LG 2006 LCD TV one point repair tips good

DD-LCD MNT05-1202 All LCD Module ModelsDD-LCD MNT05-1203 All LCD Module Models DD-LCD MNT05-1204 All LCD Module Models DD-LCD MNT05-1205 All LCD Module Models DD-LCD MNT05-1207 All LCD

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Great Company Great People

LCD TV One Point Data

Contents

- Model Classification

- History by Model

LGE Confidential

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

DD-LCD TV05-1204 Transient phenomenon in MODULE All LCD Module Models

DD-LCD TV05-1204 Transient Phenomenon in MODULE All 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

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DD-LCD MNT05-1202 All LCD Module Models

DD-LCD MNT05-1208 All Models LIPS Applied

DD-LCD MNT05-1209 All Module Models

DD-LCD MNT05-1217 All Module Models

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

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ⓐ Working error by supplier

Unable to mount on the wall

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Unable to receive Analog TV

1 Unable to receive Analog TV

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

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RM-30 32LZ50 Glitter NOISE SVC One-Point

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 changing 470㎌/16V Capacitor

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

DD-LCD TV05-1203

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① Inverter off

② Channel up/Down: Normal

③Sound: OK

④OSD & Video off

⑤Input change: Normal

2 Cancellation condition : DC Off / on &

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RM-30 32LZ50 Picture NOISE SVC One-Point

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

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RM-23LZ50 Auto Volume Up SVC One-Point

- 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

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Unable to receive analog TV

1.Unable to receive analog TV2.DTV reception is normal

1.Troubleshooting]

→ Replace TU401 (6700NF0019B)

→ 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

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

1-2 Replace MAIN PCB → 3313TN1030A

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POWER KNOB Defect

POWER KNOB pushed inward

1-1.Power Knob is pushed inward

causing trouble to operateDD-LCD TV05-1209

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②OSD & Video off

③Index window (Front display panel) OFF

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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

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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)

DD-LCD TV05-1213

DN-37LZ30

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LCD TV Option Key One-Point

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

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

- Default is in English, Key setup is required

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RM-32LZ50 Picture NOISE SVC One-Point

④OSD & Video off

⑤Input change: Normal

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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) Change DN-42LZ30A S/W Version (3.12.2 → 3.14.2)

→ 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

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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

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1.Details(Occurs when AI On)

①Inverter On

②When channel up, sound is heard

③OSD & Video off

④Index window (Front display) On

2 Cancellation condition

: DC Off / on & AC Off / 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

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④OSD & Video off

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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

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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

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

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Change DN-37LZ30A S/W Version (3.05.2 → 3.07.2) Change DN-42LZ30A S/W Version (3.12.2 → 3.14.2)

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

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→ Replace Digital Board (3313TD3026A)

1.Details

①Inverter On

②OSD & Video off

③Index window (Front display panel) Off

2.Defect Cause

ⓐ Flsh ROMDefect(IC101,102)

ⓑ HD2 IC Defect (IC100)

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

→ Replace Digital Board (3313TD3026A)

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)

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

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

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Unable to receive Analog TV

1.Unable to receive Analog TV2.DTV reception is normal

1.Troubleshooting]

→ Replace TU401 (6700NF0019B)

→ Replace Analog Boad Board (3313TD3027A)

32LP1D(K)DD-LCD TV05-1228

setup is normal

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②OSD & Video off

③Index window (Front display panel) OffDD-LCD TV05-1229

Defect Cause

ⓐ Flash ROM Defect(IC101,102)

ⓑ HD2 IC Defect (IC100)

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④OSD & Video off

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

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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?

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④OSD & Video off

②OSD & Video off

③Index window (Front display panel) ON

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Unable to receive analog TV

1.Unable to receive analog TV2.DTV reception is normal

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

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Số trang	37
Dung lượng	3,31 MB