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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG29CC9RL
Does not turn on, power supply (0) voltsResistor r883 open next to relay rl801After the replace, the TV started working againPATRICK
LGRP20CB62
Tsound is no contrast, it does not workCheck d 502, which is on the abl line, pin 8 of the flybackMeasure on the x10 scale, because it may be leaking; and then replace it of course.DANGRA ELETRÔNICA SÃO PAULO
LG21FU6TL
Reduced frame power supply with 100voltsReplace q801 with leakpedrinho tela quente
LGTRG-LRG-T4-Z4
21FU6TL
Reduced frame power supply with 100voltsReplace q801 with leak
LG21FU1RL
MC059A
It turns on and off, you press the channel button and it turns on and off againThen you hold down the channel key and it keeps turning on and off then you open the screen to see if the screen is open but it will come with a delay lineI replaced the eprom memory, solved the mystery (solved)Luis carlos
LG29FX5R
Cold does not turn on after + or - 1 minute turns onC817 100n/50v changing to more
LGRP-14CB20A
Dark image contrast does not workOpen resistor r547POLACO ELETRONICAESP2000
LGTV21FJ6RB
Frey-bque in worshipI replaced the original frey-bque with the toshiba at-2079 - case solvedLECHESKI
LG42LH40ED
LJ92J
TV turned on after turning it off didn't turn on only after a day or moreTsound are 601 onlyI used the rework station very carefully so as not to overheat the ci601, I repeated the operation three times waiting for it to cool down, tsound was no more defect, it turns on normally, I also replaced the dicipator, I put a bigger one, it reduced the temperature, everything was ok. I hope I helped, hugs, Carlos
LG42PJ250
No imageT501 with broken primary coilClose the wire carefully and re-solder the terminaleletronicaoeste
LG21FJ8RL
Does not tune the channel without 30v on the varicap.R114 (30k) open, between q104 and q103. is close to the varicap.Manoel (Noca)
LG15Q90A
SC023A
Turns off in the control but the tube remains litQ 013 shortReplace q 013 a733 bc 557 It is equivalent check emitter base collectorclaudinei aparecido ferre
LG21FU4RL
Turning offRemove the q16 protection horiz.dicas davi fish-manatee-paDAVi
LGRP29CC26
TV worked but kept going out of tune, leaving channels;After some tests, I found that the voltages on pins 57 (scl) and 58 (sda) of the computer were varyingI replaced the micro (ic 11) and the TV started working normally again.neilson nicacio (sonivídeo assistência)
LG21FX5L
Tsound is no audioIt's not the decoderReplace the memory and go for the hugDA SILVA-JI-PARANA-RO
LG29FU1RL
TV turns on normally, then starts to turn off and on intermittentlyTransistor q809, with collector-emitter leakage.Replace even if the measurement was normalRivaldo
LGRP20CC25
Strips of approximately 10 cm at the bottom and top of the screen.Eeprom.I went into service mode and adjusted it and it was fine.Armando Eletronica EvoluSom de Olímpia.
LGTV2934SKY
SK-91
Fabric like rainbowDefective vertical outletReplaceEletroClaudio Aguas Belas
LGCP-20J50
MC-83A
Closed vertical, varying height or tremulousReplace c316 and c308ECJ
LGRP20CB25A
MC059A
Without horizontal synchronization.R512 of 4k7, was measuring 5k1 (it comes out of pin 18 of ic501.Just replace the precision resistor.gmcmaster10