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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LGRP21FE85G
TV turns on for a few seconds and turns off, triggering the protection, if you reduce the brightness too much, leaving the image excessively dark, it can workSupply +b 1r2 resistor fr403 (110v) changed to approximately 2ralisson
LGCP 20B86
Dark screen black writingC 814Replace c 814 100x160vFelex
LG14FK3RB
MC059D
Turn it on and go into protectionLightningThe 2 diode 1n 4148 nº 501 and 403ELETRONICA CB ALVES, CACHORRAO
LGRP20CB62
Horizontal output d2627 shorted, does not turn onHigh voltage leakage due to a break in the flay back mat cable caused the tsh d2627 to burnThe flay mat cable was recovered and the tsh was replaced and as I couldn't find the d2627 I replaced it with a d2689, the TV was broken, but I suggest you replace it for a new flay backJOANILDO SILVA
LGCP14CBA
Horizontal and vertical synchronization. no charactersDz. 412 / 9in1Replace the same and go out for the hugeletronica dimencional
LGRP14CB25A
I'm soundOpen resistor fr825. feeds the i.c. departure - 10rsamuel Backes
LGCP29Q12P
Turning offCap esr baixo 33mf/160vReplace c818 33mf/160vLIDER ELETRONICA
LG21FU4RL
CW81A
TV turns on and off then stand-by LED stays onC311 -2200x25vReplaceEMERSON RIBEIRO
LGLG 29CC26
Tsound is image and sound after a few minutes sound and image disappears, getting out of tune and then dark screen with filament litReplace microna e 24c16Obs filament lit, increasing the screen you will not see any characters or brightnessELETROICA CB ALVES CACHORRÃO
LG21FU1R
Does not tune in to any TV channels.R 114, 30k fully open. You can use a 33k one if you can't find a 30k one.Carlos Maia
LG21FJ6RB
When the power key is turned on, the LED comes on, but when the horizontal power supply +b is started, the LED goes out at 3V.Flyback always generates high voltage; I replaced the flyback with the d toshiba at-2079-ao it was fineTraca do flay-beckmarcos melo cascavel ceara
LG47LY95 LCD TV
LD75A
No sound, negative picture. low voltage at pin 7 connector p202Check q202 (ap72t02gh), u203 (apu3037m), q203 (ap60t03gh) and connector p202 in psu. also check or replace c221, c222, c223 and c232.John Doe
LG47LF66 LCD TV
No power.Change c202, c206 and c217 (all 2200uf/10v) on ip board (power supply inverter board).John Doe
LG32LC45 LCD TV
LD73A
No sound, no picture, display "no signal". backlight ans osd menu ok. led is green color light.Try update firmware, if not ok then replace main signal board.John Doe
LG32LC56ZC LCD TV
LD73A
Stuck in standby.Check and replace c204. if pcb board discolored around r208 then replace psu.John Doe
LG32LC56ZC LCD TV
LD73A
Led flashes from red to green, no start-up.Replace c202, c206, c217 and c218 (2200uf/10v all), and c226 (470uf/25v).John Doe
LG32LC56 LCD TV
LD73A
Distorted picture, divided in several parts.Replace t-con board (part number: 218394).John Doe
LG37LE2RZJ LCD TV
LP61A
No functions in remote.Replace smd capacitor at ir receiver output.John Doe
LG37LC2R LCD TV
LP61A
No backlight.Check the smd fuse f1 on inverter board for open circuit.John Doe
LG37LE2R LCD TV
LP61A
No start-up.Replace smd regulator tl431 (u130) in psu.John Doe