LCD-TV-OnePoint-Guide-HOW-TO-REPAIR-LCD.pdf
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Great Company Great People
LCD TV One Point DataLCD TV One Point Data
Contents
- Model Classification
- History by Model
GoldIran QA Group
GoldIran
M. B. GarmaroodiTVTS@goldiransvc.ir
GoldIran QA Group
RM-30 32LZ50 Glitter NOISE SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
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
GoldIran QA Group
RM-30LZ50/DN-30LZ30(A) SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
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.Details①Inverter off②Channel up/Down: Normal ③Sound: OK④OSD & Video off⑤Input change: Normal
2. Cancellation condition : DC Off / on & AC Off / on
3. Applied P/No : Application Status by Inverter Version① 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)
GoldIran QA Group
RM-30 32LZ50 Picture NOISE SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
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
GoldIran QA Group
RM-23LZ50 Auto Volume Up SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
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
GoldIran QA Group
DN-37LZ30 SVC One-Point
1.Subject :
2.Model Applied :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
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
GoldIran QA Group
RM-32LZ50 Picture NOISE SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
5.Service
RM-32LZ50 No Picture with Sound
INVERTER :Remove R60 on Inverter PCB
※ MODULE R/NO: 6304FLP163A
RM-32LZ50
1.Details①Inverter off②Channel up/Down: Normal ③Sound OK④OSD & Video off⑤Input change: Normal
2. Cancellation condition : DC Off / on & AC Off / on
3. Applied P/No : 411KG~502KG
DD-LCD TV05-1215
No Video(No picture with sound)→ Occurs when DC is On (Occurs as turning on with remote control after being left for hours)
GoldIran QA Group
DN-37 42LZ30(A) SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
5.Service
DTV SOUND LOW
Low Sound for DTV
→ Up Data using Tera Term program① Boot Code change & S/W Up Data
ⓐ Boot Code changeBoot_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.DetailsDTV has low sound output comparing to Analog TV
2.CauseBy adopting Dolby digital sound which is a sound standard for DTV
GoldIran QA Group
DN-37 42LZ30(A) SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
5.Service
Image Saturation (DTV) (Face and hair has black edge and white band)
DN-37 42LZ30(A)
DD-LCD TV05-1217Image 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
GoldIran QA Group
DN-42LZ30(A) SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
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
⑤Normal input change
2. Cancellation condition: DC Off / on & AC Off / on
→ Replace IC810 V4.04 with V4.05 (0IZZTSZ552A)→ Replace Digital Board
* Check pointAl 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
GoldIran QA Group
DN-30 37 42LZ30(A) SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
5.Service
DN-30 37 42LZ30(A) NO VIDEO
→ Replace Digital Board① Connect Jumper wire at IC314 TP POINT
(HD2 Chip Latch up)② Remove R250 and connect to upper part of
R250③ 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 / on3. Applied P/No : ① DN-30LZ30A : 411KG~502KG② DN-37LZ30A : 411KG~502KG③ DN-42LZ30A : 411KG~502KG
DD-LCD TV05-1223
No Video(Inverter ON)→ Occurs when DC is On (Occurs as turning on with remote control after being left for hours)
1.Details ① Inverter on② No channel operation/No Sound③ OSD & Video off④ Index window (Front display panel) On/Off⑤ No input change⑥ No remote control operation
GoldIran QA Group
DN-37 42LZ30(A) SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
5.Service
DTV Sound Low
DTV Sound is low
→ Up Data using Tera Term program① Boot Code change & S/W Up Data
ⓐ Boot Code changeBoot_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 TV05-1224
1.DetailsDTV has low sound output comparing to Analog TV
2.CauseBy adopting Dolby digital sound which is a sound standard for DTV
GoldIran QA Group
DN-37 42LZ30(A) SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
5.Service
DN-37 42LZ30(A) NO VIDEO(Latch up)
→ Up Data using Tera Term program① Boot Code change & S/W Up Data
ⓐ Boot Code changeBoot_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)Change DN-42LZ30A S/W Version (3.12.2)
→ Replace Digital Board
DN-37 42LZ30(A)
1.Details①Inverter On②No Channel operation/No Sound③OSD & Video off④Index window (Front display panel) on /off⑤No input change⑥No remote control operation
2. Cancellation condition : AC Off / on
3. Applied P/No : ① DN-37LZ30A : ~505KG② DN-42LZ30A : ~505KG
DD-LCD TV05-1227
No Video (Latch up)(Inverter ON)→ Occurs when DC is On (Occurs as turning on with remote control after being left for hours)
GoldIran QA Group
RM-30LZ50/DN-30LZ30A SVC One-Point
1.Subject :
2.Model :
3.Defect Condition :
4.Cause
Prepared by :Display Division GCS Group CS2 Call 080-647-7777
5.Service
RM-30LZ50/DN-30LZ30A No Picture with Sound
RM-30LZ50/DN-30LZ30A
1.Details①Inverter off②Channel up/Down: Normal ③Sound OK④OSD & Video off⑤Normal input change
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(No picture with sound)→ Occurs when DC is On (Occurs as turning on with remote control after being left for hours)
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