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
LG PLASMA	TODOS	One or several vertical lines	Loosen and reconnect the x-drive board connectors if the symptom persists	Replace x-drive board	Vosdor
LG PLASMA	TODOS	Turn on and off	Check voltage at points va and vs. Detach the power cable from the x-drive cards. if it stopped turning off	Replace x-drive board	Vosdor
LG PLASMA	TODOS	Turn on and off	Check voltage at points va and vs. Disconnect the power connectors from the y-sus board. release the y-drive board. if it stopped turning off	Y-drive plate replace	Vosdor
LG PLASMA	TODOS	Turn on and off	Check voltage at points va and vs. Disconnect the power connectors from the y-sus board. if it stopped turning off	Y-sus plate replace	Vosdor
LG PLASMA	TODOS	Turn on and off	Check voltage at points va and vs. Loosen the connectors on the z-sus board if it stopped turning off	Z-sus plate replace	Vosdor
LG PLASMA	TODOS	Turn on and off	Check voltage at points va and vs. Loosen the VA and VS connectors if the symptom remains	Replace power supply board	Vosdor
LG PLASMA	TODOS	Without image and with audio	Measure stb pins (5.0v or 3.5v). power on (2.5v~3.5v). y-sus (15v or 17v). do auto gin test. If auto gin doesn't work, change the y-sus board.		Vosdor
LG PLASMA	TODOS	No image and no audio	Measure stb pins (5.0v or 3.5v). power on (2.5v~3.5v). y-sus (15v or 17v). check if the LED on the ctrl board lights up, check the voltages on the regulators and carry out an auto gin test. if auto gin = ok change main board.		Vosdor
LG PLASMA	TODOS	Only turns on on stand-by	Measure stb pin (3.5v or 5v). Release the "power on" pin and check if there is a pulse. If not, change the main board.		Vosdor
LG PLASMA	TODOS	Does not turn on in stand-by	Measure stb pin (3.5v or 5v). If there is no voltage, release the cable from the power supply and main boards and measure again; if there is still no voltage, change the power supply board.		Vosdor
LG	RP-29CC90	This TV came from another workshop that they didn't fix. she would call and after a few minutes he would hang up; and when it turned on, it did not display characters and did not obey remote control and keyboard commands; I immediately thought it was the memory but no, it was the damn defective micronas.	Change the microwave		diego lima nova timboteua pa
LG	CP20J52	After switching on, the vertical image shakes and closes and turns off	Causa capacitor 301 470 k vertical		luiz carlos de freitas
LG	29FS4RLG	Cushion effect, image folded 1cm at the top of the video	Checked the power supply (115v) it was 75v, eliminating the defect in the secondary stage by step in the memory line.	I replaced the memory, the problem was solved.	marcelo marques
LG	32LG30R	Sometimes it wouldn't turn on, the LED would stay bright red, blink twice and stay blue without starting	I removed the zener diodes d112 and d111, replaced the r118 with a 15k one		FLAVIO
LG	RP29CC26	It doesn't turn on, that is, it doesn't start.	Cold solder on q402 on the horizontal and on ic 821 of the power supply.	They were resoldered and it was just a matter of going out for a hug.	Armando de Olimpia Eletronica EvoluSom
LG	RP29FA30A	It didn't work.	T r of the horizontal short, caused by c407=27nf without capacity.	Both components were replaced and it was fine.	Armando de Olimpia Eletronica EvoluSom
LG	21FS6RL	Closed frame slamming vertical	Capacitor c.414 there is no point in measuring, replacing directly		julio de itaguai
LG	RP-20CB62	It doesn't work via the remote control or the keyboard, it only turns on via the power key and doesn't turn off	Memory	Swap memory	ELETRONICA MAURI JUNIOR
LG	CP-20K78 MC	Protection mode	C520,c521 are good	To remove	luciano
LG	21FU4RL	Horizontal burning when turned on	C404 capacitor length 18x1600 volts		HP ELETRONICA