75

75

VIDEO SPARESJVC Idler PU47752 £4.95

AN360003621

£1.30

01.60

AN71681047178507213

02.75C2.9501.95

6513686951370HA1372

£1.9513.70C3.50

LA1385LA1387LA1460

£1.9513.6002.50

LA79101579213

(2J75£2.2001.75

STK2129STK2230

06.75£6.50

107280PTA7281P

E3.5012.95

UK1363CUPC1364C

,,;':k--...:4.75

JVC Pinch Roller £2.95HITACHI Idler VT11-14-17 £1.75

AN363N £3.50 507218 01.75 951374 £2.50 LA1464 13.20 LB1405 C2.20 STK2240 £9.50 TA7282AP C2.95 UPC1365C M.60 HITACHI Idler Play VT8000 £2.75

AN366p 01.70 AN7222N 13.50 HA1377 C2.20 LA2100 £2.95 101409 02.95 STK2250 £9.50 747283AP 02.95 UPC1384C £3.50 HITACHI VT8000 Idler F/F/Rew. £1.85

AN374P 12.20 AN7223 03.95 H51384 03.95 LA2101 £3.30 LC40660 02.95 STK3041 £6.50 TA7288P £2.95 UP.313870 0250 HITACHI VT9000 Play Idler £2.95AN377 02.00 AN7224 03.50 H01388 03.50 LA3160 (1.50 LC7130 03.50 STK3042 06.50 T47299P 12.95 UPC1391H £1.50 HITACHI Pinch Roller 8000/9000 £2.95514610P50612

01.8001.80

507256AN7273

03.5003.95

9513899513896

£2.20E2.20

LA3201LA3210

£0.95£0.75

LC7131LC7132

03.75£4.00

STK3044S1(3062111

05.95£6.75

TA7317P1A7328P

12.7502.20

5P01394C 01.95 SHARP Pla y Idler £1.95

505010 04.75 A07310 £1.20 74A1392 E2.50 153220 C2.95 LC7136 £3.75 STK4026 05.75 157343AP U.95UP22002 0010 JVC Drum Motor £22.50

AN515111 11.50 507311 01.29 HA1394 C2.95 LA3300 C1.65 LC7137 04.50 STK4060 06.50 1A7358P £2.80 ,.,,,LIKA,.,555C 0-90 SANYO Capstan Motor £29.50

AP15265 C3.20 507410 03.00 951396 £3.75 LA3301 01.30 LC7800 03.95 STK413111 06.75 TA7607AP C2.95 1..... .,_".22 SANYO Reel Motor £8.00AN5410 05.50 507415 f2.95 951397 C2.75 LA3310 E2.75 M5134P C3.25 STK414111 07.50 TA7608CP 13.95 B..,40 ''-22 SANYO Reel Drive Pulley £5.00AN5411AN5430

03.50£2.95

AN7420BA301

03.25£0.00

951398HA1457W

02.75E2.75

LA33501A3361

£1.3001.20

M5155PM51102L

C1.%13.95

STK415111STK4332

£7.5013.75

1 157609PTA7613AP

£2.7002.75

019908E1191

00.70£1.20

SANYO Pinch Roller 50(10/5300 £5.95

505510 (2.75 05311 C0.95 HA11215W 04.35 LA3370 02.80 M51104L C3.95 STK4352 £6.50 -57628P 02.95 BFY90 E9.50 SANYO Pinch Roller 9300 £4.95

AN5512 E2.95 BA.313 111.80 9511219 03.25 LA4030P 02.00 M51513 £1 .80 STK4392 £7.50 1A7640AP £1.75 06303 (1.50 SONY Capstan Motor 1100 £28.75

AN5612 03.75 BA314 02.20 9511221 02.75 LA4031P 01.95 M51514 £1.95 STK4803 £8.50 757658P 01.75 06Y56 £0.20

5056200 03.50 BA318 01.50 HA11223W C3.80 LA4032P 01.90 M515150L C2.50 STK4833 £9.50 TC9106BP 04.95 B1106 £1.00

AN5701 01.80 BA328 02.50 9511225 C1.95 LA4100 01.20 M5151661 C2.80 STK4843 £11.95 TD62105P £3.50 W2085 01.20 ENQUIRIES OTHER ITEMS

AN5722 01.60 05333 01.50 RA11226 C4.50 LA4101 £1.00 M51517L 02.80 STK5211 £5.75 10510100 E2.25 0112080 01.80

AN5730 E1.85 BA335 03.60 9511235 02.30 LA4102 01.40 M51518L 02.20 STK5315 £6.75 10010110 12.50 1311326A 01.95 UNIVERSAL TRIPLERS £5.50505732 01.85 BA340 (2.50 6.511251 (2.75 LA4110 C1.75 M51521L 01.90 STK5324 05.75 10510745 02.75 131.1500 01.80

AN5750AN5753

03.7501.95

135343BA402

C2.7500.95

HA11401HA11423

02.8004.75

LA4112LA4120

01.7512.95

MB3705MB3712

01.80£1.50

STK5325STK5421

017506.50

105115110011700

01.2001.50

61150852113055

£1.8000.50

CASSETTE MOTORS

506250 02.30 8A403 11.95 9511440 03.95 L64125 12.20 M03713 £1.60 01K5451 11.75 1051170S 01.50 203773 Ella 6-9-12-13.2 Volts C W £3.45

AN6326N 03.70 015115 01.65 H511701 £3.50 LA4126 C2.60 MB3714 12.95 511(5471 £6.50 1051510 £4.50 255733 c0.40 12-13.2 Volts C.C. W £3.45

5146327AN6328

£4.75£4.20

BA514BA516

01.9001.90

HA11703HA11704

04.5005.20

LA4137LA4140

(1.9500.90

M03722M83730

03.5002.50

STK5476STK5720

£6.7506.110

TDA1515TDA1515A

04.50£4.50

25011042551106

E2.50E2.75 CASSETTE HEADS

5063304846340

02.95C7.85

BA521BA524

C1.8002.75

#51170511511706

E6.95£4.75

LA4145L54160

£1.70(2.40

MB3731M83756

03.50U.60

STK573001K7216

C4.25C6.50

TDA1908A1052002

03.75C0.80

2505362505465

£0.951750 Mono £1.50 Auto Rev £2.75

556341N £4.00 BA526 £3.50 9511710 13.75 LA4170 03.50 M133759 02.30 STK7308 £5.95 TDA2003 £0.90 231461 £0.35 Stereo £250AN6342NAN6344

C2.5004.75

BA527BA532

£1.7501.60

115117116511713

£9.5006.50

LA4178LA4182

72.51102.20

MB8719STK011

03.8503.95

STK7404STK8250

£6.95C8.95

TDA200410521305

02.20C2.75

2511364SC1942

£0.50E2.95 &wines melted 101 any Japanese I Cs As we have imported

AN6350 £7.50 80536 12.511 9511714 03.95 LA4183 E2.95 STK014 07.25 51(8251311 £10.75 1052006 £1.50 2SC1969 03.75 Tor over 10 years

50635614 13.65 BA546 1220 9511716 04.75 LA4192 01.95 STK015 05.20 518380 05.80 TDA2020 C1.50 2SC2166 £1.00 ITEMS DESPATCHED WITHIN 48 HOURS

5063570 04.95 BA547 12.50 HA11717 £5.75 LA4201 f1.60 STK016 £6.25 STR440 £5.60 1052030 01.50 2SC2500 0235 please add 60p post and packing and then add 15% VAT to total.506360AN6362

C4.50£5.50

BA612BA631A

01.8001.75

9511718HA11724

£4.75£9.25

LA4220LA4230

01,5002.25

STK025STK043

£7.50010.50

STR441STR451

05.80£5.90

TOA2170TDA2581

C2.75(2.50

25125812513156

£29503.50 Callers by appointment

506363 £0.50 BA656 04.50 HA11727 09.50 LA4420 01.75 51K077 11.50 STR2012 06.75 TDA2611A 01.35 2504015 £1.50 opening times 10am-5pm, Mon -FN 9-12 Sats

7046371 £4.25 135843 04.50 HA11745 £9.00 LA4422 01 .75 STK078 05.75 STR4090 £6.75 10026535 03.80 :501398 02.50VISA/ACCESS ACCEPTED - MIN. TELEPHONE ORDER 05.00

AN6387 05.95 051310E 01.75 6511747 09.50 LA4430 01.50 STK080 £7.50 STR4211 C6.75 1003505 £5.20 2S01453 E1.65


ORDERS BEFORE 4.00 P.M. - SAME DAY DESPATCH!

LIST PRICES EXCLUSIVE OF VAT

ORDERS UNDER £50 ADD £1.00 P&P

VIDEO SPARES FAST ex -stock! 01-3881714 dr:CM

906 CLEVELAND STREET, LONDON W1P 5DRVIDEO HEADS

REPLACEMENT HEADSJVC/FERGUSON,ETC. 3116-V 15 75TOSHIBA 9600 25.10PANASONIC NV,366 (4 HEAD) 4020PANASONIC NV -3311M 38.46PANASONIC NV -3332000/7000 ETC

.,.,15-2SHARP UNIVERSAL "'AiSONY SLC06/713000 17/5SONY SLC9 39,42SONY SLCK1/30/4041FISHER FV0H-615 ETC.

,n.50A11, 10

FISHER FVHP-6I5 ETC ,34.2SANYO VIC5000,515075300 A 4.1/VHR1100-1110.1 7%13002300 33."

Many More Replacement Heads in Stock

HITACHI ORIGINAL HEADSVT5000 5458109 41.65HT8000)9000 5458161 41.65VT11 14 33 5458415 44.71076364 5459)52 41.65VT65 5459252 60.84VT120 5457471 48.15VT130 5457472 48.15V1150 5457473 48.15

PANASONIC ORIGINAL HEADS10/100200 A110171 41.40NV180 VEH0252 62.10NV230 45110296 41.40NV333 VEH0103 41 40145366 6500174 62.10NV688 VE00210 62.10NV370 VE00218 64 1010/430 VEH0286 11.40NV730 VEH0267 62.10110777 WH0177 62.10NV758 VE140201 7038NV810 VE00294 6411NV830 VEH0266 70.38NV650 VEH0265 70.38NV870 VEH0288 93.84NV20002010(3000/7000,720003600/8610 VEH0121 41.40N0G7 VE140296 41.40485010 45110287 62.10

M 114, Palm* Mods in 63c11

SONY ORIGINAL HEADS50181026306030 ETC RV5 89.48EVA300/EVS700 (RED OR BLUE) 00111-040 86.12EVA300/EVS700 (GREEN OR BLACK) DV11141411101 88.12SL -H4950 0011-78R 132.25SL40100 .

SL -F1620730,40 DSR-36R 4810SL -C9 000-210 48.96SL -056 7,8000 DSR36R 4810

SONY '5' SERIESUMAT SERVICE KIT 127.60

ORIGINAL PANASONICVIDEO SPARES

NV333166 IDLER VXP0401 124NV333,366 (PLAY TAKE UP) WP0433 3..06

NV810,30/50/70 IDLER VXP0521-n2.56

N5600,688 IDLERVXP0581

,..18,W730 IDLER

WP0515.0.

t1V777,778 IDLER VXP0463 3.18W2000 SERIES IDLER V00329 1.24W2000 (PLAY/TAKE UP) 10P0331 1.24NWO(10 SERIES IDLER VXP0344 1.24V7000 (PLAY/TAKE UP) VXP0343 5.76

NV57,610 IDLERV00432

2,ROLLER 6633,366

WPC6218.51

ROLLER W730 0011154 7.93ROLLER BV730 51(50339 7.58ROLLER NV2000 5X10330 10.66ROLLER 6/7000 VX10776 76NV-7000

ENS BAND 48533166277 WZ0129 2.08TENS BAND 4853711230 AZ0165 145TENS BAND 1020002020 5X20076 5.92TENS BAND NV7000 7200 IN20078 7,REEL MOTOR NV333 366 MYN13051 15.03

ORIGINAL SONY VIDEO SPARES14 8 REW ASSY SLC2030;4049100 5.40

5.65OC/DC CONVERTOR SLC9 22.53CARRIAGE MOD KIT SLC9 6.6CARRIAGE COMPLETE SLC9 69.10UPPER DRUM UNIT SLC9/SLFI 22.75CAPSTAN MOTOR SLC.5/7 33.56IDLER KIT SLC57 4.80IDLER KIT SLC6 168FIND LIMITER ASSY SLC5/7 2.72FWD LIMITER ASSY. SLC6 358PINCH ROLLER SLC576/7 2.48PINCH ROLLER SLC9/C20/F1/F2541F100 ETC 755TENSION BAND

3.40ASSY. SLC5/6/7

LOADING PULLEY SLC6 1.80PLEASE ASK FOR ANY PARTS NOT LISTED

OTHER MANUFACTURER'SORIGINAL PARTS

..,SANYO REEL MOTOR VTC5000 ILSANYO REEL DRIVE PULLEY 5TC5000 z.n.FISHER IDLER ASSY. 4141615

4.,,,-HITACHI FFREW. MM VT1133HITACHI HM6251 FRAME 0/P MOO.

1.,.."1/17,

SHARP REEL MOTOR VC9300 ETC --SHARP REEL DR IDLER VC9300 ETC. 26SHARP REEL DR. IDLER VrA81 ETC 2/6

ORIGINAL JVC VIDEO SPARESCAPSTAN M0000 HR36603022 24.75CAPSTAN MOTOR HRD1203v33 24.75DRUM MOTOR HR36rs0.1/22 24.75PUP IDLER (LARGE) HR3660 5.66

IMP IDLER (SMALL) HR3660 3,17UP IDLER 1107703/3V29TTUP CLUTCH HR7200/V29

1.X220

REEL IDLER HR7200/3V29 2.16REEL IDLER HRD12113V35T/UP CLUTCH H6)110/20,125

2.102.20

CASSETTE CARRIAGE 3V45 ETC 15.11PINCH ROLLER (ALL MODELS) 3.90

VIDEO BELT KITS (ORIGINAL)PANASONIC NV333 366 3.66PANASONIC NV777 788 212PANASONIC NV230430470 21,2

PANASONIC NV370,831850 212PANASONIC NV688 4.18

PANASONIC NV -2000 SERIES 3,PANASONIC N SERIES 3,

VIDEO BELT KITS (REPLACEMENT)SANYO vrc-5000 IrkSANYO VTC-5300 2.10SANYO VTC-5500SANYO VTC-6500

210

JVC HR-3330,3360i3660/V16,22 250JVC HR -7700 2.10JVC HR -7650 210HITACHI Vf11 1.70HITACHI VT5000 2.50HITACHI V18000 131SHARP VC7300 2.20SHARP VC8300 2.20SHARP VC9300 2.20TOSHIBA 7540 2.50TOSHIBA 9603 1.60SONY SLC6 1.15SONY SLCS7 2.05

REMOTE CONTROL UNITS (SONY)1146048 01612 MK12204 Th.,R4615P KV20562212/162705 ETC 37.50RM632 KV2062/662216/17 ETC 21.68

RM641A ID/2092/2096 29.59RM651 KV1442 1936Rm661A KV21XRURMT211 SLF1 1:::RMT213 SLC9 32.11RMT216 SLC20/30,40MF100 GREY 30.44RMT216 SLC2010,40/11F100 SILVER 32.43RMT230 5160, 37-50RMT405 EVS600700 37 6

ALL OTHER SONY REMOTES AVAILABLE

REMOTE CONTROL UNITSPANASONIC

NY00333370 BLACK OR SILVER 10.39485366 5S00257 11.21W730 VS00357 30.55NVT77 6/A17E 3554W7000 VS00117E1 36.07

NV72°3 OR SILVER 45E6

ALL OTHER PAN. REMOTES AVAILABLE

GOODIES SELECTIONSONY BETAMAX ALIGNMENT TAPE 36.55PANASONIC VHS ALIGNMENT TAPE 88.18SONY V 8 BATTERY PACKS NP22H 3321SONY ECCENTRICITY GAUGE+JIGS 69.51SONY OPK20313 TEXT BOARD 60.64OPK113 T/BOARD + LEADS - KV1442 60.64OPK202A SECAN ADAPTOR 5120SONY REM. RUBBER PAD-RM6326 6.40TELESCOPIC AERIAL KV1400,1612 7.6TELESCOPIC AERIAL G1412,1430 9.34VIDEO COPYING KIT (WO 4.25SCART KIT (UNIV ) 5.60

STYLI AVAILABLE FOR MOST MODELS

MANUALS (0 VAT RATED)SONY TV MANUALS 630SONY VIDEO MANUALS 10.86PANASONIC 8 JVC MANUALS P.O.A.

SONY SWITCHESPOWER TV REMOTE (QUOTE MODEL) 3.90POWER TV NO -REMOTE (QUOTE MODEL) 3.35POWER P/1142/1882 SOLENOID 21.64TIMER SWITCH C5/7 1.03RELAY SOUND SLCS7 AUDIO CASSETTE 9V 125 4.98

SONY SEMICONDUCTORSSG613/SG6533 9.95

4.98PSU KIT SLC7 10.862SC867A 4.156C1114 = 2SC1454 CM2501316 TRS. ASSY 7852SC1413A2SC3153

7A75.20

2501396/601397601398

45.15Z0

2SD1497-02/2501497.06 5.20011225 17.4STK2129 17.4MA2578A 158TDA3652 4.5410A4600 6.40UPC1365C 10.86UPC1394C 198

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STEKTRONIX 2215 Oseal

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TEKTRONIX 065 Dual Trace 100MHz Delay Sweep 040TEKTRONIX 454 Dual Trace 150MHz Delay Sweep ENOTELEOUIPMENT 083 Nal Trace 50MHz Delay Sweep 4200GOULD,ADVANCE 0S300A Dual Trace 4041H, Delay Sweep C300

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75 HAMEG MODULAR SYSTEM ONLY £400HAMEG 203.4 Dual Trace 20MHz 4240 4648001 Main Frame with HM8032 Sine Wave Generator 2C.liz -

H P 1220A Dual Trace 15MHz 4200 20MHz, HM8030 2 Function Generator 0 1 -- 1MHz Sine saGOULD/ADVANCE 051100 Dual Trace 30MHz 010GOULDADVANCE 05255 Dual Trace 15MHz

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Ceps 82 Prods ES (P&P C3)

Black Aver -Ready- case for AVOs Unused 051P&P C4)

MARCONI TF2016 without Synd'uoniser ONMARCONLSANDERS SIG SNRCE 605513 850- 2150MHz MOO AVO VALVE TESTER C7160 Suitcase style 22 Bases (P&P

DYMAR 1525 AWFM 0 1 -184MHz Sig Gen .000 C71 ONLY C25eleh

HP 694 SWEET OSCILLATOR 7 - 12 4G10 . E000 AVO TRANSISTOR ANALYSIS Mk? CT046 Suitcase style COrn-

H P. 620 Signal Generator 7- lIGH: . 000 Pete with batteries and operating instructions ONLY 005 EACH

H P 614A Srgnal Generator 800- 210060tt um (P50 £71FERROGRAPH 117 02 Recorder Test Set 075 MARCONI AF POWER TF893A 2011: - 35KH: 20MW - IOW with

WOELKE Wow & Flutter Meter ME 108 £100 manual ONLY 05 (P&P C7)

LEADER LMV186.4 Two channel Millivoltmeter 5Hz - 500101z. MARCONI OF POWER METER TF11526 1 DC 500MHz 0 5 to

100uV- 300V 000 25W 50 Ohm writ manual ONLY EN (P&P C7)

LEVELL TG200DM 1112 - I MHz SmeSquare £125

NEW EQUIPMENTMARCONI Automatic Distortion Meter TF2337A 000Hz or 1KHzMeasures down to 0 01% C150MARCONI 10 2700 UNIVERSAL LCR Bndge Battery Operated- HANES OSCILLOSCOPE 604 Dual Trace 60MHz Delay Sweep

Frem 050PHILIPS PM6456 FM Stereo Generator 05

Component Tester -t two probesHANES OSCILLOSCOPE 203 6 Dual Trace 20MHz Component

PHILIPS COLOUR BAR GENERATOR P515519 UHF VHF Video Tester weth two probes £314

NEI 20 Test Patterns£m Other Models Availabk

SADELTA MC321 COLOUR BAR GENERATOR OF Bands 13.4 &Video 8 Functions Sound Canter Unuod (P&P C7) £125 BLACK STAR COUNTER TIMERS IP&P ES)

SADELTA COLOUR BAR GENERATOR PAL MC101 8 Patterns APOLLO 10 - 100MHz Radio,Penoillene interval etc C222

ROM S. Rechargeable Battens Complete wnh Battery APOLLO 100- t 00MHz (As above with more lunctionsl F295£70 BLACK STAR FREQUENCY COUNTERS IP&P C4) Meteor 100 -

ITEaCKKAErNrGG7lo'dur ertPenerMator type. 82511 C10 LOOMR2EN

Labgear Colour Bar Generator KG1 8 Test P0NLatterns (P&PC4)

y e40 qd,00.110

f102978Meteor 1000- 1GItz

LABGEAR FIELD STRENGTH METERS 010 IP&P En BLACK STAR JUF1TOR 500 FUNCTION GENERATOR Sine

LABGEAR CROSSHATCH GENERATOR Type C1460373 DB Cross. SquareTnangle 0 1Hz - 5001010 (P&P C41 010hatch/Grey Scalalank Raster Mains or BATTERY Unused OIL ORION COLOUR BAR GENERATOR Pal TV Wee E209

Used 02 (P&P C3)TRIO OF SIGNAL GENERATOR Type SG402 100101z-30MHz HUNG CHANG EIMM 7030 312 digit Hand held 2A ranges

Unused (POP C7) ONLY (75 incluclong 10 An AC-DC0 111. Complete wrath batteries & leads

ADVANCE SG628 AM 150KHz-220MHz t46 (P&P C71 (P&P E4) -

09.50

ISOLATING TRANSFORMERSAs ablnove DMM 6010 0 25% 03.50Carryg cases tora b ov e Ouch

240V In - 24V 200VA FS (P&P C4240V In - 24V Oul 1 00VA 0 (P&P £4)) OSCILLOSCOPES PROBES Switched +1..10 (P&P C3) £11

USED EQUIPMENT - WITH 30 DAYS GUARANTEE. MANUALS SUPPLIED IF POSSIBLE.This is a VERY SMALL SAMPLE OF STOCK. SAE or Telephone for Lists. Please check availabilitybefore ordering. CARRIAGE all units £16. VAT to be added to Total of Goods 8 Carnage.

STEWART OF READING110 WYKEHAM ROAD, READING, BERKS RG6 1PL

cimam Telephone: 0734 68041vis. Fax. 0734 351696Callers welcome 9 am -5.30 pm Mon. -Fri. (until 8 pm Thurs.)

CENTREVISIONSLOPER RD, LECKWITH, CARDIFF

PHONE 0222 344754If you buy new televisions & Video's, SAVEUP TO E70 and buy boxed, guaranteedseconds.Quality ex -rental TV & video at GREATDISCOUNTS, try before you buy.Phone for our latest price list with all ourmonthl u to the date bar ains.

ILJNew and rebuilt for most makes of T.V.

including: Hitachi, Panasonic, Philips, Thorn,Toshiba, Sharp, Sony Mullard 20AX, 30AX, 45AX, F.S.T.

Two year guarantee with a four year option.Price list available on request.

EXPRESS T.V. SUPPLIESThe Mill, Mill Lane, Rugeley, Staffs. 0889-577600

Bristol0454-316285

Exmouth(AJC)

0395-266210Londlon

01-863 9371

GLASGOWWHOLESALETELEVISIONSCOTLAND'S

LARGESTWHOLESALER

75 ROBERTSON STREET,GLASGOW

(EX SABACO'S PREMISES)Junction 19 off M8

LARGE SELECTIONOF GRANADA AND THORN

WORKING AND OFF THE PILE

AT UNBEATABLEPRICES!!

DUE TO TREMENDOUS SUCCESSOF LAST MONTH'S OFFERWE ARE REPEATING OUR

SENSATIONAL OFFERFINLANDIA REMOTE CONTROL

SETS (WORKING)

from £25 + VATincluding hand unit

Spares available and diagramDeliveries can be arranged

RING STUART041-221 2146for latest prices


BOLTON COMMUNICATIONS PROJECTSATELLITE TELEVISION COURSES

TO BE HELD AT BOLTON METROPOLITAN COLLEGE.

One Day CITY AND GUILDS COURSE ON FIXED DISH SATELLITEINSTALLATION (offered on behalf of the Confederation ofAerial Industries). Course date 28th Sept. Cost £90

Four Day SATELLITE TELEVISION INSTALLATION COURSE Oneday a week for 4 weeks. Start date 5th Oct. Cost £150.

STARTING SEPTEMBERFULL-TIME TWO YEAR B.T.E.C. NATIONAL DIPLOMA IN

ELECTRONICS AND COMMUNICATIONS (including Satellite Television)

PART-TIME CITY & GUILDS279 - Television and Video Production (one or two days)

224 - Satellite Television (Day or Evening Course)

AVAILABLE 1990 - INTERACTIVE VIDEO ON SATELLITE TELEVISION

For further information please contact:Terry Tudor (Project Manager),

Bolton Metropolitan College, Manchester Road, Bolton BL2 1ER.Tel: (0204) 31411 Ext. 3371

MARSTALL LTDTV & VIDEO 111101.F.S.1,ERS

38 lIORNSISI SOt 1111111.11S 1\11. LSI Vii.. I. kl \DON.

Access

FOR A LARGE SELECTION OF

RECONDITIONED EX -RENTAL

THORN TVs + VIDEOS

PLUS MANY OTHER MAKES AT

MOST COMPETITIVE PRICES

NEW 81 SECOND HAND SPARES ALSO AVAILABLE

QUANTITYDISCOUNTS

OPEN 9 a.m. - 6 p.m.MONDAY - SATURDAY

DELIVERY SERVICETHROUGHOUT UK

COME AND PAY USA VISIT AT OURNEW LARGER

PREMISES(JUST OFF M25 JUNCTION 29)

Don't Delay Phone TODAY!

0268-412711

REBUILTCOLOUR TUBESDelta - 20AX - 30AX - In Line

N.G.T. ELECTRONICS LTD.120, Selhurst Road, London SE25 6LL

PHONE: 01-771 3535First Independent Rebuilder with Certification

TV LINE OUTPUT TRANSFORMERSPRICES INCLUDE CARRIAGE. VAT NOT APPLICABLE.

Barclaycard andmarsalNSA

Access welcome

9 am to 9 pm

DECCA PYE 725-741 CT 200 KT2 8.50 WINDINGS'30' series Bradford colour 1010 REDIFFUSION Done Mk .3 9.00 RANK BUSH MURPHY

TANDBERG80 series colour 8.50 T20a 122. 126 Pri 8 Sec 6.00

100 series colour 0.50 CTV 2-4-126 15.00 2718 primary state 18" or 27' 6.00

CTV 3-1-156 3-3-164 15.00Z718 EHT overwind 8.00

Fidelity 2X2000 14"/16'20"15.m

Fidelity ZX 27'26"27-110

Fidelity FR/12 101°We also supply spares for sovERBGN

E15.00Amstrad, Grundig, Tatung.

14" colour overwindHinari CT4/5 2280 Hitachi. Thorn, Triumph. Saisho. THORN .16901691 air

ITT Scneider, Sony, Toshiba with rectifier £7.00

CVC5 CVC7 CVC8 CVC9 col 10.00 E. PAPWORTHCVC20 series colour 9.011 VISUAL DISPLAY UNITSCVC30 CVC32 series colour 8.50 120 Risegate Road, We can Rewind the L.O.P.T.sCVC45 8.50 Gosberton, Risegate, for the I.B M. LCE FBI and the

FT100 FT110 state pima 10.00 Nr. Spalding,Lincs PE11 4EY

Digital VT100 £20.00 old unitRequired

PHILIPSDelivery by return of post.G8 8 G9 series colour 8.50 0775 840778


CENTRALLONDON TV & VIDEO WHOLESALERS (UK) LTD. LEICESTERBOLTON BIGGEST SELECTION - KEENEST PRICES BIRMINGHAM

FOR THE BEST DEAL AROUNDENTIRE RANGE OF EX -RENTAL T.V.'s & VIDEO's FROM

THORN GRANADAPLUS MANUFACTURERS NEW 'GRADE B' T.V. & VIDEO

AUDIO - HI-FI - MICROWAVE - ETC.HANDSETS - VIDEO HEADS - AERIALS - SET -TOP - SELFIX - R.F. LEADS - A.C. LEADS

50

BASIC T.V.'s

THORN/GRANADA

MIXTURE

SPECIAL

OFFER

50

TEXT T.V.'s

OR REMOTE

THORN/GRANADA

SPECIAL

OFFER

50

FULLY SERVICED

VHS VIDEO's

THORN/GRANADA

SPECIAL

OFFER

F.S.T.

NEW - USED 1'NEW 1'

PORTABLES

FRESH STOCKS EVERY DAY. WORKING OR OFF THE LORRY

LOADS AVAILABLE DIRECT FROM SOURCE

PHONE NOW FOR DETALSH/SETS

FROM £8.00

LONDON01-807 409001-884 1314

CEDER HOUSE, ELEY ESTATENOBEL ROAD, EDMONTON N18

OFF A406, ANGEL

BOLTON0204 384868

UNIT 1NILE STREET

BOLTONLANCS.

AGENTSREQUIRED

NATIONWIDEDELIVERYSERVICE

DELIVERYSERVICE

LEICESTER0533 515299

ST GEORGES MILLHUMBERSTONE ROAD

CORNER OF WIMBLEDON STLEICESTER LE1

HEAD OFFICE021 772 1591

369 STRATFORD RDSPARK HILLBIRMINGHAM

B11 4JY


ClassifiedAdvertisements

01-261-5942

TELEVISIONNo other consumer magazine in the country can reach so effectively thosereaders who are wholly engaged in the television and affiliated electronicindustries. They have a need to know of your products and services.

The prepaid rate for semi display setting £8.50 per single column centimetre(minimum 2.5cms). Classified advertisements 55p per word (minimum £10),

SETS & COMPONENTS

OCHRE MILL TECHNICAL SERVICES. Are now on()bob (Malmeshury) 823228. Grundig TV spares allmodels to 1983. Fast, friendly, helpful service, sensibleprices. Gt. Lype Farm, Charlton. Nr Malmeshury.Wilts SNIh 9DR.

PANASONICTV's + VIDEO's

Good range of late models - well wortha visit

Superb and workingMany other models/makes

More profit, less headachesRegular supply

Repo TVDaisy Works

345 Stockport Road,Longsight, Manchester.

(A6 between M/c and Stockport)Mr Poole or Mr Ricketts

Tel. 061-273-2854/274-3409

USED VIDEO SPARES

VHS - BETA - 2000PANELS, MOTORS, CABINETS, TUNERS,

LOADING MECHANISMS, ETC.SAVE ELts

PHONE US WE MAY HAVE IT.

HOLME SERVICES LTDUnion Street, Doncaster

Tel. 0302 349583 Fax 0302 349510

SURPLUS/REDUNDANT ELECTRONICCOMPONENTS WANTED

I/Cs - Tuners - Transistors - Valves -Diodes etc: any quantity considered -immediate payment.

ADM Electronic SuppliesTel. 0827 873311. Fax 0827 874835

WIZARD DISTRIBUTORSMANCHESTER

TV & VIDEO SPARESWe stock spares for PHILIPS, PYE,

RANK, GEC, SHARP, SONY, HITACHI,SCHNEIDER, HINARI & DECCA

And also THORN & ITTFIDELITY SPARES MAIN DISTRIBUTOR.

Did you know we also stockFUSES I CsTUBES TOOLS

AERIALS VIDEO LEADSAEROSOLS AUDIO LEADSRESISTORS SEMICONDUCTORS

CAPACITORS SERVICE MANUALSVALVES TEST EQUIPMENT

HANDSETS TVNIDEO TROLLEYSVIDEO HEADS TELEPHONE ACCESSORIES

Counter openw 1441=1=saxr9a.m-4.45pm

TRADE ONLYEMPRESS STREET WORKS,

EMPRESS STREET,MANCHESTER M16 9EN.

Tel: 061-872 5438; 061-848 0060.

C. T. V.2 NORTON ROAD, STOURBRIDGE, WEST MIDLANDS

TELEPHONE: 0384-390706 / 0836-585829 (24 HR)

LARGE SELECTION THORN TV + VIDEOSQUANTITY OF NON THORN TV + VIDEOS

QUANTITY OF PORTABLES AVAILABLEALL AT COMPETITIVE PRICESOPEN: MON-FRI - 9.30-5.30

SAT 9.30-3.00

TEL 0384-390706 0836-585829 (24HR)


SERVICE PAGESbox number £1.00 extra. All prices plus 15% VAT. Ail cheques, posta ordersetc., to be made payable to Television, and crossed "Lloyds Bank PLC".Treasury notes should always be sent registered post. Advertisements, togetherwith remittance, should be sent to the Classified Advertisement Dept., TelevisionRoom 2331, IPC Magazine Limited, Kings Reach Tower, Stamford Street,London SE1 9LS. (Telephone 01-261 5942).

Access

AftWELCOME

LINCOLNSHIREAREA

FED UP WITHTRAVELLING FARAND WIDE FORYOUR EX -RENTAL

TV ANDVIDEO'S?

THEN WHY NOTTRY US FIRST?

BUDGET

TVUnit 4,

Exchange Road

Lincoln LN6 3J1

Tel.

Lincoln 500413

SUFFOLK TV & VIDEOSLarge stocks always available

GEC, Fineline KT3, KT30, Hitachi,Nat Pan, working stocks in our

showroom from £20.00.Text £85.00 with handset.

0394 670115Bridge Road, Felixstowe,

Suffolk 1P11 7FL

ANY SPARE SENTANYWHERE

Whether you're professional or dabbler. your mail orderanswer for that hard to get component AGS THE small order

specialist

(0752) 224369.AGS Electronics, 19 Farrloodon Road. Plymouth P1.4 9E11

QUALITY GUARANTEED QUALITY GUARANTEED

4HAMBLEDON TV + VIDEO

UNIT 7E

ARGYLE INDUSTRIAL ESTATE

(ARGYLE STREET SOUTH)

BIRKENHEAD, MERSEYSIDE3 MINUTES FROM BIRKENHEAD MERSEY TUNNEL.

15 MINUTES JNC. 3. M53

18P

,.. Whole range of working and non4c,

0 working TV + Video available g,=Videos serviced ready for your show- Eroom packed with instruction book Fril

and R.F. lead mc,0, New boxed '13' grade TV, Video, Midi, A:,W

=CD availableka2 ALL AT SUPERB PRICES 4

You collect or we can deliver 2CONTACT: PETER REARDON

051 647 2336QUALITY GUARANTEED

-4

QUALITY GUARANTEED

RCS VARIABLE VOLTAGE D.C. 08101 POKE SUPPLY1 to 24 volts to 2 amp. 1 to 20 volts up to 1 amp 1 to 16 volts up to1 ,2 amps D Fully stabilised. Twin panel meters for instant voltageand current IE.:lines Overload protection.F My variableCperates240V ALCompactsee 9x51,2, 3ins

la ).; £39Post f2

RADIO COMPONENT SPECIALISTSAcnEss 337 WHITEHORSE ROAD, CROYDON

SURREY, U.K. Tel: 01-6114 1665UV, Large S.A.E. Delivery 7 days Callers Welcome Closed Wednesday

VISA I

FOR FURTHER

DETAILS CONTACT

CLASSIFIED ON

01.261 5942

NEWCASTLE upon TYNEGEC Solid State 2110GEC StarlineDECCA 80 or 100 seriesFINLANDIA BasicFINLANDIA Remote

PHILIPSPHILIPSPHILIPSPHILIPSPHILIPS

G11

KT3K30 Basic

K30 RemoteK30 Text

Trade workers always availableLoads direct from source

FERGUSON TX Basic ITT Trimline BasicFERGUSON TX9 Text ITT CVC30FERGUSON TX10 Text GRUNDIG BasicDORIC Mkiv Tat FINLANDIA BasicDORIC Mkiii Basic FINLANDIA Text

I132233,Immo

Deiivery andDiscount on Quantity

VIDEOSFERGUSONFERGUSON!PANASONICHITACHI

3V293V30

NV333VT8300

P.V.S.COLOUR PORTABLESALWAYS AVAILABLE

35 Nunsmoor Road, Fenham, Newcastle upon TynePhone (091) 272 2303


NORTH WEST ELECTRONICSSTOCK CLEARANCE

YOU WON'T BETTER OUR PRICES OR QUALITY

WORKING STOCKALL THOROUGHLY CHECKED BY

OUR OWN ENGINEERS

TV'SBush T20/22,T24/6 £20Pye G11 £20Pye KT3 £30Pye K30 £30Ferguson TX £30Hitachi £20Hitachi 226 upwards from £35

VIDEO's

Sharp Electronic 7300 £55Ferguson 3V29 £70Sharp 8300 £70National Panasonic £70Ferguson 3V30 £85Sharp 9300 £85Hitachi VT11 £75

BRADFORDSPRING MILL STREET,MANCHESTER ROAD,BRADFORD 55 MINS FROM MOTORWAY

NORTHWEST

ELECTRONICS

TOBRADFORD

CRT, CENTRE

ITIITSC

1 T171,PETGARa"

Tel (0274) 308186

Fax (0274) 722229

PX MICROWAVES£15

IN STOCK NOW

TELETEXT BARGAINSfrom

£35.00G11, K30/K35 Text

9.6 TX 9/10 Textand Hitachi Text

TRADE SHOWROOMLARGE QUANTITY

OF READY TO SELLTV's & VIDEO's

Also BRAND NEW!!TOWER SYSTEMS,

MIDI SYSTEMS,PERSONAL STEREC'S ETC.

CALL INYOU WILL BE DELIGHTED!

WORKING EX -EQUIPMENTPANELS

WORKING EX -EQUIPMENT PANELSIF Con-

vergerDe-

coder

Line

scan

Power Frame

72522X 5 14 18 17 14

T26 X 5 16 20 17 X

718 7.50 5 14 20 3 14.00Philips

G11 14.50 5 12 20 20 11.50All prices Include Postage A Packing.

But + VAT

100's PX

HOOVER JUNIOR VACSALL MODELS

AND OTHER MAKES IN STOCK

WE ALSO STOCK LATEMODEL VIDEOS

3V35/44/55/65Hitachi VT33 etc.

Philips 6660/64/UR60AND MANY MORE

RING OUR HOTLINESNOW FOR PRICES

ALL PRICES ARE PLUS VAT & BASED ON QUANTITY

CHEQUES

ACCEPTED WITH

BANKERS CARD

UNTESTED STOCK

TV'SBush T20/22/24/6 £8Pye G11 £10KT3 £20K30 £20Ferguson TX9/10 £15Hitachi £10Hitachi 226 upwards from £20

MANY MORE GEC, ITT,THORN etc. from £5

VIDEO'sSharp Electronic 7300 ... £35Ferguson 3V29 £50Sharp 8300 £50National Panasonic £45Ferguson 3V30 £55Sharp 9300 £55Betamax all makes £10

MANCHESTERUNIT 3,MERSEY ROAD NORTHINDUSTRIAL ESTATE,FAILSWORTH

OPEN TelVISA 6 DAYS (061.683)

WELCOME SAT 9-5.30 4612

.

. . Quit TV Diaributor5WE VENTURE TO SUGGEST THAT IT WILL BEWORTH YOUR WHILE TO GLANCE THROUGH

THE PRICES BELOW, WE ARE SELLING THESERAPIDLY, AND WE CANNOT POSSIBLY REPEAT.

TELEVISION VIDEOSWorking Untested Working Untested

G.E.C. Starline £15 £12 3V29/30 £65 £45

K30 Basic £20 £15 3V29 EQ £60 £45

K30 Text £50 £40NV 2000NV 2010

£55£50

£45£45

TX9 Text £50 £35 NV 333 £65 £50Stereo Text £75 £60 NV 366 £65 £50G11 £15 £10 VT 8300 £60 £50

Mk III £15 £10 VT11 EQ £70 £50

Mk IV Basic £20 £15 Fisher's EQSharp 9300

£60£75

£50£55

Mk IV Text £50 £40 3V35 £85 £65FIN Basic £15 £10 3V31 £90 £75FIN Remote £20 £10 VT19 UP £95 £75

VIDEOS FOR SPARES1000 IN STOCK

£20 each in fives onlyBIRMINGHAM Tel: 021-565-1727

Fax: 021-555-5367

UNIT 4A ABBERLEY STREETSMETHWICK,

BIRMINGHAM B66 2QU

5 MINUTES DRIVE FROM J1 ON M5

Tel: 0772-655011

UNIT 34 ROMAN WAYLONGRIDE ROAD,

PRESTON PR2 5BB

10 MINUTES DRIVE FROM J31 ON M6

EXPORT ENQUIRIES WELCOME.ALL PRICES ARE SUBJECT TO 15% VAT & BASED ON QUANTITY


INDEPENDENT TELEVISION

..,IIIIIII,C919,111YAWA,FERG TX TESTED UNTESTEDall sizes £30 £20

TOSHIBA TESTED UNTESTEDall sizes £30 £20

VARIOUS COLOUR TELEVISIONSuntested £5.00

TELETEXT TELEVISION R/Cuntested £30.00

DIRECT LOADSAVAILABLE

VIDEO

TESTED

ONLY

KT3 TESTED UNTESTEDall sizes £30 £20

GRUNDIG TESTED UNTESTEDall sizes £30 £20

VARIOUS COLOUR TELEVISIONStested £10.00

£55TELETEXT TELEVISION R/C

Tested £50.00

ACCESS & VISAACCEPTED

THESE ARE ALL GENUINE PRICES ONE & TWO'S INCLUDEDJUST BRING YOUR TRADE CARD

WE ARE EUROPE'S LARGEST EXPORTERS OFRE -FURBISHED TELEVISIONS & VIDEOS

ALL ENQUIRIES WELCOMETELEX: 378414 BLBIRD G FAX: 0602 861027

ALL OUR TELEVISIONS AND VIDEOS ARE IN GOOD ORDER WITH CLEANCABINETS WITH WORKING REMOTE CONTROL. IF YOU ARE DISSATISFIED YOU

MAY RETURN THE GOODS WITHIN SEVEN DAYS.

NOTTINGHAM(10,000 sq. feet Warehouse)

Unit 3-3a Meadow Trading Est.Meadow Lane

Near Notts County Football GroundIn National Tyre Yard,Nottingham NG2 3HQ

Telephone:

(0602) 864627

SHEFFIELD(6,000 sq. feet Warehouse)

2 min from Junc 34 of the M1Unit 17,

Meadowhall Trading Estate27 Amos Road

Sheffield 4Telephone:

(0742) 422633888 TELEVISION SEPTEMBER 1989

ELC EAST LONDON COMPONENTSAUDIO TELEVISION VIDEO

COMPONENTS AT VERY KEEN PRICESTEL: 01.472 4871

VCR SERVICE SHEETS £4.00pVIDEO HEADS

JVC 3HSSVJVC 3HSSVAJVC 3HSS4VAPANASONIC 3HSSNPANASONIC 3HSSU1NPANASONIC NV366PANASONIC NV730PANASONIC NV777HITACHI VT80009000HITACHI VT1113/63SONY C5/C7SHARP 3HSSP

VIDEO IDLERSJVCVT 9300VT 11 14 17VC 0005GEZZVC 0006GEZZNV 2000NV 333IDLER TYRES FOR MOST MODELSUNIVERSAL LAMPSJVC LAMPSSHARP LAMP 50PUNIVERSAL TRIPERS 25.000PINCH ROLLERS FOR MOST MODELS 22.959

ON/OFF SWITCHESSONY ON/OFF SWITCH 22 /59G11 ON/OFF SWITCH WITH REMOTE 22.000TX10 ON/OFF SWITCH WITH REMOTE 22.009

C14.959C24.950£40.959£14 95pC20 959C39 95pC44) 95p05 95pC19. 99p219.99p219.990221.990

24.75922.95921.959

21.95p95p

21.

21.60921.509

50P3017

CASSETTE MOTORS6-9-12-13.2 VOLTS 133.00p

CASSETTE HEADSMONO CASSETTE HEAD 9941 MINIMSTEREO CASSETTE HEAD 21.110. 00333 E AlpTY10 FOCUS UNIT C5.99p Nµ777RUBBER BELT ALL SIZE 1.2x 1 2 20p NV -2000 kr/RUBBER BELT ALL SIZE 0 5. 3 409 NV -7000 napRUBBER BELT ALL SIZE 0 5 . 5 80p NV -8500 12.1110

ELC EAST LONDON COMPONENTS63 PLASHET GROVE, EAST HAM,

LONDON E6 'IAD. TEL: 01-472 4871OPEN 9AM TO 7PM.

two minutes walk from Upton Park Tube StationPLEASE PHONE US IF WHAT YOU NEED

IS NOT LISTED AS WE HOLD THOUSANDSOF ITEMS IN STOCK

ADD 70p P/P ADD 15% VATALL GOODS DESPATCHED SAME DAY

PRICE SUBJECT TO CHANGE WITHOUT NOTICEVISA ACCESS ACCEPTED

VIDEO BELT KITS

VS-2EG SEG SOp

VS -1000 6.40VS-73

VS-9700 E1.85p

REIMvBS-7000 12.859VBS-9000 159

SNIY0VIC-5500 01.189VI C-9300 22.509

&440PVC -6000 01.0130V46100 01.50pVC -6300 21.70p

VC -7000 51.509VC 8300 21.50pVC -9300 21.009

SONYSL -05 C7 21.409SL -8000 1:2509

TOSINSAV-5250 C 215pV-5475 21.50pV-5480 C1.60pV-7450 21.409V-8600 11.259

VT -5000 21.60pVT -11 11.009

JYCHR -3300 12.000HR -3330 12.1109HR -3360 82.00pHR -4100 12.109HR -6500 C2.409HR -7200 180HR -7650 E1.599HR -17N 21.809

COMPUTER IC'S41164164Z80CP1J

6502651065266581

656962648701

906114901225901226901227273227642712827256275128255

1500125p3509595949596959

1695p3509525p4509350p

795p6959300p325p

350p4250995p3259

HITACHI MODULE51M6251 500p

74LS SERIES

74 SERIES4000 SERIES

IN STOCKTHYR1 S TO R S

TRIACS

OP AMPS

LOW PROFILE

SOCKET8pm 5014pin Op

20pin24pm28pm40pin

9P12p14p180

20P

2SP

BC107

BC108BC212LB0137801398E4228E423

13U208A

1311208D

BU500BU508ATIP41CTIP42C

2N3055203773BT119

BT151

BR30325072525013972SD1398

10.

1009

19

20.200

2517

25075p950

95p95025p25p380

11591100

6591259350020002009

AN203 229pAN210 175pAN214 1

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209 2SO-401

240p 250-426

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359 25D-438100p 25D-468309 25D-476

250p 2S0-478659 25D-525

2709 2SD-526609 2SD-60060p 25D-61260p 25D-61375p 25D-66915p 25D-716309 250.71830p 2SD-73325p 2SD-74530p 2SO-74875p 2SD-761609 2SD-822825p 2SD-837

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509

LOW COST

COLOURS

10 SETS FOR

£50

VIDEO 2000PHONE FOR

AVAILABILITYFROM

£15 EACH

G11PYE-PHILIPS20"-22"-26"BASIC R/C

TEXT FROM

£12

USEDVIDEO SPARES

AVAILABLEPANELS, DECKS

ETC.

PHONE US

UP TO 200 FULLY WORKING COLOURSETS. ALL FULLY TEST RUN.EXCELLENT CABINETS, BASIC

REMOTE, TEXT, ALL ON WORKINGDISPLAY PLUS VCRs

CALL OR PHONE US

TELETEXT

TV's

FROM

£29

VHS VCR'sELECTRONIC

FROM

£40

DIRECT

LOADS

ALL

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ASK

KT3 - K30

Mark 4 RediffusionSONY - HITACHI

PANASONIC - ITT,etc.

Basic RemoteText

GENERAL FACTORS (10am - 5pm Mon - Fri)UNION ST, OFF ST SEPULCHRE GATE WEST,

DONCASTER DN1 3AE(21/2 miles A1M Motorway) for M18 -M1

TELEPHONE 0302-349583 24hr ANSAPHONEFAX 0302-349510 MOBILE 0836-368878


Access MIDLANDTELEVISION

WORKING C.T.V. WORKING C.T.V.Philips KT3 & K30 £15 FERGUSONPhilips KT3 & K30 Text £56 3V23 £65Bush T20 & T26 £15 3V30 - 8940 £69Grundig 7400 from £25 3V31 £78Toshiba £29 3V32 L/P E85

Sanyo £40 3V353V43 L/P Hi/Fi

£78£100

THORN 3V65 £100

PHILIPS88009000

£6£15

VR6462VR6560

£78£85

9600 R/C £15 VR6740 £1009900 R/C £20 VR6760 £100TX9 & TX10 BasicTX9 & TX10 R/C

£27£33 TOSHIBA

TX9 & TX10 Text £56 V65 £78Stereo Text £95 V72 £100

FST Text £95 V75 £100

FST Stereo Text £105 GRUNDIG VHS £78

We specialise in working and guaranteed Thorn & Co-op stock. No customer too large or small. Ourcollection days are Wednesday, Thursday & Friday. Call Steve or Keith for stock availability. SPECIALOFFER, free delivery in Leicestershire, Warwickshire, Cambridgeshire, Lincolnshire, Northamptonshire andLondon areas.

ALL RIC & TEXTSETS SUPPLIEDwmi HANDSETS

4 MINS J22 M1Nationwide Delivery Service Available

11 MARKET STREET, COALVILLE, LEICS.TEL: (05301 810836 or 810837

ALL PRICESSUBJECT TOVAT AT 15%

REBUILTTV TUBESDIRECT FROM THE FACTORY

WHERE THE BEST COSTS LESS

FINEST QUALITYLOWEST PRICESSPECIAL DISCOUNTS FOR

BULK BUYERS2 YEAR GUARANTEE, 4 YEAR OPTIONAL

ALL MAKES INC. SONY

NATIONWIDE DELIVERY

PHONE NOW FOR FREE LISTS

SHERWOOD TUBES LTD60A PEVERIL STREET, NOTTINGHAM NG7 4AH.

Tel. 0602 786896

NOTICETO

READERS

Whilst pricesof goodsshown inclassified

advertisementsare correct attime of closing

for press,readers areadvised to

check with theadvertiser both

prices andavailability ofgoods beforeordering from

non -currentissues of the

magazine.

ADMIN TELEVISION

K30 KT3 £20 INCGEC BOW/FRONT £20 INC

' ITT TRIMLINE £20 INCTOSHIBA £20 INCMK 4 DORICS £20 INCALL TEXT £45 TO £65 INC

: PORTABLES £40 INCPYE G11 BASIC £14 INCTX9s/10s 1E11 0 INCPHILIPS G11 BASIC £12 INCJAPS FROM £10 INC

MK3. GEC T20. ITT. DECCA80s/1 00s

£111 0 INC

PHONE

051-548 4414UNIT J, ADMIN BUILDINGS,

KIRKBY, LIVERPOOL L33 7JX

BUSINESS FOR SALE

WIRRALTHE LEISUREPENINSULA

Large freehold, main road location, Retail/W/Shop premises.

Excellent service income, extensive scopefor sales.

Property + Business £42,000 SAV toinclude valuable fixtures and fittings.

Details (Principals only):

P.O. BOX 254

ME BEST ELECTRONIC COMPONENT, AUDIO AND

VIDEO ACCESSORIES BUSINESS IN THE SOUTH EASTEstablished and in the same hands 15 years 2 freehold lockup shops withrear stores, good trading position just off High Street, Ramsgate, Kent.Parking outside. Price includes fittings, fixtures. goodwill and lots of

essential stock, help from the present owner when taking over.

ALL FOR £75,000

Phone 0843 594072 24 hours

WANTED

WANTEDSubstantial Quantities

of Good UsedFerguson TV's20"122" G (2 or 3)20"122" H (2 or 3)

OR ANY F.S.T.Tel. Mr Hicks 0707 336188


END OF RUN LINES. Surplus stock. Mail order WANTED EX -RENTAL T.V.s and Videos, any quanti-returns Audio, TV, Video, small appliances or ex- ty, quick collection. Cash paid. 0742 312832.rental or P/X models TV, Video. Any quantity consid-ered, contracts preferred with rental firms direct. Phone WANTED: MACDONALDS RADIO AND TELEVI-LORRAINE on 0532 444195. SION Servicing Book 1986-87. Tel. 0254 60333.

SITUATIONS VACANT

**************Rank Video Services

Europe's Leading Video Duplicator

ENGINEERSWe have various positions available for maintenance engineers. Whilst a

video engineering background is preferable, anyone with suitableexperience will be considered.

A generous salary and good career prospects are offered.Please telephone Adrian New on 01-568 4311 or send him your C.V. at the

Personnel Department, Rank Video Services Ltd.,Phoenix Park, Great West Road,Brentford, Middlesex TW8 9PL.

Part of The Rank Organisation

SKILLED TECHNICIAN WANTED. Good pay rates METERS. Reconditioned 10p/50p available fromapply. Jomill Enterprises, 173 Dalston Lane, E8. Tel. stock. Contact THE METER CO. (Poole) LTD.01-533 2229. (0202) 683498.

FIND FAULTS FAST!with this efficient battery -powered SIGNAL TRACER. Muchquicker to use than a 'scope, especially at millivolt levels!Listen clearly to tape head signals. Trace through tuners,IF's, switchilg and AF -amps with ease.Complete ani ready to use, with AF and RF probes £37.50

inc zarr + £2.35 per battery. VAT extra.COLEBOURN ELECTRONICS

20 Folly Lane, St Albans, Herts. AL3 5JTor w el. 0727 44785 for more details

TEKTRONIX 454 OSCILLOSCOPE. 150 MHz de-layed sweep. Manual. Carrying case. Probes VGC,£295 cash, PX Bush TV22. Tel. Basingstoke 56732.

LOGIC ANALYSER THURLBY LAI6OB with threeL031 data pods and three LGO9 grabber leads GWOVUX:l o.n.o. inc VAT. COTSON ELECTRONICS 021429 3797.

PRIVATE RETAILER has excellent part exchangecolour TV's & videos to clear on regular basis. 0494814317.

TEKTRONIX 564B STORAGE OSCILLOSCOPE30 mhz Bandwidth 3A6 + 3B3 Time base modulesperfect condition £200.00. Tel. 0495 215210.

REFURBISHED HAND SETS FOR SALE. From f4.60+ VAT. For details phone 0532 444195.

WHY NOT FAX YOUR

COPY TO US ON:

01-261 6704

FOR SALE

SATELLITE TELEVISIONVIDEO COURSE OF INSTRUCTION

A NEW PRODUCTION FOR MICROFORGE BY FLINTDOWN C5 TVCOVERS : SATELLITE FOOTPRINTS AND POSITIONS

MICROWAVE TECHNIQUESVIDEO MODULATION (PAL, DMAC, ETC.)ENCODING AND ENCRYPTIONINSTALLATION OF DISHES AND AIMINGHARDWARE OF INSTALLATIONAND MANY OTHER IMPORTANT FACTS YOU NEED TO KNOW.

INTENDED FOR ALL INVOLVED IN THE SELLING & INSTALLATION OF DOMESTICSATELLITE SYSTEMS.AVAILABLE ON VHS, BETA OR V8 CASSETTES AT £39.95 incl.vat (Access or Visa)

INFORMATION PACK AVAILABLE FROM

MICROFORGE LTD., 339 CLIFTON DRIVE SOUTH, ST. ANNESLANCS. FY8 1LP TEL. (0253) 725499


AERIALS

J.W.Hardy231 Station Road, Stechford

Birmingham B33 8BB 021-784 8478

U.H.F. Aerials Coaxial CableGroup, A. li. I1 ,( 14.

10 !Lenient Aerial 2.2518 Element End Mount 3.47IN Fie with Support Arm 4.38Diamond DCI 0 Boxed 6.95Diamond DC18 Boxed 9.95Diamond Colour God 16.95Antiference X(r8 20.50Anliference X(414 32.95Set Top Aerial ST6 2.30

N .H.F. Aerials7953644806.957.95

12.95

,Oft Stand .N ISrdt kt

080

N lastsAllot

thiinne LashingStandard Repair Ka 1.28S meter wire Coil 0.80Corner Plates 0.064.54"7 Bolt & Nut 0.1411/4"V Bolt & Nuts 0.1221'2"V Bolt & Nuts 0.22

(homer Brae ken6" ri 6" Prcssed 0.686" h" Welded 0.986" tr Welded 1.45717" it 712" Welded 2.15131/2" Cradle Welded 2.35Double LaNhing Pair 2.65

Chin] PS

FM Omni Heavy DutyFM Dipole Heavy DutyFM 2 Ele. Heavy DutyFM 3 Ele Heavy Duty....FM 4 Ele. Heavy Duty..FM h Els. Heavy Duty

12's I" Loft Slam)24"s I" with 90° Bend 1 25

'111%1"1141kg16' x2' lug211' x 2" 14g

1.956.95

16.9526.50

Aerial to Mao Clamps15rnm tor 0.30Cross Clamp 0.65V Bolt & Nuts 0.12

Mao lo Muo Clumps1" io 2" Cross Clamp 0.751 ICY.' ttr 2" Universal 1.60

Amstrad Satellite Now in StockSRX1011 f154.50 SRX2111 /199.00

Priced in 100 Metre Lengths allCables rim be supplied in 100 tic

250 Metre LengthsAttenuation ligers are Approx a1

900 M1H/100M.

Voles Sander('55112-1Jµ Brown 13.50C55W 21dB White 14.95(15613 17dµ Brown 13.95CSkW 17411 While 13.95("17S 2IdB DS 30.40(-1101119d13 DS 30.40(7125PE 154113 DS 52.95LT167P1-. 1I4µ DS 76.95CTI67RBS I I dF1 CC, 84.95RA. R( & URM 1 ypes PHA

De/ra & Pope CablesTRli$kHtl$)F 28.95TRI25PE/H47TR167PEH43 64.00

('able AccessorioCable Caps

5.6 & 7inm per 1011Stem Black per 100I lrnm Black per 100

Adhevive Tape20M V4" BlackIIIM Sell Amalgamating

Coble ( onne, tor,Coax Plug Alloy per 1111Coax Plug Alloy eachCoax Cupp's, NI- SiCoax Cuppler eachF Screw On I nun

Auenuators

0.600.750.95

0.322.99

12.950 175.950.170.20

5.h.122. Ili& 24dB 100

Per Leath2M Plug to Plug 0.602M Plug kr Socket 0.66

Wall Fixings14elded Wull Brut ken

h"xh"Painted 097x Lialvanised 197

6"491' Pairned 1489"x9 'Painted 2.26irTek K Painted . 3.7518"T&K Painted 47518" T& K Galvanised 745

5.3512.95POA

24" T& K PaintedIn' Tripodppod GalvanisedDrills. Plugs. Screws

AmplifiersAntiterence r)\4 29.95

Wo/ser l.lerrrorurxThe Full Range of Domestic &

Professional Equipment isAvailable from Stork.

llw following list are the MastPopular Lines

Set Back 12.41B 9.99Two Set 2 ri 7dB 9,99Three Set I2&9411 12.99Four Set 1..9 & Nib 16.9902Nk P2112N1B 16.99Arnenhyst UnItdBm 120.45Arnerthyst W Nk113rnV 154.60

1 W. Hard,' COMMIIIIII anon,4 Way Amplifier 2dB 12.998 Wak Amplifier 2dB 19.95Silver 2Ik1B 46dBmV 32.56Silver 28s1B 4PdBmV 38.95Booster 21kIB 54dflinV 49.50Booster 20s11i htklBinV 75.50

Splitters & 'I' I nitsWoLser Hearin/it

Die Cast 1 I mils 3.75-8.82Die -Cast Splitters 7.14-10.08Die -Cast Outdiarr Lid 0.99Indoor I id 0.55lane Terminator 7Sohrn 0.40Mini Splitters POAMini 1 t Init. 2 Was 4.50

Altai In Door2 Way '1 0.65110(CW, 1 45-2.25

14( Aphners2Vrot Resistive 2.002 Wan I ndustive 2.653 Way ResistiveDiplexer '111-N11F 2.65Diplex,A1E. 2.651)ipleser KAT) 2.65

WE ACCEPT ACCESS

COM Outlet Plates0.46

Altai Sur taco 1 our 1375Altai l'lush Wall Seeker 0.65A hal Flush Twin 0.95P0111 Single Isolated 2.1611(311.) 12to 3841B 3.31-5.71P0.21.1TASFM Iso 3.44-3.75P023/ RS I Show Room 3.75110211 Roo 32dB 4.44-4.06'Drunk Mounting Socket 3.00

Al priCe, Owned are plus VATCar ier l'p to 25kg 6.50Car ter Up to 51kg 9.50I'+'fin small light parcels 2.50

SATELLITE TVRECEPTION EQUIPMENT

LOB s. Receivers. Dishes. polar mounts andaccessories

90cM dish, mount and feed assy withadaptor for Marconi LNB 089.00C and Ku band LNBs from C49.00F connectors - 10 for C2.00 .

NA and FM adaptors C1 2020dB line amps C14.00Prices encl. VAT - Send SAE for leaflets.

DXAM ENNAI

KESH ELECTRICS LTD.Main St., Kesh, Co. Fermanagh, N.I.

Tel. 03656 31449 Tlx 747412

BOOKS & PUB's

IM COLOUR DEAD SET TRIPPING

I FAST FIX IIlf you keep back issues of Television then read on. Fast Fix is afcomplete card filing system, listing the symptoms of television

aults published in Television Magazine under TV Fault Fidingnd Service Bureau from 1981-1988 inclusive. Over 500 cardsand thousands of faults are collated and indexed undermanufacturers name and then chassisimodel. An example is aPhilips K30 with a blank raster, look on p744/Aug '88. For allthose faults you know you have read about but cannotremember where. Fast Fix is a must.Ready boxed, quick to use and easily updatable Fast Fix couldpay for itself with lust one successful repair. Nice C35.00.

Send chequeiP 0 payable toA. G. Humphreys,

13 Mansfield Avenue,St John's Park, Hawarden, Clwyd.

Tel: 0244 532961

EATS LINE OUTPUT TRANSISTORS FRAME COLLAPSE

LET

TELEVISION

SELL

YOUR

PRODUCT

FOR

YOU

RING

NOW

FOR

FURTHER

DETAILS

01.261

5942

TELEVISIONSTUDIO SYSTEMS

ENGINEERINGThis BTEC validated Higher National Diplomacourse provides a unique opportunity to study foran advanced level engineering award.Possession of this award may qualify a student for direct entryengineer status with the BBC or an ITV broadcast company.

The college installation uses a wide range of the most up to datebroadcast standard, television studio equipment and is availablefor use in the various study areas.

The reward for two years intensive study, is offers of employ-ment from TV broadcast companies, facility houses etc atattractive starting salaries.

If you have an interest in the design, performance evaluation, andmaintenance of Television Studio systems such as video taperecorders, audio systems, TV cameras, digital systems ofmicroprocessor control systems, then apply to the addressbelow for further information.

Ravensboume College of Design& CommunicationSchool of Television

Wharton RoadBromley BR1 3LE

Telephone: 01-464 3090

TECHNICAL PUBLICATIONS !

SALORA TV's (Finlandia)

Digital Television :-

Operation, Servicing Et Circuit Descriptionof the Salora 'M' ChassisPlus

The Granada series of Salora/FinlandiaTraining Course Notes.

XZ1 series & Service GuideYZ series Er Service GuideBZ series Et Service GuideCZ series Er Service GuideDZ series Et Service Guide

PlusVHS -VHS -VHS -VHS -

H ChassisJJK

L

£15.50

£8.50£8.50£8.50£7.50£7.50

The System £ 5.50Non Standard Playback £ 8.50C- Format £ 6.50Hi-Fi Sound (with video programme)£11.95

UK Rental & Retail LtdTechnical Training Department

PO Box 31, Ampthill Road, Bedford MK42 9QQTelephone: 0234 226486, Fax: 0234 22609

A Member of Granada Group PLC


Ku BAND SATELLITE TV £23.00

SATELUTE AND CABLE SCRAMBLING ANDDESCRAMBIJNG. Basic theory 2nd Ed. 280p f19.00

VIDEO SCRAMBLING & DESCRAMBUNG. Advanced theoryand circuits, 246 pages by Graf & Sheets £21.00

EUROPEAN SCRAMBUNG SYSTEMS. Circuits, Tactics &Techniques, by J. McCormac, fascinating information forthe service engineer £29.00

HOME SATELLITE TV INSTALLATION VIDEOTAPE, 40 min-utes. VHS PAL £27.00

SATELUTES TODAY, A Short History £8.00

HIDDEN SIGNALS ON SATELLITE TV. Teletext, telephonechannels, teletype 00.00SATELLITE, OFF -AIR & SMATV. By F. Baylin 05.00WORLD SATELUTE ALMANAC. All footprints, 650 peges,second edition by M. Long 02.00WORLD 1990 SATELLITE ANNUAL. By Mark Long. Latestinformation £31.00

SATELLITE TV INSTALLATION GUIDE. 2nd edition by JohnBreeds E12.00

Price includes P&P UK. Airmail Europe f2. Outside Europe £6.00 extra per item.Pay by cheque, ACCESS MASTERCARD, or COD J. VINCENT TECHNICAL BOOKS,

24 RIVER GARDENS, PURLEY, READING RG8 8BX. TEL 0734 414468 (Answerphone)

SERVICE SHEETS

ACCESS TECHNICAL INFO SERVICES (T) MASTERCARD

76 Church St., Larkhall, Lanarkshire ML9 1HEEUROCARD

Phone 0698 884585 Mon -Fri 9-5, 0698 883334 any other time FOR FAST QUOTESIMMEDIATE DESPATCH of all Phone Orders by ACCESS, etc. or to Listed Customers

WORLD'S LARGEST COLLECTION OF SERVICE MANUALS . . from £3.50 to £50 . . Most unobtainable elsewhere

Every issued FULL SIZE SERVICE SHEET in stock; CTV's or Combinations £3.50 Singles £2.50: Plus LSAE

LSAE for any Quotation, plus FREE large Catalogue, STREE Review, Pricelists, etc.

Almost any original Video Service Manual from J.V.C. or Siemens at £15 each

A small selection from titles in stock . many only obtainable from TIS via mailorder POST FREE

Practical TV Repairs by Tunbridge £12.95 Newnes Guide to TV & Video Technology £8.95

Mobile Radio Servicing Handbook £25.00 IEE Wiring Regs Explained & Illustrated £7.95

Practical Radio, Repair & Service Course £9.95 Servicing Personal Computers by Tooley £20.00

Video Recorders, Servicing by Beeching £20.00 Spectrum Repair & Service Guide £5.00

Oscilloscopes, How to Use/How they Work £6.95 Servicing Radio, HiFi, TV Eqpt by King £9.95

Computer Engineers Pocketbook £9.95 Refrigeration & Air Conditioning £7.95

1987 Brit CTV Repair Manual by Tunbridge £8.95 Domestic Eqpt Repair & Service £16.95

Principles of Compact Disc £2.95 VHS Common Faults £3.50

Video Techniques 2nd ed by G White £30.00 Practical Transistor (Clearance offer) £1.95

Audio & HiFi Engineers Pocketbook £9.95 TV & Video Engineers Pocketbook £9.95

Questions & Answers on Radio Repair £4.95 Audio Equipment Tests by King £12.95

Video Service Manuals each £15.00 Colour TV Service Manuals each £9.50Integrated Circuits Technical Data Manuals from £5 to £7.50 each, full list on application

12 Big Colour TV Repair Manuals covering the British & many Foreign from 1970 to 1988 £99.95

20 Fault Finding Booklets covering most Videos from 1979 to 1986 to match circs below £48.00

The Set of Thom's own 10 Video Circuit Description Manuals from 3V00 to 3V43 £40.00

10 Giant Binders containing Circuits & Layouts for Brit & Foreign CTV from 1974-1989 £225.004 Giant Binders containing Circuits & Layouts for most Videos from 1979 to 1986 £95.00

Send now forFull details of our Famous Complete Integrated Repair Systems for 'Ns, Videos & Domestic Equipment

These systems contain all the circuits & data needed to cover repairs and servicinc for anyone in business or wishing tostart up their own business. All the Diagrams, Repair, Service & Technical Data needed. At a fraction of the normal cost of

buying such data. Terms are also available.

The Circuit/Layout Set for almost any Video . . . £7 each, C7Vs . . . £4 each

For £3 . . . Comprehensive Service Manuals & Sheets Catalogues PLUS 1988 Chassis Guide & £4 Vouchers

SERVICING COLOUR TELEVISION by Gordon J. King £14.95

Completely reprinted, only obtainable from T.I.S. NOW

SERVICE MANUALS &CIRCUIT DIAGRAMS

Available for Colour Televisions, Mono Televisions,Video Recorders, Audio equipment, Music Systems, Car

Radio's, Cameras, Test equipment etc etc.Over 100,000 stocked, originals and photostats.

LSAE Enquiries with Make/Model wanted.FREE catalogue Unique Repair and Data Guides for

LSAE.MAURITRON (TV)

8 Cherry Tree Road, Chinnor, Oxfordshire, OX9 40Y.Telephone: (0844) 51694 anytime.

COPY DATE FOR OCTOBERIS 22nd AUG. PUBLISHED SEPT.

GERMAN SERVICE SHEETSPECIALISTS

Our connections are world -aide. \kc furnish amkind of Cir:rman. European and Japanese servicesheet of manual. Thousands of different sheets andmanuals it' stock. For any enquiries:

DONBERG ELECTRONICSSchoolmasters House, Rannafast,Co. Donegal, Republic of Ireland.

Phone: 075 48275

ALARMS

PROTECT YOUR STOCKUse one of our economical loop alarms.Cmos circuit - Low consumption BritishMade and manufactured LP1 Loop Alarm£16.50. 1m Loop Sections £0.60 each. Allprices irclude VAT. Please add £1.50 post,cash with order.

Orders to

Mr S. Taylor, 8 Park Avenue, Markfield,Leicestershire LE6 OWA

MISCELLANEOUS

405 TVs. - Bush TV22, etc.As original or converted to 625 line monitor.

,=arty radios and 78 RPM players - send for list.NE REPAIR AND REBUILD

JOSEPH URBAN & SONS44 HIGH STREET, ANSTRUTHER, FIFE

Telephone: 0333 310471

NEW ANA.) SECONDHAND TV VIDEO AND AUDIOSPARES. Panels and components, flea record decks.£.I/ ea. aso large stocks of Bush stereo units (somedimagedj. £12 ea. Tel. 0704 76825. Fax: 0714 768.28inytime 24 hrs, 7 days.

The Theory andPractice of PAL Colour

Television in threeimportant Video

Cassette ProgrammesPart 1.

The Colour SignalPart 2.

The Receiver Decoder[Part 3.

Receiver InstallationVHS***V2000***BETAMAX***UMATIC

For full details telephone

0253 725499 (Day)0253 712769 (Night)Or send for precise details

FLINTDOWN CHANNEL 5339 CLIFTON DRIVE SOUTH,LYTHAM ST ANNES FY8 1LP

lencloding this advert)

NAME

ADDR SS

TEL


j MUTERBMR-90-Hi-EcEurope's most NEWfrequently boughtCRT -Regenerator -Analyzer;pays itself within 4 weeks;regenerates picture tubes evenbetter; removes shorts filament -cathode; cathode - grid 1, grid 1 - grid 2; carries gas to getter; 131 adap-tors available; has 11 heating -voltages; new adaptor -list with more than8000 tubes -types; also available: BMR 107 Regenerating -Computer andBMR 44 Regenerating -Automatic -Machine. Please, ask for catalogue.

NMtoes *

United KingdomBlendown Ltd.Bank House. 17 Rhos Rd.Rhos on Sea, Clywd,Wales, Tel 0492-49246Fax 0492 47880West -Germany (FRG) Ulrich

New Zealand IrelandTDON Ltd. Dbriberg Electronics5 Rangipawa Rd, SchoolmastersOnehun a, Auckland, House, Ran afast,Tel. 668-907 Co. DonegalFax 646-216 Tel: 075-48275

MOter, 4353 Oer-Erkenschwick, Fax 02368 57017

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SHARP GRUNDIG PHILIPSFidelity and Thorn

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0734-876444or

061-682-1415Same day despatch before 2.30 pm

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Willow Vale Electronics LtdSole UK Parts distributor for Grundig and Sharp. Main Philips UK Distributor

TELEVISION CLASSIFIED ADVERTISEMENTLINEAGE 55p PER WORD (MINIMUM INSERTION £10). 5% DISCOUNT 6 INSERTIONS.

10% DISCOUNT 12 INSERTIONS. SEMI -DISPLAY £8.50 PER S.C. CM. (MINIMUM 2.5 CMS)£8.10 PER S.C. CM. 6 INSERTIONS, £7.60 PER S.C. CM. 12 INSERTIONS. a.

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cc SAMSUNG. PHILIPSlift ALL WORKING & GUARANTEEDmi 6"/14"/20"owe R/C 30 Chan CTV's2 21"/24"/27" FSTu) STFTX CTV'scx

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FOR LISTS' AND FURTHER DETAILS: -rel. KEVIN GARDNER (0274) 6E019E/665670:1043 Leeds Road, BradfordF=302741665246AisoAr : Unit3,Boundary k,IndEst.,Liverpool Rd, Irlam,Manthester 061 777 9501

Mill, Peacock CrossBurbankRd, Hamilton.Trading698)28214


MAIL ORDERADVERTISING

British Code of Advertising PracticeAdvertisements in this publication are required toconform to the British Code of Advertising Practice. Inrespect of mail order advertisements where money ispaid in advance, the code requires advertisers to fulfilorders within 28 days, unless a longer delivery periodis stated. Where goods are returned undamagedwithin seven days, the purchaser's money must berefunded. Please retain proof of postage/despatch asthis may be needed.

Mail Order Protection SchemeIf you order goods as a private individual from MailOrder advertisements in this magazine and pay bypost in advance of delivery, Television will consideryou for compensation if the Advertiser should becomebankrupt or go into liquidation provided:

(1) You have not received the goods or had yourmoney returned; and

(2) You write to the Publisher of Televisionsummarising the situation not earlier than 28 daysfrom the official on sale date of the publication andnot later than three months from that date. (Pleaseretain proof of payment).

Please do not wait until the last moment to inform us.When you write, we will tell you how to make yourclaim and what evidence of payment is required.

We guarantee to meet claims from readers made inaccordance with the above procedure as soon aspossible after the Advertiser has become subject tobankruptcy proceedings or gone into liquidation up to alimit of £4,050 per annum for any one Advertiser soaffected and up to £12,150 per annum in respect of alladvertisers.*

This guarantee covers only advance payment sent indirect response to an advertisement in this magazine(not, for example, payment made in response tocatalogues etc., received as a result of answering suchadvertisements. All display advertisements arecovered but only boxed trader classifiedadvertisements are included. Advertisements as looseinserts are not covered.

HOWHOWLong

it can take to locate faults on VHS VideoRecorders.

HOWCan I avoid tying up all these vital hours?HOWCostly it can be to buy individual manuals for

different models.

HOWExhaustio9it is when days pass and the same

video is still on the bench, problem unsolved.

HOWWhen you find a fault after hours and hours ofsearching, you realise it was a very simplecause.

HOWCanI take more work on and gain greater

profits in less time?

HOWI wish someone would make up a manual withhundreds of 'stock' and more difficult faults tosave me the headaches,

HOW ABOUT THIS THENTechnical Advisory Systems have collated and indexedhundreds of 'stock' and the more difficult faults, along withsymptoms/data on many popular models including:

FERGUSON - PHILIPS - JVC -PYE - PANASONIC - HITACHI -AKAI - MITSUBISHI - SHARP -

SANYO - FIDELITY -ETC, ETC, ETC,

You will wonder HOW you managed without this powerfulaid, containing

SYMPTOMS/DIOGNOSTICS/FAULTS/PROCEDURES/MODIFICATIONS

All well PROVEN as a great TIME SAVER andESSENTIAL for all service depts, and personnei, quickand easy reference and easily updated on our monthly

subsdption system.

ALL THIS STILL ONLY

£73.00 (inclusive)NEW

Tremendous value none -updating book version

ONLY £35Regular monthly up -dates still only £30, per year, payment

with order only to:

TECHNICAL ADVISORY SYSTEMS33 FOXCOTE, ASTLEY VILLAGE,

CHORLEY, LANCASHIRE PR7 1XE.Telephone: (02572) 75667

" o0 SALE ITD.

QUALITY USED T.V.& VIDEO

COMPLETE RANGE OFT.V's AND VIDEOSMOST MAKES AND

MODELS AVAILABLE

STOCK ARRIVING DAILYT.V's from £3.00

Videos from £30.00

Free Delivery Serviceto mast areas of the U.K.

UNIT 80, BARRACKS ROAD,SANDY LANE INDUSTRIAL ESTATE,

STOURPORT-ON-SEVERN,WORCESTERSHIRE DY13 9QB

Just 10 Mins fromM5 Junct. 6 Worc's North

02993-19642 or

79643

INDEX TO ADVERTISERSADM Electronic Supplies 884Admin Televisions 890Aerial Techniques 843AGS Electronics 885Amrick Visions Wholesale 872Apollo 840Audio Electronics 822Audio Visual Services 869A -Z Electrics 875

Bi-Tech 866Bi-Tel 821B.K. Electronics 818Blendown Ltd 894Bolton Metropolitan College 882Broughfame Ltd. 874Budget TV 885Bull, J & N Electrical 823

Campion Wholesale Ltd 895Carter, John (Electrical) Ltd. 874Central TV & Video Wholesalers Ltd 883Centrevision 881Chromavac Ltd. 821Chromavision 872Clearvision 876Coleboum Electronics 891Coxon, Ken, T.V.'s 878Crewe Wholesale N 868C.T.V 884

Display Electronics Group 879Donberg Electronics 893

East Cornwall Components 824East London Components 889Economic Devices 856, 857Electrosmart 894Express TV Supplies 881

Flintdown Channel 5 893

Gamma U.K. Ltd. 880General Factors 889G.G.L. Components 820Glasgow Wholesale TV 881Grandata Ltd 814, 815, 816

Hambledon TV & Video 885Hardy, J.W. 892Highsurge 868Holme Service Ltd 884Humphreys, A.G. 892Hussain Central N 877

Ibex 822ICS 819Irwin Electronics 867I.T V C 888

Kesh Electrics 892Kitvision 822

LRC (Spares) 880

Manor Supplies Cover IIMarstall Ltd 882Mauritron (TV) 893Microforge Ltd. 891Midland N's 890

NGK Electronics 870N.G.T. Electronics Ltd. 882North West Electronics 886

Omega Electronics 855

Papworth, E. 882Phoenix TV Wholesale 821

Powell, T 879P.V.S. 885P.V. Tubes 817

Radio Components Specialist 885Rank Video Services 891Ravensboume College 892Relay Omagh Ltd. 880Reliable Wholesale N 819Repo. Ltd. 884

Semple Service 875Sendz Components 830, 896, Cover III, Cover IVSherwood Tubes Ltd 890Sonic N Distributors 887Southside TV 880Stewart of Reading 881Suffolk N & Video 885Supertronics 870

Taylor Bros (Oldham) Ltd. 833Taylor, S.P. 893Technical Advisory Systems 895Technical Information Service 893Teleprice Ltd 864Teletraders 878Televideo Services 873Teltech 876T.E.S. D. Ltd 865Tidman Mail Order Ltd. 866Tree, W., Trade TV 866Trundle, Eugene 865

UK Rental & Retail Ltd 892Urban, Joseph & Sons 893

View -Tel 874Viewvision 878Vincent, J., Technical Books 893Visions 829

West Midland N & Video 819Willow Vale Electronics 894Wiltsg rove Ltd 871Wizard Distr butors 884

Zoneport 876


Hill Intercom £8 CV 8617 100Y 716 10PY 729y 730

I'loPp

Y 827: 6A/1KV 20pY 860 30pY 933 5pY 969 5O0Y 997 3°11Min 12 volt Relays

75PR 1038 40pR 1039 40pR 2009 80pR 20106 £1R 2029 50PR 2210 6°11R 2257 60pR 2265 50p

R 2305 50pR 2306 30pR 2322/2323 pair 800R 2323 15PR B96R 2461 5°P

800R 2030 50pR 2443=BD124R 2540 3Ol!R 2737 4O0R 2738=TIP41 300R 2775=TIP41c 40pR 3129=TIP47R 4050 £11

200862SD898B

£12SC19427

Hitachi sets etc.STR454 £25TR6020 £2S 2000AF line o.p. £12SC940 11BU 105414 8°PBU 108 £1BU 124 500BU 126 °OPBU 180aBU 204 65P60pBU 205 75pBU 206 £1

BU 207 £1BU 208 801)BU 208A 75PBU 208D 90pBU 222 giBU 326 ilBU 407 60pBU 426A 45pBU 426VBU 5C0 £11BU 500D £1BU 508ABU 5138V 9WBU 705 £1BU 806A LiBU 8°7 £1BU 824 50p50p

BUT 11BUT13 600V -28A £1BUW 11 50pBUW 84 60P

0 -BYW 208-9 £1BYW 95 10pBUX39 25A -150V Ei

BUX84 50pBUX85 50pBUY49 200TIC 106a 3.111!TIC 116mTIC ll6n/Y 1003 3'07

TIC 126N 30pTIC 225S 30pTIC 226E 30pTIC 226m 30P

3°PTAG 226/6(81 30pTIC 236m

TICV 106D(1092 case 2A/400V) 10pTIP 29 25pTIP 30 25p

TIPPT

3300A 25PTIP 30C 250

TIP 31 25pTIP 32 25pTIP 33B 50pTIP 33C 70PTIP MA 5°PTIP MB 60pTIP 34C 70pTIP 35B 500TIP 35C 700TIP 35D 80PTIP 36

,50P,.._

TIP 36C '"PTIP 41 15 pTIP 418 70p4TIP 410

011TIP 42 10pTIP 42/BRC 6109 lOpTIP 48 40pTIP 49 30pTip 57

30P,.._TIP I 10 ''''''TIP 100 30pTIP 102 3OPTIP 115 500TIP 117 50pTIP 125 35pTIP 126 opTIP 127 40pTIP 130 30pTIP 131 6PTIP 136 3°P,TIP 140TIP 142 gpp-""

11P 640 5ppTIP 2955 35pTIP L761A-1000V/4Amp 75pT 6032 3011T 6030 40pT 6040 40pT 6047 40pT 6049 40pT 6051 40p

T 6052 40pT 6054 40p

T 6070V £1.00T 9004 4110T 9005 411P

T 9051V £1.00ZTX 107

101-1

ZTX 108c 1011

ZTX 109k SPZTX 213 'I)ZTX 341

101'ZTX 342 II1pZTX 384 ltipZTX 451 10pZTX 550 10pMJ 2253 60pMJE 3040 6opMJE 2209 10pSP 8385

5°PSAB 3205 £1.00SAB 4209 £1.00301)M + 7110 320V £1.80zoo + mo + 100 + 50 300V 50p150 + 200 + 250M 300V 50p

Computer Transformer20v/2.25A; 20v/1.5A;l7/.5A; 19/.5A; 28/.05A £3

Varta Batteries 2.4V100M /A SOp

NI.CD 5 Hours BatteryCharger with battery test £6

Regulated Power Supply3-12 volts 1 amp

in box with switch andPhilips small stereoheadphones £2.50

5°P Hill Deluxe Universal Ni-Rank UHF 4 pushbutton tuner £4

I.2V NC. 2.4V NC. eachCad Charger £6 Philips' Video Cleaning Cassette

4 amp -1.2V Nickel SBC461 faCadmium Battery DGRC power supply

PC743B £10Cell £1.00

Nickel. Cadmium BatteryCharger AA-C-D-PP9 £4.50

Philips' HeadphonesCompact Disc Stereo Type no

3.25V Battery SOp12V Video Battery Packs 12 Volt Aerial Changer over ITT Display Tube 58705 50pRank front panel

Z950 £5 4Amp U2 Cells £10 Relays 144 Mc/s 45 watts SOp 8 Seg Display FND500 20pGEC IF tuner panelPC786B £12.50

24V 4Amp (IOUVA)£4.00TransPocket6 Push Button Unit for GEC

2100 Series Replacement forModel 3000Personal D.M.M.

Rank IF 742 £3 Mains 240V (100VA) to240V fully

Touch Button Unit £8Volts range AC. DC 200MN to4110V. Res. 2000Kin f:20

D(.10 8 Button Unit£10

out shroudedBM 8 SEG LED Display with Export PYE731

6 Push ButtonITT CVC45 8 way resistor driver 1.C. LM1017 50p unit with (UHF -

VHF) band switch u6 Button UnitRediffusion Mark 3 £5

Rediffusion Mark 4 & 7Push Button unit £10

unit for v/cap £3

CVC40 8 button unit withPHILIPS'

MIN. HEAD PHONESITT Micro Phone MS SOp with

switchmains lead & slider potswith sockets £10.00

£1.50 112 Volt Sub MM Relays 25p

Book on An Introductionto Satellite TV

Electronic Buzzer6 volt, 12 volt 400

Philips Solar ScientificSBCI730 Calculator £12Tuner IF Cans ITT

CMR200 £10£5.95 No VAT 15v -0-15v 1 Amp

ITT SEL HE Modul 2UK IF Tuner £8

Book TV DX Handbook I5V, 015V, IA £1 Transformers It

by R. Bunny PrintPrint Type Trans10p

£5.95 No VAT I2v DC Relay I1/2x 11/D(2 RGP3IIG 8pRGP 10B Sptactiet; of frontS

types £5

Electronics HobbyistsHandbook £4.95 No VAT

print type 10 amp D.P.Changeover £1

RGPI5 10pRGPI5G lipT6024WG1 10p

OLD TYPE TEX. I.C.TX004F 0.50TX005GN £3.00TX904 LimX1418 £4.00MM2102AN £2 00

Multi Core £4.50GPIO 50GPISO 5pCVC2O, CVC32 I.F.

CVC40 Cans £5CMR800/3 NEW £20

60-40 Soldar 5(10G 21) SWG £51015 Watt Stereo Amp Sanyo Module with Data 31.,PHILIPS25 Watt Solder Iron £4.00.

THORN RGPAOG 30pDUBLE 7 SEG Displays ISpLNS 26RA or 10 for LI

CMR800/3 £20CMR803/2 £20 Various Tools and Accessories

Self adjusting cutter stripper £5.0010 mixed tube bars £4.00sax) Diodes -Resistors £3 packTN V/Aerial 30112 or 750 £1.50 D/P push mains switch 20p eachMains lead & two pin socket for radio cassette 35pTN loop aerial 75pRadio Telescopic Aerial £1.00Philips Neon Lamps for TV sets 5pFreeze Philips £1.20Foam Cleaner Philips £1.20Contact Cleaner Philips £1.20Cans of Anti Static, Degrease Cleaner and Anti Corona An at £1.40Lorlin Full Remote Relay Switch fit most TN sets, mains 4 tag. 2 tag 12 volt £1.00Mains timer. 13 amp - up to 2 hours: easy to use, plugs into socket £3.00Screen locking agent, large can £1.50Red E.H.T. LEAD and Anode Cap £1.00Weller solder iron 25 watt £4.00Hitachi Silver Oxide Battery G13 UCC357 IEC SR44 I.5V 60pRIO Coax Plugs £12.00De -solder pump + 2 nozzles Philips £4.00Flat Red LED and Green Sp500gm 60/40 solder reel £6Solder 1 kilo reel £5.543Dual v/u meter -20 - +10db £1K.30 thermistor 232266298009 75pDe -solder Pump £2.50Portasol Flameless Gas Soldering Iron £16.00Green & Red, LED pack mixed 100 for £1.00Hill Meter Leads, S/Rubber and Probes £4.00

Voltage Regulators+5V/UA78PO5SC 30p-8V/79M08c 30p+6V/78M06c 30p+10v/78LAIO 20pLM 3171f 30pLM 337 30p

LM 342/18 30p

LM 340T 5.0 50p+12V/LM 340T12

5°P.,...+18V/MC78MI8 ""'"+24V/78M24 30pMC 7724cp 4°PMC 7824 40P

T1S 90 10pTIS 92

2°PTIS 93

2011

U 19885 yop

U 3832 15p

U 3845 15pMR 508 .,

1,1fMR 501 '"1'MR 502

1101BCW 71R 300BYF 1202 100BYF 1204 10pBYF 3126 40pBYF 3214 40pBYX 10 I°PBYX 36/6110 35PBYX 38/3110 25pBYX49/6011R 75pBYX 55/350SoundlOpBYX 55/600 (Bead) 10p14YX 71/350 20pBYX 71/600 50PBYX 72/3(10 20PBYX 36/600 50pBYV 95B 101)BVY 95C 12pBYV 96D 10pBYZ 106 10pBPW 41 15pBYW 56 2A/1000v G11 SPBYW 29/5(1 15p

BYW 95C 100BZU 15/24 54pBZY 93c75 50pBZV 15/18 30pBZV 15/30 30pBZW 70c6v2 I°PBZX 79.3v 1101)

Bush thyristor RCA 76122 £1

Transformer 240vf20v-500Ma 75pChassis type Transformer240v/12 Volts 500m/a 75pCVC 20 tube base £2Tube Base Rank & GII £1.20

Infra red ledLD57CA15K-20 turn pots 20P1511

Thorn 3500 2A cut out 50P

20AX Line lin coil 50p

GEC switch modetrans 20AXITT mains CVC9 toCVC33 print type 60p

ITT 2,8(0 mainsremote switch 50p

NEW

2110 GEC Sound 0/PPanel £1

2110 GEC L.O.P.T.Panel £6

2110 GEC PowerPanel £5

G-i'AeCG/282`re panels

ITT CVC40 PushButton Unit & MainsSwitch £12

Tuner & IF Panel.Complete 6 button andpreset IF with s/waveFilter and tuner.Mullard M342 5"x61/1'

56.°0

POTS

BA 301 £1TA 4127 £1HD 3884 2A23 £3TA 4184 £1TA 2125 £1TA 4190 £1TA 4138 £1TATA 4196 11

11

TA 4139 £1TA 4198 £1TA 4167 £1TA 4199 £1BA 546 £1BA 328 £1TA 4176 £1TA 4145 £1TA 4191 £1HA 11710 £1TA 4188 £1TA 4197 £1TA 4183TA 4197

£1£1

TA 4183 £1TA 4195 £1TA 4175 £1TA 4177 £1TA 4192 £1TA 4146 £1TA 7265 £3'FA 7699P £3

HILLSMiniature Linesman Pliers £2.20 Miniature Pliers £2.20Miniature Side Cutters £2.20 Miniature End Cutters £2.20

KT3 PANELSOutput RGB Output Chroma

Panel, I.F. Panel and Line OSC17.00 each

100 Fuses £2.00I()0 W/W Res. £1.50BF 199 20 for £110 x 20 Turn 1110k pots. Rank £2

' BF 470PYE 6 Key Switch & PanelGII Front Panel £10

20 for £2

6 Mixed UHF Aerial Isolating Sockets.long leads. Fit ITT, GEC.

SONY 1400KV Chroma Panel £6some withPhilips. Pye £1.101

SONY 1400KV Touch button unit £3.50Mixed Packs

GEC Decoder Panel PC772A3PC446A5 £6

TO66 12 Power Trans RCA 16182 NPNReplacement for BD124 and MountingKits £1.00

12 Volt Mains Trans 500M/A £1.00 25 Panel Mount Bulbs & Neons £1.5010A £1.50

Double 1.5 Digital Display.High brightness 10p

2525 LED red/yellow/green £1.50Holders £1.20

20 Large LED Red £1.00

Quantity Reductions20 Small LED Red £1.0010x20 Turn 100K Pots £1.00

BY204/4 25 for £1.00BY206 25 for £1.00 Red & Green LED on Panel Ip each

KT3 touch button black 6 for 11G11 touch button red 6 for £1K30 full remote Dawer Ass with 3IC. £7.00K30 VHF. UHF ]Dawer Ass £6.00BY298 3 amp/fast:12 20 for £1.50BUI26 10 for £6.00BU205 10 for £8.00BUI05 10 for £6.0013E458 10 for £1.0013E224 20 for £1.400A90 40 for £1.0050 Ceramic Condensers £1.50Mixed Mounting Kit for PowerTransistors 50pAC Condensers £1.50

Mixed 100 Transistor B.F. and B.C. andPET £1.50 BOO for £10.00

12 Volt 4 Amp Video Battery Pack 10 ofType D Cells £8.50

40 glass reed switch £110 press to make switch 70P40 Pots £1.50With Focus Pin, 10 Tube Bases,mixed £2.001,000 Diodes, Condensers, Resistors onBandolier £1.0020mm Fuse HoldersChassis Mount 20 for LIEHT Diodes, small 20 for LI

The Service EngineersGuide to Teletex £2

4 Types Fedility frontpanels with i.c. & pats

£2 each

BB 103 1°14BB 1058`x12BB 105B x 12 t!BB 105G x12 ..BB 12Ia47

I0C10P ear

BRIDGESKBL (915 30pKBL 02 30pKBP 04 30pW02 15p

W004 15pW005 20p800V Bridges 21/..: Amp 30p

300 Resistors, .

£1.50150 Electrolytics £2.00

300 Mixed Diodes £21A/1600V I Op

DG3P ECIV-BY228 10for £1

bridge rec. wireend15PSKE4G2/ 02 15pE& BYX7I/600

15 Bulbs Philips 40pGEC -Hitachi Thick Film Frame £5

100 500M/A Fuse 11Mixed V/Cap Pots 1TT-GEC-Hitachi-Philips 20 for El

S C OMPONENTSTO ORDER SEE BACK PAGE

etc,ITT Mains Switch with RemoteCMC113 til

I2v DC relay 11/2x I1/2x2 print type 10amp D.P. change over £1

MAINSMICRO SWITCH

GEC & Double etc. £1


SENDZ COMPONENTSTO ORDER SEE BACK PAGE

!born TX9() Chassis with Line Linearity Width P.C.B. PC1183 £20.00

LA114411 £1

TAA7750HA 411485UPCI373M58657PM491BBIM50441/550M58658P

50p£1

50p£1£3£1fl

K35 Decoder £.8.00K35 Sound OP £4.00Thick Film Daughter KT3 3122-12743891

iJ

12 C.H. K30 Tex Rec Front Panel withI.C.K35 IF 0.00

Plug InK4 Focus Pot £1.00

Receiver TX11X) PanelLC. No. SAB3035-MAB8440P D066-SAA10611-PCF857 I P

Fidelity Tube Base wnh transowr & focuspot £1 50

New Model Philips Meter £25.00

Bush Tube Base on panel LI 00

C. Cam Decoder with TDA359I £5Toshiba VHF/UHF' EG522F £6

TX10 Tube B. - on Panel £3.00

Mitsumi MECI-F5 I £5

Thorn SparesNew 9000 Decoder £8.509000 Frame panel £89000 Cyclops panel £1.508801 convergence pand £68500 convergence panel £64000 Power supply £3I3X1 Mains lead, switchT605 IvNPN 110,6 811v 6A lOp900 Sound output panel II3500 Focus unit £1.503510) Mains Trans £43501 cut outs 10 for £43500 IF panel £23500 Frame panel £33500 Al Diode 20p40N) Tube base £43500 AI pots 50pBeam limiter panel £1.5035110 Power panel with Y969 £1

3 Way regulated adaptor 240V 6V/7.5/9V/300mA £3.50Rank/Toshiba preh unit 0354 £9.504 Push button unit preb £1.006 Push hutton VHF/UHF forv/cap. GEC-Decca type £7.007 Push hutton for CVCS ITT 18.00KT3 12 Push button unit £2.00KT3 (Export) 12 P.B.0 £26 Push button Unit Thorn £1.006 Push hutton GRC £6.006 Push hutton PYE 731 £6.00Hearing aid unit £3.00Rank Z7I8 4 P/B/Unit MECH £4.007 Button Unit GEC with Lamps £7.00697 Push Button Unit £6.00Z9I6B panel £5.00T5 I 3AP panel £5.00

Line Transformers08 Lop) £5.0009 Lopt £4.006 Diode "Triplet. Mohan/ 75pLine O.P. Trans. Mono T.X. 12"-14"Philips G827482 £104822 110

10273 110Thorn 1690 Lorr £7.5021/Pots 3,5101 I off each type £1.00G8 Trans. Philips £7.00011 Split Diode £12.00C'VC820 Split Diode ITT £10.00Thorn B/W AD5308F + Stik +Lead £1.50GEC 2040 0.00GEC 2110 £7.00Mullard AT 2036 £1.50

Pc 169 Line Trans £3.00ye mono 0.00

Rank mono T7114A 0.51)Split Diode Trans £7.00GEC 20 AX Rank 2522 £3.00Rank L.O.P.T. Z970 0.00('V01101 Line Trans £6.00CV0125 Split Diode 110.00CV(' 45 £5.00GEC Portable GIOT2041GEC Portable Gl()T2046 £3.00EE1T Split Diode Leads ITT £1.003500 L.O.P.T. & HT Trans each £2.00LOPT Rank 'Z763 £5.00K35 Split Diode 3122/13835930 £10.00

54471 £1.002SD1878I INA8443/C3I DA3506SAA524I P/ASAA7020 /01IlD614080SA90

£1.00£1.00£1.00£5.00£3.00£4.00

225m + .25m 3813 £1.00220m 385v £1.00240m 4110v £1.00GI 1 470m 2511v £2.0041X/m 41X3 £1.00175m/1110m/1110m 3513 £1.00TX9 5110m + 5110m 175v £1.00

(7 Hand Set £6.00

Gs LOPT Panel £7.00(0) Tuner Unit + Panel £4.00Cti IF & Chroma £6.00Cdi Chroma £3.00

G I 1 ('hroma Panel £4.00GII LOPT Panel £6.00(ill IF Panel £5.00

GI 1 IF Detector £3.00(ill Selector gain module £3Pye GI I Front panel with transducer.pots, tuner pots. 6 ph switch+lead £5.00Pyc 6 button switch portable £1.00GEC V/cap VHF/UHF tuner and IF+sound 0/P PC 7)6B3 (Export) £12.00GEC Line 0/P PC 65963 £6.002110 GEC Power Panel £8.00CVC 20 Front panel with sliders +mains input panel £4

Universal Triplerwith small focus pot. Green type £7.00

Video TimerV.6110)/05 T/V and Tel/Text unit andhand set £90.00Send for data.

1714 GEC TEX-DECODER13 IC Panel with cable form £9.50

PHILIPSK40 Text Panel £8.00CP90 Chassis 14". 17 -and 21" NEW£20.00

OF -425OF -550OF -513OF -557

KT3-K30

E.W.COrteCI1011

10p10p50p

DIODESBY 126BY 127BY 133BY 134BY 176BY 179BY 184BY 187BY 190BY 196BY 198BY 204/4BY 206 - BY 407 Eqs.BY 208/800BY 210/400BY 210/8101BY 223BY 224/60: 4.8A/3IN bridgeBY 226BY 227BY 228 1500vFlat BY229 blackBY 299 RedBY 229/400BY 299/60p TagBY 237BY 254BY 255BY 298BY 299BY 406BY 527BY 407aBY 448BY 527BY 602BYV 26CF 247GP211GGRP80G (TX III)XK 31112BYV 28/200Bridge TX11) 800/3 ampsKBPC35412 BridgeBridge Rec. D35B Ill

10p10p10p10p25p40p25p10p40p30p10p

8p8p5p

10p60p50p15p15p20p15p20p30p30p

5p10p30p10p10p8p

20p10p10p10p10p10p10p5p

30p50p20p30p

£1.5040p

Black TripletsKT3 TriplersS.T.C. Universal TripletI I 17T11 TGAITT ('VU 5-8-9Rank T25LE Triplet -Rank I ITCP A823TU 25 30K Rank11 TEZ RankG9 PhilipsGEC 21103500 ThornMOO Thorn90N) Thorn9500 Thorn9600 Thorn21)411 GECGEC TVM25 TriplerUniversal Tripler08 Triplet.CVC20-32Decca 0) 100Grundig TVK 52I ITBO Pye 731I THY

1)22 for Pp: III" colour portableLP 1193/6300 100/41

£6.00LAM)£2.50£2.00£3.50£2.00

0.000.00£4.00£4.00£3.00£1.0017.0014 50SAM)£3.50£200L5.00£5.0015.00£4.50£2.5013 (10£4.0014.0014.0013 25

ERO Tripler print type with foacs P(>7802087Ties, ultrasonic rec'r pane' 114.00I2 -14V. 20 for £5.00 200 for £25 00GEC 8 touch unit assy complete with allI.C.'s + riots £4.000)) E. W. 'Transformer 50p01 I E. W. coils £1.000)) Transient Suppressors 245V 20p(ill Scan Cods £5.00GI I INK tuner pots 12 for LIKT3 IF panel £601KT3 line ()S(' transformer ElKT3/K30 infra -red receiverhead LI

K3)) drawer unit with IC's(home) £10K311 drawer unit with IC's(export) £10KT3 AE Sockets 50pKT3 receiver panel esK13 line driver transformer 50pPye. K311. GEC. etc Pre -mains stand-hyswitch flDecca MIN) IF panelNPN PNP 811V 6 Amp 1056 O.P.Trans. puir 25p.5 button touch tuner BBC1/2 ITV I/2video with is SAS 560T/5711T £7.00Control panel 5 sliders + mains lead£1.50Ci I I 8 touch button unit replaces old 6P.R.11. £24Tulle base + base unit for 8211 Eurochassis £4.00GEC Line 0/P Trans. & Rec. Stick forPortable £3.00CVC 20/25/30/3540 decoder panel £10CVC 20(25/3/3.5/40 decoder panel( Ws* .d)

1550p

£1.2030p

LIMO

CV(' 40./45 IF panel40K TransducerPHILIPS NE51 INLM337M Reg.20 GEC Black Spark GapsKT3 Front Panel ControlAsvy.13TW 3)150

£2.5051111

CVC 41) PUSH BUTTON ASSY withsliders, complete with lamp assy + pots8 hutton units £9.00Universal Focus. Fits Pyc. Thorn andDeceit Units.TI47 Rank tube base on panel £1.0027I8 Focus Unit £1.501211 Focus Unit £1.00Large Type 75pDecca Small 75pKT3 Focus Unit 75pK311 Focus Pot 75pK30 Tube base on panel £1.00TX111 Focus Units £8.50CVC 32 Focus Unit 75pFidelity Focus Unit 14R -)4S 30p351X1 Thorn Focus Unit £1.00ITT Small for use with Split2718 Bush Focus £2.00Diode 50pRemo TV I 2SP 50p16110 Thorn EIJI' Rec and Lead 5.41p

TV14 50p1'V211 £1.00TV45 50p

TX9 8 Button Unit £6.00

TX90 8 Button Unit £6.00

TX90-TX925 8 Button

'DON) 8 Button Unit £6.00

TX 10 8 Butt. Unit £10.00

TX 10/TX 100 16 Button £10.00UHF -VHF BAND S.W.

GI 1 drawer ASS 3 pots Mains switchand lead £2.00

K311 Drawer Ass with pots cableforme £1.00

TXIO Drawer with 8 way pots. ass. £2.50

1'X10 Ex. port with hand switch(drawer) £2.50

Hills Meter for the car man. volts, amp.ohm with dwell and r.p.m. L35.00

Hills 9 piece tool kit in case £5.00

Abbey Security Smoke Alarm Model£5.00101

Philips Coaxial ('able Stripper SBC325£7.50

42))M 400V LIAO470M 381)V £1110220/400V £1.001200PF 15KV 10p.1)1 2KV 10p1511m -385v 50p110111m -INN TV11) £1.001+1 MFD Mains Filter ITT 3 Pin 15p1/100 x 11) 30p22/11X1 110P

4.7M/110168110p1-11101v 5p470/1110 20p4700/100 75p47/IN/ 10p

3101311/310)V in 1.6KV 80p8101/131 50p.1/251) Pulse 5p2.2 2513 10p

7N5 1500V I5p3n3/251) A.C. 00p

.33/250V 20p

.39/250V :15p

4n7/25)) tested 5KV 15p22/250 15p47/250 101)

100/250 20p

GEC6111W250 1.0p

700/250 £1

2.2101PF-2Ky 10p

3101+310) MFD 3503 £100800/250 .10p

32/300 20p4/350 Sp

8/350 8p

4.7M/350v 10p

33/3511 20p220/3511 30p

300/350 .40p

400./350 50p22/375 15p

220/385 (ITT) 75p330/385 ('VC 820HT 60p0.1/4101 15p

KT3 E/W .39/4110 15p

.56K/41111v 20p4710/pf/4101 10p.22/4110 10p8/400 15p

33/400 20p400/400 40p394K/4110V 20p1000m-133 £0.00220/4511 40p.47/5(01 25p0.1/600 15p

0.1/1200V wire end 20p0.1/450 A/C' wire end 20p

.22/11100 20p1147/3X) I5p

0.047/1000 10p

0.111/1000 111p

11.11/16103

150m/185v £1.00.47/10003 65p.47/250V A.C. 10p

.0)I K/125(1 10p

11.0047/15110 10p005/1500 10p.01115/1500 10p

In8/1500 15p

2n2/1500 15p

01/160 15p

GI I.8200/2KV 15p

11.1/2KV 20p

3n9/2KV 15p0.0015/2KV 10p6n2/2K V I5p2n2/2K V 15p4700 4KV 10p

75101p172K V 111p

3000P1 -731100V 1040

4n7/2KV 15p6n2/2KV 10p

7n1/15110V 10p

802/15110V 10p

On I/2000V 10p8n2/2KV 15p00082/25101 15p

150/35110 10pI800/4KV 5p4.7n175KV 10p

I 70/8KV 10p

1811/8KV 10p

210/8KV 10p1000/10KV 10p47/1101V 80pTube Thermpath 167 £1.00Rank Steam Decoder Panel UHF &VIIF'TI ISA £13.00114off .91 CAP G11 £2.00Philips K4 CAP 1511M/385V 50pPhilips Coaxial Cable StripperSBC32S

Philips I landset ICSAA3010PMA118461/W1)63

f-1.00£3£3

MAB 842111.-0/31MAR /14111113-6MAB 8440P -1A/711MAB 8440P-13033MAB 84441P-0056MAR 8441P -T11411

£3.00£3.00£3.00£3.0013.00£3.00

M58484P E2.00

Hand SetsFidelity

£15.00 to £35.00

ITT 8 and 6 Push ButtonPye 725 TOPTsPye 731 LOFT.Thorn 850049100 L.OPTs

£1.00£6.00£6.00£5.00

CMC 301 front panel £5.401CMC' 303 front panel £5.00

('MC' 1112 Panel wnh mains switchetc £5.00

(WI) 800 Decoder £8.00

ellReceiver Panel

£1.50

3 LC.Power Supply (ill Full RemoteReceiver Panel £3.00

P/ BLIPS SBC 469 Stereo Microphone£23.00

Meters IIilLs 521) £17.00Meters Ililis 420 £10.00Hills 1105000 Digital Meter 1000V IX751/AC 111 Amp 20 MR(i Rangers £28

11T1011Multimeter £6.75ilT3011 Multimeter £7.75FIT5011Multimeter £9.00I rnoo E15.00111)10011 Digital £20.00FID3000 Digital £25.0011050410 Digital £25.001105500 £29.00110601111 Digital £32.00IlD801111 Digital £37.0011095110 Digital with capacity TempTrans Volts Ohms and Amps ranges £60

Infra RedHansel Tester

Works 0 24 feet - Sound repeateWorks off 9 volt batteryFits in top pocket.

8.011

Handset Tester wnh LED 54.50

Repaired HandsetsPhilips K4 -K35 R( 6350-RC51011RC5370, RC5375. repaired same

£10.00R('411411 Full Remote KT3 K31, Teletext

landsets exchanged 115.00

NEW Type RE '441111 9(11 not 12 £6.00

GI:(' Full Remote Intro -red, 1983 models£15.00

TOSHIBA HAND SETS(T9185crY176(-I-9133

£7.00£7.00£7.00

Rediffusion M K3 £5.00

TOSHIBAIIAND SETS

24 Button (1'938 Fuliremote £5.0032 Button (T983 Videotext £6.00

THORNV( It Front Display Panel £7.00

Large type ITT '1V and V ( RI lands, E15.00

iFC' Ultrasonic NCI! Full Remote £10.00

Gil Full Remote Ultrasonic £32.00(ill Ultrasonic Teletext t lands. £20.0014 CAI. Ultrasonic GEC Full RemoteC20141 1/C221911 £15.00New Replacement for (ill UhrasonicFull Remote E12.00Thorn 4000 insert with 7 buttons £5.00Deceit RC 11 £14.00Deceit RC 12 £14.00Ci 1 I Infra -red full teletext £20.01Dynatron-Full remote (TV 62. 63,4,1

£19.00Ilitachi infra red handset £18.00

full remote KT3. 16C928/21K-934;72214/7324; K12 26E' 797/ 1ST 668.1826 £12.00GI I. Full remote top button assy. £12.00(ill. Full remote repair service (exchangeunit) £18.00CiFC infra red full remote 8 dhannel(1.C.SAA12511) £14.00Philips infra red lull remote 9 channel for611CP2605 £6.00Philips infra red full remote 12 channelfor 60 C'P26115 £12.00K35KT3/K341T/Texl £12.50KT3/K311 Full remote £15.00K13 Power supply £4.00GEC infra -red 2236-21126 £4.00GEC' 8 button fun remote 114.00OF(' push pail handset button blobs 10peachPye & Philips handset KT3-K30 chassis.No RC51511-12C5176-RC517148E-5177.Special Price £13.00RC400I KT3 and Teletex £14.00IT CV(' 32 handset repaired £15.00CV(' 32 'land Set £15.00CVC 45 3 and 2 PinTX In Hand Set Text 112.501'X9 with Text £12.50TX9 & TX111button print £2.00TX111 Focus Pius £5.50

International Rectifer ElIT Diodes G 7011IV 34 6KV6A/6110V Stud Diotks 20p BTW 92/801)R6A/11100V Stud Diodes 20p 25A473 PNP C/P

3 for 8p£3

10p

CVC 20-25-30 Mains SwitchesInfra Red and Ultrasonic G I 1 Teletext De oller PanelRANK & ITT Mains Remote On -Off Swit h (720R)RANK & ITT Remote Switch 2800 ohmGI 1 Mains Switch4 amp Mains SwitchGEC Mains Switch 4 ampKT3 MainswitchG8 Mains SwitchGII Preh Red LED P/Button for Cll. ChangeRANK TOSHIBA Transductors TPC.201 IMains Switch ITT Long Type PrintMains Switch Philip Long Type TAGMains Switch GEC Long Type TAG2000 Chassis Fidelity Mains Switch (4 TAG)250V/4A White Lorlin Mains SwitchKT3.K30-K35 Full Remote Mains Switch (6 TAG)Teletext Adaptor Kit TY-500 PanaumicPhilips Battery Tester All Types and charger visPhilips K4 Mains Switch with standby

6LI£1.50£1.50

50p25p

£1.275p20p50p75p75p75p60p60p

LI£12£6

80p

ITTTzV & Video Processor. 121111Type £10.00

PHILIPSUNIVERSAL HAND SIT £12.00 RU5

KT3 - K45

We have all pa., for Philips Handsets

R( S353RC5300Philips RCS

£15.00£12.011£15.00

TEXT -TYPEReplace Hand Set for

l'hilips KT3-K311. K4 etc. £12.30

THORN HANI) SETS'lilt-'till-TX9 I X10'1X 11/0lest and Non- Text £10.00

PHILIPSRU5171 £12.00

8.35-8.4 HAND SETRepaired for £5.00


Tuner /InnsI 6911-1 X100 rune, £5.110

Blinn TX tuner V'( NS to I I C1541£4.50

Min 1 / 1 II !Liner 415113 gam12"xl." f1.50

S 111 -1111) 5)116 D:IIa -loner ML( I.

I4(41 Fanols with Data MostisThom 7X15 Export X ( ap UHF, 411113\ ('up Rank UHF 17761:1111n £6\ (up Rank VHF 17731 Una £5NEW (PI Tuner ('up 13.5012(1 6 Posh Button UnitLI C20011 on Panel £2.50UL(' 2110 V ( ap 1.5

1E6180 £20.00I 1 ( 1042 NEV. £6.10)ETC1043 (Ex Panel/ £3.75

L.C'0011 NEW £4.00NEW £8.00

£4.001.1 C2004EIC7110111(12)06 NEN% £4.00

"FC 1 finer A (1; """drtAlter197/0 L1548. 1154 . 1-1418 £8.011L 1546 £6.00LT614 11111- loner1.15661' 11111 Very Small £2.501 r548P VIII- 11111. Van Small £5.00U)))-1 1 5661' small £.6.003S1 LC 11M1181 £10.00V414 15 111.1 £5.000321 £6.0110322 £8.0011341 11111 £6.10)0342 (CHIP £5.0015141 Phono £5.0001411 £6.00I 4414C 010.001'411 1 III £7.14)1 X I 16 £8.001-\'411 loner 110.001' 5 412 f..8.1101 3 415 £7.00( V 417 £7.00I -X' 418 £111.001 5 617 £10.00I-\ 618 £12.00I 43 Muter £7.001 61,4 s .inil A rnstod 7000 V/CapIt,,, £5.14)',toll \.I .,r N111,11111I I II . £4.00\ III .. £3.00\ 1 11 & 11111- 171598P1 Ull, £6.001','r tahle & ratan -boners Sanyo &' 611ounnI III £5.00S,1- 1 HI 3111 Van, ap fold type) E8.110Is Iostit 1 111- X III ;new Ispc) £8.00I3 _-031 Fidelity V'Cap T Una £6I I 11 VHF V/Cdps on panel £3.00

Pot1111A( III 20 ToI171 on panel farn

tuner unit VHS Ss Ix ania (i1 0 VideosM16 900 £2.50l'oshala VIII. -1111. 1(15221 £5.00Mallard Video Modulator. Application.sale,/ tape recorders. TV cameos. valek,games. closed circuit 1 'V. C C 1.54.ss stein Data supplied £10.004 button Rank Z18 'Inner £4.00

SENDZ COMPONENTS63 Bishopsteignton,

Shoeburyness, ESSEX SS3 8AFSAME DAY SERVICE

All items subject to availability. Technical Information bytelephone only. No Accounts : No Credit Cards

Postal Order/Cheque with orderAdd 15% VAT, then El Postage

Add Postage for overseasCallers: To shop at 212 London Rd.,

Southend. Tel. 0702 332992. Fax 0702 338805Open 9-1/2.30-6. GVMT +school orders accepted on official

headings add 10% handling charge.

UHF Tuner GTR SylvaniaF4714A £2

VI IF Tuner GTR SylvaniaF372(13 £2

Sylvania UHF- 1472013 £6.00

Sylvania VI IF 9110 £6.00

Small Tuner DX I75-22051111.

Auto Changeover £5.00

91114) Thorn Tuner on Panel £7.00

Change over switch co -ax type boxwith lead .511p

Delay Lines£1.00IN.700

KT 3 Luminence 75pLuminance Delay Line (CVC 45)Co -Ax Joint 15pCo -Ax Belling Lee PlugCo -Ax Splitter £1.001Ul IF Modulator CCIR £3.00UHF Modulator Astec 1280 £2.50Infra Red Emitting Diode 20,NE2861-I Small Neon Lamps GE(& Philips SpMullin,' 5 Watt Amps. LP I1(12_New 75p

T.V. Tubes12" 909% black and white £1012'7101'31/510 Post (2.50 £5

S.W. Filters S.W. FiltersIIW2013 50p SWISS ilSW453 50p SW I53A 50pSWISH £1 SW154 50pHW2013 50p SW173 SlipRW303 50p F103513 50pSY2153 50p F1045A 50p

0E694 10p1116758 30p1107611 341p

111-'134 15p131-'143 10p131/1184 8pBEW 1 1 20p131:X29 .11/p11FX/14 25pBEY50 15p1316Y52 20pBEY% 25p131. Y49 25pBPW4 1 25pBRC I 16 25pBRX43 I5pBRX48X 10pBR Y56 316,135568 10pBSY79 10p135Y95a 10p144610 20p13SX I4 17pBSX211 17p111055 30p131.82 30pTCE521/ 30p2N930 5p71,12721 lip2N2222 8p21,17906 10p:N11155 40p'N ;:IN, 10pN 1 '92 10p

'Nx711 10p7N 1583 50p2N1914 15p2N4355 Hip2N4442 £1.007614444 £1.002N5278 20p2N5296 40p2N5983 30p2N6099 lop2N6109 40p7.616110 50p_2X6133 20p2N6348 20p2N6399 10p2X 2N61/99 onheat sink 50p25/5437 20p2SA673P 10p26 A84-11' 10p2SC643A £1.002SA3/97 10p258407 Sanyo 103 10p2513474 ' 30p7513566 10p2SB6,86 75p25C515A £1.0025(1772 20p2S(381 10p750458 50p25C491 50p7SC'732 1111

750733 lop25(19411 £1.0025(11030 £1.0025E1561 30p2501162 (718 30p25(11514 30p2SCI5211 25p21401546 2025(71617 £1.002S01725 20p250 17411 20p25(11756

502S('1942 (1.04)2507027 £1.002502068 20p25021173 8p

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15p211p

316,301,15p

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30p30p

£1 .0075p

£1.0030p

£1.00£1.00£1.011£1.00£1.00£2.00£1.00

10p10plop5p

10plop10plop211p

20p10p10p10p30p25p25p10p10p10p10p10p111p

10p10p25p5p5p5p5p5p5p5p5p5p5p5p5p5p5p5p5p

1156P)

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