LG TV Repair: Common Faults and Solutions.


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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
TV LG29FE8RL
Turn on and offResoldar jamper fb 833 (+b) do trafo t801Ademar / Videira sc
TV LGTC 2033N
Little +b on the horizontal outlet collectorReplace diode d 825 (it has a short circuit)Ademar / Videira sc
TV LG20CB62
No syncChange the eeprom (ram memory)Ademar / Videira sc
LG20CD2R
No audio or soundReplace ci la 42071 and capacitor c611Ademar / Videira sc
TV LG20CB20
Image without contrastChanging diodes (zd 501) of 9.1 volts d501 and d502 can be used 1n4148Ademar / Videira sc
TV LG21FJ8RL
Turn on and offChanging the vertical output (la 78141) can be used (stv 9325) or (stv 9326)Ademar / Videira sc
LGCP 29K35
Burning the horizontal outletReplace 27k c404 capacitorAdemar / Videira sc
TV LG29K25
Burning the horizontal outletReplace 27k c404 capacitorAdemar / Videira sc
LGCP20K70
Tv without contrastReplace diodes d501 and d502Ademar / Videira sc
TV LGVARIOS
Turns off intermittently/or wheneverCheck the (r420 open or altered) check the resistors that supply the +b of the fly back tsound are two of 1r6 they both have to be good or for safety change them and finally remove the q 16 (leave it without it)Ademar / Videira sc
LGCP20K40BSR
The TV tries to turn on but goes back to standbyFaulty ci- vertical consuming excessive currentReplace o ic 301 - la7833ALBERTO MASTER
LG21FU4RL
Excessive width and high power supply with 136v27k r842 changed, it is a precision resistorI just replaced it and I got filletcharles cbs
LG21FU4R
Excessive width and high power supply with 136v27k r842 changed, it is a precision resistorIt was just an replace and I get the filecharles cbs
LGCP-20J52
Lights up. The command is given and it appears to turn on but does not turn on, returning to stand-byI removed the c.i from the vertical (la7830) and tested pins 01 and 02 and tsound was a short between them. I changed the vertical c.i. and the cap. of 100mf x 35v.ROBERTO PINTO
LG20CD2R
No image with/normal audioProcessor (ic501)To replaceThis email address is being protected from spambots. You need JavaScript enabled to view it.
LG21FU1RL
When pressing the power key, the LED went off and then came on again, the +b110 voltage dropped.Fr403eltr. cunha pedrosa
LG29FS4RL
Doesn't catchC 826 of 1000uf and 10v in total shortReplace c 826 tv okgeorge pontes
LG21FX5RL
Burning horizontal outletCapacitor 414 (682/1.6kv.) capacitor 417 (220p/2kv.) capacitor 427.Replace them. note: guide to locate components in the electrical diagram=(g4)BARRETO CRUZ
LGRP20CB67
No weapon.Resistor 512Replace the sameBARRETO CRUZ
LG32LX2RZE
Does not turn on or light up oledCapacitor 221 e 222 (100uf/16v) e 213 (2200uf/16v)Replace the sameBARRETO CRUZ