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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG21FJ6RB
Vertical closed with a band of more or less 10 cm in the middle, all variedBroken deflectorRemove it and try to find the broken wire or replace it for a new one, tsound is a possibility that it is recovering the same one.Robson-Eletrônica BA
LG26LG30R
Turns on and off flashing backlightI disconnected jumper j104 and it workedSILVIO
LG29FS4LG
CW62A
Has standby, voltage appears on +b and resets.R861 of 3.9kω changed.TonhoJP
LG42LD450
Turns on normally, backlight stays on for a while, turns off, turns on again and turns off. all normal voltages. After repeating a few times, it turns off.Vr-301, 10k trimpot on plate from aberto power supply.py1acb
LG21FJ8RL
CW81B
No audio.Ic601 (la42102)Eletrônica R-TEC
LG42LH20R
TV turns on and the screen flashes quickly.In my case. the defect was an open register on the reverse lineR313-39k.open..I replaced it and the TV worked.normal..tec.dilson-alagoinhas-ba
LG21FU4RL
No color in rf and avI re-recorded the eeprom and ran to the hugcarloseletronica pe
LGRP-21FE85G
059
Screen washed with return linesIc501 faultyReplace ic-501This email address is being protected from spambots. You need JavaScript enabled to view it.
LG21FU6TL - L4
Doesn't startIc - 804(kia -78ro9pi)Replace the sameBARRETO CRUZ
LG21FB32
Burning horizontal output d2627Changing the flyback and replacing d2627 with bu2508dx, use a good heatsink and smile happilyChanging the flyback and replacing d2627 with bu2508dx, use a good heatsink and smile happilyJoao da Silva
LGCP29K35A
MC-049A
Does not memorize channels (giving the impression that it is out of frequency) the av works normally!!!Case: z101 (x6966d)Replace it - good luck to my forum friends - god bless you all!This email address is being protected from spambots. You need JavaScript enabled to view it.
LG21FU4RLG
When it turns on it comes with AFC off, after a while the image returns to normalReplace electrolytic capacitor c517 0.1/50vReplace the sameDangra Eletrônica
LG14CB25A
It gives a signal that it turns on but does not oscillate horizontally.Burnt horizontal output transistor; when exchanging it for another it burned instantly; wide capacitor exhausted.Changing the wide capacitor (6n2/2kv); horizontal output transistor replaced 2sc6093. returned to normal operating condition.Waldir Salum Junior
LGCP20K40
Doesn't startC815Replacesaffier
LGCP20K40
Doesn't startC-825 100mfsaffier
LG29FU6
Vertical closed from the middle down, image looks like a trapezoid, without characters. You need to open the screen to see the image.R 304 open on the line that goes to the micro, vertical return.arock
LG29FU6
Vertical closed from the middle down, image looks like a trapezoid, without characters. You need to open the screen to see the image.R 304 open on the line that goes to the micro, vertical return.arock
LG14FK3RB
TV with perfect picture but squeaky soundCapacitor c539 o,o22ufAnd just replace and run for the hugJOSE ELIAS
LGRP20CC20
SC-023A
Tv inoperative, no voltage +b secondaryCapacitor c 803 820pf/500v loss of capacity replaceSINVAL SANTANA
LG21FS4RLG
Turns off after some time.Change (r-420 240k) without testing, as it must be changed to more than 150k.Ademar Videira SC