LG 2006 LCD TV One-Point Repair Tips Good

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LCD TV One Point Data

Contents

2006.01.05

- Model Classification

- History by Model

Display Global CS Group

LGE Confidential


Contents

Defect Condition Model Applied ShortcutSerial Number

DD-LCD TV05-1201 Picture NOISE LB563B-EA

DD-LCD TV05-1202 No FAN Operation L2320AL.ALKRT(L2320T/A)

DD-LCD TV05-1203 White Adjustment L2320AL.ALKRT(L2320T/A)

DD-LCD TV05-1204 Caution: 19″Main PCB Mix L1910

DD-LCD TV05-1204 Assembly Compatibility with Fujitsu Module L1910PM.AFEUQ

DD-LCD TV05-1204 LB782F-UD Picture NOISE LB782F-UD

DD-LCD TV05-1204 White Screen All LCD Module Models

DD-LCD TV05-1204 V-Roll (Broken image) All LCD Module Models

DD-LCD TV05-1204 V-Line Defect All LCD Module Models

DD-LCD TV05-1204 MODULE Picture NOISE All LCD Module Models

DD-LCD TV05-1204 MAIN NO POWER LCD Models

DD-LCD TV05-1204 V-Tab Line Defect All LCD Module Models

DD-LCD TV05-1204 LIPS Picture Shaking All Models LIPS Applied

DD-LCD TV05-1204 MODULE Rainbow All Module Models

DD-LCD TV05-1204 Cell Gap Mura All LCD Module Models

DD-LCD TV05-1204 H-Line Defect All LCD Module Models

DD-LCD TV05-1204 MODULE Diffuser Stain All LCD Module Models

DD-LCD TV05-1204 MAIN NO RASTER LCD Models

DD-LCD TV05-1204 No crystal in MODULE All LCD Module Models

DD-LCD TV05-1204Dark Picture on Top & Bottom(Picture appears & Disappears) All LCD Module Models

DD-LCD TV05-1204 Transient phenomenon in MODULEAll LCD Module Models

DD-LCD TV05-1204 Transient Phenomenon in MODULEAll Module Models

DD-LCD TV05-1204 MAIN Picture Flickering LCD Models

DD-LCD TV05-1204 LIPS NO POWER All Models LIPS Applied

DD-LCD MNT05-1220 LIPS Power Flickering All Models LIPS Applied

DD-LCD MNT05-1221 Color Blur/Image Noise All LCD Models

DD-LCD MNT05-1222 No Picture when Booting 19형 N-Chassis

DD-LCD MNT05-1231 No SOUND L2320AL.ALKRT(L2320T/A)


Contents

Defect Condition Model Applied ShortcutSerial Number

DD-LCD MNT05-620 Picture NOISE LB563B-EA

DD-LCD MNT05-818 L2320AL.ALKRT(L2320T/A)


DD-LCD MNT05-0915 L1910

DD-LCD MNT05-0915 L1910PM.AFEUQ

DD-LCD MNT05-1201 LB782F-UD

DD-LCD MNT05-1202 All LCD Module Models




DD-LCD MNT05-1206 LCD Models


DD-LCD MNT05-1208 All Models LIPS Applied

DD-LCD MNT05-1209 All Module Models








DD-LCD MNT05-1217 All Module Models




DD-LCD MNT05-1221 All LCD Models

DD-LCD MNT05-1222 19형 N-Chassis


No FAN Operation

White Adjustment

Caution: 19″Main PCB Mix

Assembly Compatibility with Fujitsu Module

LB782F-UD Picture NOISE

White Screen

V-Roll (Broken image)

V-Line Defect

MODULE Picture NOISE

MAIN NO POWER

V-Tab Line Defect

LIPS Picture Shaking

MODULE Rainbow

Cell Gap Mura

H-Line Defect

MODULE Diffuser Stain

MAIN NO RASTER

No crystal in MODULE

Dark Picture on Top & Bottom(Picture appears & Disappears)

Transient phenomenon in MODULE

Transient Phenomenon in MODULE

MAIN Picture Flickering

LIPS NO POWER

LIPS Power Flickering

Color Blur/Image Noise

No Picture when Booting

No SOUND


32LP1D(K) SVC One-Point

DD-LCD TV05-1201

1.Subject :

2.Model :

3.Defect Condition :

4.Cause

Prepared by :Display Division GCS Group CS2 Call 080-647-7777

5.Service

32LP1D(K)

Unable to mount on the wall

(Standing is OK)

1.Troubleshooting

→ Replace Rear Metal (4951TKK238G)

2.Trouble Range

→ 507KG ~ 508KG

3. Others

→ 503KG ~ 504KG : 4951TKK238A

→ 505KG ~ : 4951TKK238G

32LP1D(K)

1.Details

ⓐ The right tab of rear metal is too

small to be screwed

2.Defect Cause

ⓐ Working error by supplier

Unable to mount on the wall



1.Subject :

2.Model :


4.Cause


5.Service

Unable to receive Analog TV

1. Unable to receive Analog TV

2. DTV reception is normal

1.Troubleshooting

→ Replace TU401 (6700NF0019B)

→ Replace Analog Board (3313TD3027A)

32LP1D(K)

1. Unable to set up analog channels for

automatic channel setup

2. Only DTV channel setup is possible for


3. Be able to set up channels by replacing

TU401 tuner

DD-LCD TV05-1202


RM-30 32LZ50 Glitter NOISE SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

RM-30 32LZ50 Screen Glitter NOISE

Irregular glittering lights on screen

Remove C857 220㎌/16V and replace with 470㎌/16V Capacitor as shown in the picture

PART-NO: 0CE477CF618※ Capacitor polarity check required

RM-30LZ50/32LZ50

Defect Cause: Fine characteristics of C857 Capacitor capacity Glitter noise disappeared by removing 220㎌/16V and changing470㎌/16V Capacitor

Part Spec: 470UF SHL,SD 16V 20% (P/No.: 0CE477CF618)

DD-LCD TV05-1203


RM-30LZ50/DN-30LZ30(A) SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

RM-30LZ50/DN-30LZ30(A) No Picture with sound

INVERTER VER6.0 :Delete Q8 & Q9 on Inverter PCB (6632L-0048C)

※ MODULE R/NO: 6304FLP122A

RM-30LZ50/DN-30LZ30(A)

DD-LCD TV05-1204

1.Details

①Inverter off

②Channel up/Down: Normal

③Sound: OK

④OSD & Video off

⑤Input change: Normal

2. Cancellation condition : DC Off / on &

AC Off / on

3. Applied P/No : Application Status by Inverter Version

① RM-30LZ50 : ~411KG(6.0V)

② DN-30LZ30 : 405KG~411KG(6.0V)

③ DN-30LZ30A : ~411KG(6.0V)

No Video

(No picture with sound)

→ Occurs when DC is On

(Occurs as turning on with remote control after

being left for hours)


RM-30 32LZ50 Picture NOISE SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

RM-30 32LZ50 Picture NOISE

Noise at vertical lines as JITTER NOISE

Add capacitors at both ends of IC505

PART-NO: 0CE476CF638

※ Capacitor polarity should be checked

RM-30LZ50/32LZ50

Defect Cause: IC505 5V LINE Ripple NOISE Remove the noise by using 47㎌/16V Capacitor

Part Spec: 47UF 16V 20% 85STD (P/No.: 0CE476CF638)

DD-LCD TV05-1205


RM-23LZ50 Auto Volume Up SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

RM-23LZ50 Auto Volume Up

RM-23LZ50 Auto Volume Up

- Volume suddenly goes up when power is on

Remove wafer and solder Connector Lead

PART-NO: 6871TST630A※ Lead should remain as it is

RM-23LZ50

Defect Cause: Crack on P1700 soldering by P1700 area bending in wafer because Control board was touched while B/C assembly

Part Spec: 47UF 16V 20% 85STD (P/No.: 0CE476CF638)

DD-LCD TV05-1206

Can be replaced with 6871TST630A


37LP1D SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

Unable to receive analog TV

1.Unable to receive analog TV

2.DTV reception is normal

1.Troubleshooting]


→ Replace Analog Board (3313TD3037A)

37LP1D

1. Unable to set up Analog channel for


2. Be able to set up only DTV channels

for automatic channel setup

3. By replacing TU401 tuner, channel

setup is normal

DD-LCD TV05-1207


RM-17LZ50 SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

No Sound

Video output is normal but No Sound

1.Troubleshooting

1-1. Replace C107 (2.2UF) → 0CK225DFK4A

1-2. Replace MAIN PCB → 3313TN1030A

RM-17LZ50

1.Details

1-1. No sound for all channels

2.Cause

Crack occurred inside a chip

C107(2.2UF) Defect

DD-LCD TV05-1208


RM-13LA90 SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

POWER KNOB Defect

POWER KNOB pushed inward

1.Troubleshooting

1-1. Replace Power Knob only

→ Part-no:4940TKP137B

2. Trouble Range

→ Trouble Range: ~ 511KG

RM-13LA90

1.Details

1-1.Power Knob is pushed inward

causing trouble to operate

DD-LCD TV05-1209



1.Subject :

2.Model :


4.Cause


5.Service

NO Video(Latch up)

1.Troubleshooting

→ Replace Digital Board (3313TD4010A)

2.Trouble Range

→ 506KG~

42LP1D(K)

Details

①Inverter On

②OSD & Video off

③Index window (Front display panel) OFF

Defect Cause

ⓐ Flsh ROMDefect(IC101,102)

ⓑ HD2 IC Defect (IC100)

ⓒ CPU Defect

DD-LCD TV05-1210



1.Subject :

2.Model :


4.Cause


5.Service

Power Flickering

LED flickering with relay sound

1.Troubleshooting

→ Replace POWER Board (6871TPT296A) (55LP10D)

Substitutive Part-no 6871TPT320D

→ Replace POWER Board (6871TPT320D) (55LP1D)

2. Trouble Range

① 55LP10D :409KG ~ 509KG

① 55LP1D :510KG

55LP10D / 55LP1D

1.Details

ⓐ Power flickering

→ Q110 SHORT

DD-LCD TV05-1211



1.Subject :

2.Model :


4.Cause


5.Service

Rear Cover Off

Rear Cover falls apart as standing on Tilt Swivel

55LP10D

DD-LCD TV05-1212

1.Details

Ⓐ Rear cover falls apart in standing condition

Ⓑ Cause → Deformation of Back Cover

1.Troubleshooting

→ Replace Back Cover (3809TKE023A)

→ Replace Rear Cover (3550TKK630A)

Caution: B/C & R/C should be replaced at the same time to assemble

2.Trouble Range

→ 409KG ~ 504KG


DN-37LZ30 SVC One-Point

1.Subject :

2.Model Applied :


4.Cause


5.Service

DN37LZ30_Black & White Picture

Analog TV, AV: Picture displays in black and whiteDTV, D-SUB, DVI: Picture displays in normal color

RF (Analog TV), AV Signal have no color (Black & white display)

Replace X301(SC20.25A501) Characteristic Defect

Defect Cause: X301(SC20.25A501) Part characteristics defect

Part Spec: SCO-103 SUNNY 74.25MHZ +/- 50 (P/No.: 6204B47985H)

Defect Picture Normal Picture

DD-LCD TV05-1213

DN-37LZ30


LCD TV Option Key One-Point

1.Subject :

2.Model :


4.Cause


5.Service

LCD TV Option Key Setup

After replacing main PCB for service, all function letters are in English

- Default is in English, Key setup is required

Press IN-START key on ADJUST REMOCON, and the above picture appears

Refer to the attachment for setup Setup

ADJUST REMOCONPART-NO:105-201MIn principle, refer to the attachments for setup

LCD TV MODEL

TV Option

DD-LCD TV05-1214

After replacing main PCB for service, all function letters are in English

- Default is in English, Key setup is required


RM-32LZ50 Picture NOISE SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

RM-32LZ50 No Picture with Sound

INVERTER :Remove R60 on Inverter PCB


RM-32LZ50

1.Details

①Inverter off


③Sound OK

④OSD & Video off

⑤Input change: Normal

2. Cancellation condition :

DC Off / on & AC Off / on

3. Applied P/No : 411KG~502KG

DD-LCD TV05-1215

No Video






DN-37 42LZ30(A) SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

DTV SOUND LOW

Low Sound for DTV

→ Up Data using Tera Term program

① Boot Code change & S/W Up Data

ⓐ Boot Code change

Boot_LCD_UNI(37”/42”)

ⓑS/W UP Data

DN-42/37LZ30A Boot Up Data

(4.02 → 4.03)

Change DN-37LZ30A S/W Version (3.05.2 → 3.07.2)


→ Replace Digital Board

DN-37 42LZ30(A)

DD-LCD TV05-1216

1.Details

DTV has low sound output comparing to Analog TV

2.Cause

By adopting Dolby digital sound which is a sound standard for DTV



1.Subject :

2.Model :


4.Cause


5.Service

Image Saturation (DTV)

(Face and hair has black edge and white band)

DN-37 42LZ30(A)

DD-LCD TV05-1217

Image Saturation (DTV) (Face & hair has black edge & white band)

→ Replace IC810 V4.03 with V4.04 (0IZZTSZ473A)

→ Replace Digital Board (33139D3010A)

1.Details(Occurs when AI On)

①Inverter On

②When channel up, sound is heard

③OSD & Video off

④Index window (Front display) On

⑤Normal input change

2. Cancellation condition

: DC Off / on & AC Off / on


DN-42LZ30(A) SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

DN-42LZ30(A)

DD-LCD TV05-1218

Image Saturation (DTV) (Face & hair has black edge & white band)

Image Saturation (DTV)

(Face and hair has black edge and white band)

1.Details(Occurs when AI On)

①Inverter On

②When channel up, sound is heard

③OSD & Video off

④Index window (Front display) On




→ Replace IC810 V4.04 with V4.05 (0IZZTSZ552A)


* Check point

Al ASIC and EEPROM communication error occurred by

: Replacing R68 10㏀ with 47㏀ to prevent fuse fail,

Changing module operation voltage from 4.5V to 7.5V & Timing shift



1.Subject :

2.Model :


4.Cause


5.Service

No Power

No Power (No LED lighting)

1.Troubleshooting

→ Replace POWER Board (6871TPT296A) (55LP10D)

Substitutive Part-no 6871TPT320D

→ Replace POWER Board (6871TPT320D) (55LP1D)

2. Trouble Range

① 55LP10D :409KG ~ 509KG

① 55LP1D :510KG

55LP10D / 55LP1D

1.Details

ⓐ NO POWER

→ BD101 SHORT

DD-LCD TV05-1219



1.Subject :

2.Model :


4.Cause


5.Service

NO POWER

(Power Flickering)

32LP1D(K)

1.Details

ⓐ NO POWER

▶ F101,BD101 Dead

▶ IC102((F9222L) Dead

▶ IC103(VIPER22A) Dead

ⓑ Power Flickering

▶ Q102(D12NF06L)Dead

→ Replace POWER BOARD (6871TPT303B/D)

DD-LCD TV05-1220

NO POWER (Power Flickering)



1.Subject :

2.Model :


4.Cause


5.Service

INVERTER :Remove R60 on Inverter PCB


32LP1D(K)

1.Details

①Inverter off


③Sound OK

④OSD & Video off




DD-LCD TV05-1221

32LP1D(K) No Picture with Sound

No Video







1.Subject :

2.Model :


4.Cause


5.Service

Latch up (No Sound/No Picture)

1.Troubleshooting

→ Replace Digital Board (3313TD500031)

2. Trouble Range

① 55LP10D :507KG ~ 510KG

55LP1D

1.Details

HD2 Chip Defect

DD-LCD TV05-1222

1.Details ① Inverter on

② No channel operation/No Sound

③ OSD & Video off

④ Index window (Front display panel) Off

⑤ No input change

⑥ Only Power key works on remote control,

unable to operate other keys


DN-30 37 42LZ30(A) SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

DN-30 37 42LZ30(A) NO VIDEO


① Connect Jumper wire at IC314 TP POINT

(HD2 Chip Latch up)

② Remove R250 and connect to upper part of

R250

③ DN-37/42LZ30(A) CPLD UP Data(4.01 → 4.02)

DN-30LZ30(A) CPLD UP Data(4.02 → 4.03)

DN-30 37 42LZ30(A)

2. Cancellation condition : AC Off / on

3. Applied P/No :

① DN-30LZ30A : 411KG~502KG

② DN-37LZ30A : 411KG~502KG

③ DN-42LZ30A : 411KG~502KG

DD-LCD TV05-1223

No Video

(Inverter ON)




1.Details

① Inverter on

② No channel operation/No Sound

③ OSD & Video off

④ Index window (Front display panel) On/Off

⑤ No input change

⑥ No remote control operation



1.Subject :

2.Model :


4.Cause


5.Service

DTV Sound Low

DTV Sound is low





ⓑS/W UP Data


(4.02 → 4.03)




DN-37 42LZ30(A)

DD-LCD TV05-1224

1.Details

DTV has low sound output comparing to Analog TV

2.Cause

By adopting Dolby digital sound which is a sound standard for DTV



1.Subject :

2.Model :


4.Cause


5.Service

NO Video (Latch up)

NO Video

(Latch up)

32LP1D(K)


1.Details

①Inverter On

②OSD & Video off

③Index window (Front display panel) Off

2.Defect Cause

ⓐ Flsh ROMDefect(IC101,102)


ⓒ CPU Defect

DD-LCD TV05-1225



1.Subject :

2.Model :


4.Cause


5.Service

32LP1D(K)

→ S/W UP Data using Tera Term program (Up data to 3.18.1 or 3.18.2)


1.Details

Slow motion occurs in a moment while

watching Analog TV

(Same for component input)

DD-LCD TV05-1226

Slow Motion while watching Analog TV (same for component)

Slow Motion while watching Analog TV (same for component)



1.Subject :

2.Model :


4.Cause


5.Service

DN-37 42LZ30(A) NO VIDEO(Latch up)





ⓑS/W UP Data


(4.02 → 4.03)

Change DN-37LZ30A S/W Version (3.05.2)

Change DN-42LZ30A S/W Version (3.12.2)


DN-37 42LZ30(A)

1.Details

①Inverter On

②No Channel operation/No Sound

③OSD & Video off

④Index window (Front display panel) on /off

⑤No input change

⑥No remote control operation

2. Cancellation condition : AC Off / on

3. Applied P/No :

① DN-37LZ30A : ~505KG

② DN-42LZ30A : ~505KG

DD-LCD TV05-1227

No Video (Latch up)

(Inverter ON)






1.Subject :

2.Model :


4.Cause


5.Service

Unable to receive Analog TV

1.Unable to receive Analog TV


1.Troubleshooting]


→ Replace Analog Boad Board (3313TD3027A)

32LP1D(K)

DD-LCD TV05-1228






setup is normal



1.Subject :

2.Model :


4.Cause


5.Service

NO Video(Latch up)

1.Troubleshooting

→ Replace Digital Boad Board (3313TD3038A)

2.Trouble Range

→ 506KG~

37LP1D

1.Details

①Inverter On

②OSD & Video off

③Index window (Front display panel) Off

DD-LCD TV05-1229

Defect Cause

ⓐ Flash ROM Defect(IC101,102)


ⓒ CPU Defect


RM-30LZ50/DN-30LZ30A SVC One-Point

1.Subject :

2.Model :


4.Cause


5.Service

RM-30LZ50/DN-30LZ30A No Picture with Sound

RM-30LZ50/DN-30LZ30A

1.Details

①Inverter off


③Sound OK

④OSD & Video off


2. Cancellation condition : DC Off / on & AC Off / on

3. Applied P/No :

① RM-30LZ50 : 411KG~412(8.1V)

② DN-30LZ30A : 411KG~502(8.1V)

INVERTER VER8.1 :Remove R60 on Inverter

PCB (6632L-0048D/E)※ MODULE R/NO: 6304FLP157A

DD-LCD TV05-1230

No Video







1.Subject :

2.Model :


4.Cause


5.Service

No Power

NO POWER

▶ No lighting of Power LED

1.Troubleshooting

▶ F101,D162 Dead

→ Replace POWER Board (6871TPT315A)

2.Trouble Range

→506KG~510KG

37LP1D

1.Deos power 33V,3.4V,18V,6V,12V,5V have output voltage?

2.Does DB101 have output voltage?

3.Is F101 open?

4.Is D162 shorted?

DD-LCD TV05-1231



1.Subject :

2.Model :


4.Cause


5.Service

No Power

ⓐ NO POWER

▶ No LED lighting of Power

1.Troubleshooting

▶ F101,D162 Dead

→ Replace POWER Board (6871TPT315A)

2.Trouble Range

→506KG~510KG

42LP1D(K)

DD-LCD TV05-1232

1.Deos power 33V,3.4V,18V,6V,12V,5V have output voltage?

2.Does DB101 have output voltage?

3.Is F101 open?

4.Is D162 shorted?



1.Subject :

2.Model :


4.Cause


5.Service

No Picture with Sound

1.Troubleshooting

→ Replace Module (6304FLP353A(295A)

LC420W02- B6K2(1))

→ Be able to replace T-CON Board only

(6870C-0028D → 6870C-0028E)

2.Trouble Range

→ 506KG~507KG

42LP1D(K)

1.Details

①Inverter off


③Sound OK

④OSD & Video off


2. Cancellation condition :

→ Module T-CON Board Fuse(F1)

open (LC420W02-B4K4)

DD-LCD TV05-1233

1.Details

ⓐ NO Video

①Inverter On

②OSD & Video off

③Index window (Front display panel) ON



1.Subject :

2.Model :


4.Cause


5.Service

Unable to receive analog TV

1.Unable to receive analog TV


1.Troubleshooting

→ Replace Analog Boad Board (3313TD4009A)

→ Replace Tuner 6700NF0019B or 6700NF0019C can be replaced, too

2.Trouble Range

→ 506KG~

42LP1D(K)

DD-LCD TV05-1234






setup is normal

Date post:	03-Jan-2016
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