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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG42LK450-SA
Turning off by itselfLack of grounding on the power supply plates with the mainSolder the grounding edges of the main and power supply platesAlex Lopes <small>This email address is being protected from spambots. You need JavaScript enabled to view it.</small>
LG47LB7DF
Dark screen, no image, lamps do not light.Check f700, open case possible q 706 and q707 shorted, usually cold solder causes them to burnReplace f700, q706, q707 and check possible annealed welds.Assolini BR
LG32LH35FD EAX60990802(0)
Switch-on delay, audio delay, switch-off delaySector x201 (crystal glue) removal with heat to avoid removing the resistor from under the glue, in case it breaks, measuring on the board is equivalent to 60kRemove the glue carefully, always heating at 250/300 degreesMaike Sorriso
LG FLATRONIPS224V-PN
PNA.AWZHRVS
No image of the pc, just warning that tsound is no signalCi-100 regulator, has 2 voltage outputs 3.3v and 1.2v (1.2v was missing)Replace ape8839amp-cPU4ASL
LG29FS4RL
High power supplyR837 5,6 kFofão estância
LG60PB6500
EAY63168603
Relay won't turn on without power supplys vs and tsound is r806 smd on the power supply boardRelay won't turn on without power supplys vs and tsound is r806 smd on the power supply boardRelay won't turn on without power supplys vs and tsound is r806 smd on the power supply boardantonio nobrega patos pb
LG37LH20R
LH
Hdmi inputs 1 and 2 do not workQ 301 and q300 leaking, burning with lightningReplace q 301 e q300ELETRONICA RODRIGUES ALUMINIO SP
LG49LJ5550
TV didn't work just trying to flash the stand by, it had 5v and didn't release voltage from the power supply...Wifi board near on-off button shortedI released it and it worked instantly... now just get another one.Max Coelho
TV LG50PB560B
18997043159WHATS
Does not turn on or standbyC204 shorted 150uf/35vReplace c204MARCELO RODRIGO QUINELATTO
LG40LF6350
Burning ledsHigh voltage at the power supply output for the LEDsReplace the LEDs and reduce the voltage by changing the 3r2 resistor r816 for 8rde 2w, the voltage from 197v dropped to 181v.Samuel Silva
LG21FJ8RL
EAX5773090614
Vertical closedSetting up protectionIn my case it was just the dry c307 shorted, setting up protectionEletrônica Martins
LG 29FS4RL
CW62C
Keyboard doesn't work. When it turns off via the control it falls into the avenue. lower the volume on the control and drop it to the channelC15 shorted.Ricardo Silva
LG60PA6500
Tsound is no imageCold solder on the ysus board transformer (yellow transformer model ebj60730..)Solve transformerEletronicaaeb
LGRP20CC97
Vertical closed, normal soundR301=15k openReplaced and resolved, one more to help colleaguesAntonio Carlos(Eletrônica Renascer)
LG29CC25
MC022A
High power supply (150v) goes into protection. delete stdby. c804 loadedR833 aberto (0,68r)Ricardo Silva
LG50PB650B
No image with audio02 transistors 30f133 shorted (SMD) + ceramic capacitor 331 burst, just replace these 3 componentsreginaldo moronte,eletronica junior caldas novas
LG21FU
ULTRA SLIM
It only turns on when it heats up.Replace capacitors c810, c814, and c847.MARCONES DE ARARIPINA-PE
LG21FU
It takes a long time to turn on, or it only turns on when it heats up.C814, c847, and c810 with low capacitanceReplace c814, c810 and c847.MARCONES DE ARARIPINA-PE
LG29FX5CL
CW-62A
Vertical closed with the white line in the middle/ sometimes the image wanted to open and sometimes it even opened completely when I touched r310R328 of 47k was 47.2k also r308 47kReplace the two resistors / tip: they are precision resistors!GENILSON
LG47LA6130
No image just blacklight onCabo flat tconGood cleaning and 2 layers of durex, it was fine, good luckJhone eletronica