LG 2006 LCD TV one point repair tips good

Great Company Great People LGE Confidential LCD TV One Point Data Contents - Model Classification - History by Model 2006.01.05 Display Global CS Group Contents Serial DD-LCD DD-LCD DD-LCD DD-LCD DD-LCD DD-LCD DD-LCD Number TV05-1201 TV05-1202 TV05-1203 TV05-1204 TV05-1204 TV05-1204 TV05-1204 Defect Condition Model Applied Picture NOISE LB563B-EA No FAN Operation L2320AL.ALKRT(L2320T/A) White Adjustment L2320AL.ALKRT(L2320T/A) Caution: 19″Main PCB Mix L1910 Assembly Compatibility with Fujitsu Module LB782F-UD Picture NOISE L1910PM.AFEUQ White Screen All LCD Module Models DD-LCD TV05-1204 DD-LCD TV05-1204 DD-LCD TV05-1204 V-Roll (Broken image) All LCD Module Models V-Line Defect All LCD Module Models MODULE Picture NOISE All LCD Module Models DD-LCD TV05-1204 DD-LCD TV05-1204 MAIN NO POWER LCD Models V-Tab Line Defect All LCD Module Models DD-LCD TV05-1204 DD-LCD TV05-1204 LIPS Picture Shaking All Models LIPS Applied MODULE Rainbow All Module Models DD-LCD DD-LCD DD-LCD DD-LCD Cell Gap Mura All LCD Module Models H-Line Defect All LCD Module Models MODULE Diffuser Stain All LCD Module Models MAIN NO RASTER LCD Models No crystal in MODULE All LCD Module Models Dark Picture on Top & Bottom (Picture appears & Disappears) All LCD Module Models TV05-1204 TV05-1204 TV05-1204 TV05-1204 DD-LCD TV05-1204 DD-LCD TV05-1204 LB782F-UD DD-LCD TV05-1204 DD-LCD TV05-1204 Transient phenomenon in MODULE All LCD Module Models DD-LCD TV05-1204 DD-LCD TV05-1204 MAIN Picture Flickering LCD Models 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) Transient Phenomenon in MODULE All Module Models Great Company Great People Shortcut Contents Serial Number Defect Condition Model Applied DD-LCD MNT05-620 Picture NOISE LB563B-EA DD-LCD MNT05-818 No FAN Operation L2320AL.ALKRT(L2320T/A) DD-LCD MNT05-819 White Adjustment L2320AL.ALKRT(L2320T/A) DD-LCD MNT05-0915 Caution: 19″Main PCB Mix L1910 DD-LCD MNT05-0915 L1910PM.AFEUQ DD-LCD MNT05-1201 Assembly Compatibility with Fujitsu Module LB782F-UD Picture NOISE DD-LCD MNT05-1202 White Screen All LCD Module Models DD-LCD MNT05-1203 V-Roll (Broken image) All LCD Module Models DD-LCD MNT05-1204 V-Line Defect All LCD Module Models DD-LCD MNT05-1205 MODULE Picture NOISE All LCD Module Models DD-LCD MNT05-1206 MAIN NO POWER LCD Models DD-LCD MNT05-1207 V-Tab Line Defect All LCD Module Models DD-LCD MNT05-1208 LIPS Picture Shaking All Models LIPS Applied DD-LCD MNT05-1209 MODULE Rainbow All Module Models DD-LCD MNT05-1210 Cell Gap Mura All LCD Module Models DD-LCD MNT05-1211 H-Line Defect All LCD Module Models DD-LCD MNT05-1212 MODULE Diffuser Stain All LCD Module Models DD-LCD MNT05-1213 MAIN NO RASTER LCD Models DD-LCD MNT05-1214 No crystal in MODULE All LCD Module Models DD-LCD MNT05-1215 Dark Picture on Top & Bottom (Picture appears & Disappears) All LCD Module Models DD-LCD MNT05-1216 Transient phenomenon in MODULE All LCD Module Models DD-LCD MNT05-1217 Transient Phenomenon in MODULE All Module Models DD-LCD MNT05-1218 MAIN Picture Flickering LCD Models DD-LCD MNT05-1219 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) Great Company Great People LB782F-UD Shortcut 32LP1D(K) SVC One-Point DD-LCD TV05-1201 1.Subject : 32LP1D(K) Unable to mount on the wall 2.Model : 32LP1D(K) 3.Defect Condition : Unable to mount on the wall (Standing is OK) 4.Cause 1.Details ⓐ The right tab of rear metal is too small to be screwed 2.Defect Cause ⓐ Working error by supplier 5.Service 1.Troubleshooting → Replace Rear Metal (4951TKK238G) 2.Trouble Range → 507KG ~ 508KG Others → 503KG ~ 504KG : 4951TKK238A → 505KG ~ : 4951TKK238G Prepared by :Display Division GCS Group CS2 Call 080-647-7777 Great Company Great People 32LP1D(K) SVC One-Point DD-LCD TV05-1202 1.Subject : Unable to receive Analog TV 2.Model : 32LP1D(K) 3.Defect Condition : Unable to receive Analog TV DTV reception is normal 4.Cause Unable to set up analog channels for automatic channel setup Only DTV channel setup is possible for automatic channel setup Be able to set up channels by replacing TU401 tuner 5.Service 1.Troubleshooting → Replace TU401 (6700NF0019B) → Replace Analog Board (3313TD3027A) Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 RM-30 32LZ50 Glitter NOISE SVC One-Point DD-LCD TV05-1203 1.Subject : RM-30 32LZ50 Screen Glitter NOISE 2.Model : RM-30LZ50/32LZ50 3.Defect Condition : Irregular glittering lights on screen 4.Cause 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) 5.Service Remove C857 220㎌/16V and replace with 470㎌/16V Capacitor as shown in the picture PART-NO: 0CE477CF618 ※ Capacitor polarity check required Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 RM-30LZ50/DN-30LZ30(A) SVC One-Point DD-LCD TV05-1204 1.Subject : RM-30LZ50/DN-30LZ30(A) No Picture with sound 2.Model : RM-30LZ50/DN-30LZ30(A) 3.Defect Condition : No Video (No picture with sound) → Occurs when DC is On (Occurs as turning on with remote control after being left for hours) 4.Cause 1.Details ①Inverter off ②Channel up/Down: Normal ③Sound: OK ④OSD & Video off ⑤Input change: Normal Cancellation condition : DC Off / on & AC Off / on 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) 5.Service INVERTER VER6.0 : Delete Q8 & Q9 on Inverter PCB (6632L-0048C) ※ MODULE R/NO: 6304FLP122A Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 RM-30 32LZ50 Picture NOISE SVC One-Point DD-LCD TV05-1205 1.Subject : RM-30 32LZ50 Picture NOISE 2.Model : RM-30LZ50/32LZ50 3.Defect Condition : Noise at vertical lines as JITTER NOISE 4.Cause Defect Cause: IC505 5V LINE Ripple NOISE Remove the noise by using 47㎌/16V Capacitor Part Spec: 47UF 16V 20% 85STD (P/No.: 0CE476CF638) 5.Service Add capacitors at both ends of IC505 PART-NO: 0CE476CF638 ※ Capacitor polarity should be checked Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 RM-23LZ50 Auto Volume Up SVC One-Point DD-LCD TV05-1206 1.Subject : RM-23LZ50 Auto Volume Up 2.Model : RM-23LZ50 3.Defect Condition : RM-23LZ50 Auto Volume Up - Volume suddenly goes up when power is on 4.Cause 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) 5.Service Remove wafer and solder Connector Lead PART-NO: 6871TST630A ※ Lead should remain as it is Can be replaced with 6871TST630A Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 37LP1D SVC One-Point DD-LCD TV05-1207 1.Subject : Unable to receive analog TV 2.Model : 37LP1D 3.Defect Condition : 1.Unable to receive analog TV 2.DTV reception is normal 4.Cause Unable to set up Analog channel for automatic channel setup Be able to set up only DTV channels for automatic channel setup By replacing TU401 tuner, channel setup is normal 5.Service 1.Troubleshooting] → Replace TU401 (6700NF0019B) → Replace Analog Board (3313TD3037A) Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 32LP1D(K) SVC One-Point DD-LCD TV05-1220 1.Subject : NO POWER (Power Flickering) 2.Model 32LP1D(K) : 3.Defect Condition : NO POWER (Power Flickering) 4.Cause 1.Details ⓐ NO POWER ▶ F101,BD101 Dead ▶ IC102((F9222L) Dead ▶ IC103(VIPER22A) Dead ⓑ Power Flickering ▶ Q102(D12NF06L)Dead 5.Service → Replace POWER BOARD (6871TPT303B/D) Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 32LP1D(K) SVC One-Point DD-LCD TV05-1221 1.Subject : 32LP1D(K) No Picture with Sound 2.Model : 32LP1D(K) 3.Defect Condition : No Video (No picture with sound) → Occurs when DC is On (Occurs as turning on with remote control after being left for hours) 4.Cause 1.Details ①Inverter off ②Channel up/Down: Normal ③Sound OK ④OSD & Video off ⑤Normal input change Cancellation condition : DC Off / on & AC Off / on 5.Service INVERTER : Remove R60 on Inverter PCB ※ MODULE R/NO: 6304FLP163A Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 55LP1D SVC One-Point DD-LCD TV05-1222 1.Subject : Latch up (No Sound/No Picture) 2.Model : 55LP1D 3.Defect Condition : 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 4.Cause 1.Details HD2 Chip Defect 5.Service 1.Troubleshooting → Replace Digital Board (3313TD500031) Trouble Range ① 55LP10D :507KG ~ 510KG Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 DN-30 37 42LZ30(A) SVC One-Point DD-LCD TV05-1223 1.Subject : DN-30 37 42LZ30(A) NO VIDEO 2.Model : DN-30 37 42LZ30(A) 3.Defect Condition : No Video (Inverter ON) → Occurs when DC is On (Occurs as turning on with remote control after being left for hours) 4.Cause 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 Cancellation condition : AC Off / on Applied P/No : ① DN-30LZ30A : 411KG~502KG ② DN-37LZ30A : 411KG~502KG ③ DN-42LZ30A : 411KG~502KG 5.Service → Replace Digital Board 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) Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 DN-37 42LZ30(A) SVC One-Point DD-LCD TV05-1224 1.Subject : DTV Sound Low 2.Model : DN-37 42LZ30(A) 3.Defect Condition : DTV Sound is low 4.Cause 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 5.Service → 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 Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 32LP1D(K) SVC One-Point DD-LCD TV05-1225 1.Subject : NO Video (Latch up) 2.Model : 32LP1D(K) 3.Defect Condition : NO Video (Latch up) 4.Cause 1.Details ①Inverter On ②OSD & Video off ③Index window (Front display panel) Off 2.Defect Cause ⓐ Flsh ROMDefect(IC101,102) ⓑ HD2 IC Defect (IC100) ⓒ CPU Defect 5.Service → Replace Digital Board (3313TD3026A) Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 32LP1D(K) SVC One-Point DD-LCD TV05-1226 1.Subject : Slow Motion while watching Analog TV (same for component) 2.Model 32LP1D(K) : 3.Defect Condition : Slow Motion while watching Analog TV (same for component) 4.Cause 1.Details Slow motion occurs in a moment while watching Analog TV (Same for component input) 5.Service → S/W UP Data using Tera Term program (Up data to 3.18.1 or 3.18.2) → Replace Digital Board (3313TD3026A) Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 DN-37 42LZ30(A) SVC One-Point DD-LCD TV05-1227 1.Subject : DN-37 42LZ30(A) NO VIDEO(Latch up) 2.Model : DN-37 42LZ30(A) 3.Defect Condition : No Video (Latch up) (Inverter ON) → Occurs when DC is On (Occurs as turning on with remote control after being left for hours) 4.Cause 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 Cancellation condition : AC Off / on Applied P/No : ① DN-37LZ30A : ~505KG ② DN-42LZ30A : ~505KG 5.Service → 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) Change DN-42LZ30A S/W Version (3.12.2) → Replace Digital Board Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 32LP1D(K) SVC One-Point DD-LCD TV05-1228 1.Subject : Unable to receive Analog TV 2.Model : 32LP1D(K) 3.Defect Condition : 1.Unable to receive Analog TV 2.DTV reception is normal 4.Cause Unable to set up Analog channel for automatic channel setup Be able to set up only DTV channels for automatic channel setup By replacing TU401 tuner, channel setup is normal 5.Service 1.Troubleshooting] → Replace TU401 (6700NF0019B) → Replace Analog Boad Board (3313TD3027A) Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 37LP1D SVC One-Point DD-LCD TV05-1229 1.Subject : NO Video(Latch up) 2.Model : 37LP1D 3.Defect Condition : 1.Details ①Inverter On ②OSD & Video off ③Index window (Front display panel) Off 4.Cause Defect Cause ⓐ Flash ROM Defect(IC101,102) ⓑ HD2 IC Defect (IC100) ⓒ CPU Defect 5.Service 1.Troubleshooting → Replace Digital Boad Board (3313TD3038A) 2.Trouble Range → 506KG~ Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 RM-30LZ50/DN-30LZ30A SVC One-Point DD-LCD TV05-1230 1.Subject : RM-30LZ50/DN-30LZ30A No Picture with Sound 2.Model : RM-30LZ50/DN-30LZ30A 3.Defect Condition : No Video (No picture with sound) → Occurs when DC is On (Occurs as turning on with remote control after being left for hours) 4.Cause 1.Details ①Inverter off ②Channel up/Down: Normal ③Sound OK ④OSD & Video off ⑤Normal input change Cancellation condition : DC Off / on & AC Off / on Applied P/No : ① RM-30LZ50 : 411KG~412(8.1V) ② DN-30LZ30A : 411KG~502(8.1V) 5.Service INVERTER VER8.1 : Remove R60 on Inverter PCB (6632L-0048D/E) ※ MODULE R/NO: 6304FLP157A Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 37LP1D SVC One-Point DD-LCD TV05-1231 1.Subject : No Power 2.Model : 37LP1D 3.Defect Condition : NO POWER ▶ No lighting of Power LED 4.Cause 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? 5.Service 1.Troubleshooting ▶ F101,D162 Dead → Replace POWER Board (6871TPT315A) 2.Trouble Range →506KG~510KG Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 42LP1D(K) SVC One-Point DD-LCD TV05-1232 1.Subject : No Power 2.Model : 42LP1D(K) 3.Defect Condition : ⓐ NO POWER ▶ No LED lighting of Power 4.Cause 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? 5.Service 1.Troubleshooting ▶ F101,D162 Dead → Replace POWER Board (6871TPT315A) 2.Trouble Range →506KG~510KG Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 42LP1D(K) SVC One-Point DD-LCD TV05-1233 1.Subject : No Picture with Sound 2.Model : 42LP1D(K) 3.Defect Condition : 1.Details ⓐ NO Video ①Inverter On ②OSD & Video off ③Index window (Front display panel) ON 4.Cause 1.Details ①Inverter off ②Channel up/Down: Normal ③Sound OK ④OSD & Video off ⑤Normal input change Cancellation condition : → Module T-CON Board Fuse(F1) open (LC420W02-B4K4) 5.Service 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 Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 42LP1D(K) SVC One-Point DD-LCD TV05-1234 1.Subject : Unable to receive analog TV 2.Model : 42LP1D(K) 3.Defect Condition : 1.Unable to receive analog TV 2.DTV reception is normal 4.Cause Unable to set up Analog channel for automatic channel setup Be able to set up only DTV channels for automatic channel setup By replacing TU401 tuner, channel setup is normal 5.Service 1.Troubleshooting → Replace Analog Boad Board (3313TD4009A) → Replace Tuner 6700NF0019B or 6700NF0019C can be replaced, too 2.Trouble Range → 506KG~ Prepared by :Display Division GCS Group CS2 Great Company Great People Call 080-647-7777 ...Contents Serial DD -LCD DD -LCD DD -LCD DD -LCD DD -LCD DD -LCD DD -LCD Number TV0 5-1201 TV0 5-1202 TV0 5-1203 TV0 5-1204 TV0 5-1204 TV0 5-1204 TV0 5-1204 Defect Condition Model Applied... All LCD Module Models Dark Picture on Top & Bottom (Picture appears & Disappears) All LCD Module Models TV0 5-1204 TV0 5-1204 TV0 5-1204 TV0 5-1204 DD -LCD TV0 5-1204 DD -LCD TV0 5-1204 LB782F-UD DD -LCD. .. Picture NOISE All LCD Module Models DD -LCD TV0 5-1204 DD -LCD TV0 5-1204 MAIN NO POWER LCD Models V-Tab Line Defect All LCD Module Models DD -LCD TV0 5-1204 DD -LCD TV0 5-1204 LIPS Picture Shaking All Models