Lg Repair Tips

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Results: 4876

Make	Model	Symptom	Problem	Solution	By
LG	CM8440	Volume above 30 the audio stops for 7 seconds and returns	Pfc voltage is 380v, but it only had 364v, I found the smd resistors (r917, r918, r919) changed, the 3 are 1m	I replaced the 3 1m resistors, in my case, this solved the problem.	C-audio eletronica (SM-AL)
LG	32LK330-SB	Tv was admitted, coming from another assistance wsound the t-con.tv board had been condemned to be completely inoperative! When opening, I disconnected the flat (pci main/t-con) and the TV turned on, tsound was sound but, of course, no image. the t-con fuse was open, when replacing it, it burned again... carrying out a quick visual inspection and continuity test on the smd capacitors, I checked the capacitor in position c31, in the dc/dc circuit (t-con ) shorted.	I removed the capacitor and replaced the fuse. The TV turned on again and had no problems. I chose to leave it without the capacitor under test and it continued to work perfectly until delivery to the customer. A big hug to everyone and don't forget to post repair tips, this is one of the best tools for the technician!	Removal of capacitor c31 on the t-con board (dc/dc power supply), shorted smd. circuit worked fine without it!	AnisioH
LG	21FU4RL	Arming and disarming, generates and then cuts	R815=91k and r843=39k open	I replaced and ran to another one	Antonio Carlos (Eletrônica Renascer)
LG	42PX4RV	Image with grain	C77(10nf) defective on the ysus board	Replace capacitor	Mário Pereira
LG	RP21FD10	When plugged into the socket it gives just an oscillation as when it turns on and the stand by does not light up; Turning it on and off several times, sometimes it turns on, and when you turn it off, it doesn't turn on again. Sometimes it even felt like cold welding, out of nowsound the standby would come on but then go off.	When analyzing the power supply, I didn't find any damage to any component, but when testing the d802, I found a current leak and the standby LED came on after replacing it with an FR05 diode, but the TV still didn't always turn on when pressing the power button, So I also replaced the d810 with the same one and it worked perfectly.	Replace the components mentioned and move on to another device.	Jailson Lima
LG	20CB25	Burned horizontal transistor(tt2170)	Replace for d5024 if you don't find it original and run for the hug		digital system
LG	LG LCD 29""	It turned on, tsound was normal sound, the lamps came on but the screen was white with no image	Regulator from 3v3 to 2v5 on tcon in short	I couldn't find any regulator with the same specifications so I put a 10r resistor between pins 1 and 3 and the voltage was 2.41v and the TV was like new.	Eduardo Luis Vinoti
LG	32LN540B	TV turns on normally, the LEDs turn on and the screen turns gray	C104 and 103 shorted	And replace c 104 and 103 on the display ruler and go and test the é nor later	Rubens P afonso
LG	21FU4RL	Arming and disarming	R806=39k aberto	I replaced and ran to another one	Antonio Carlos (Eletrônica Renascer)
LG	21FU4RL	Totally inoperative charge retained in the power supply capacitor	Photo coupler and r842	I replaced the photo coupler, the TV turned on, the stand armed and turned off then I replaced the r842=27k, replaced it with a 33k one and the screen was brand new	Antonio Carlos (Eletrônica Renascer)
LG	50PB560B	LED blinks but doesn't turn on	Avaria na y-sus capacitor c204 (150/35v) with leakage.	Replace capacitor	WELLINGTON
LG	50PB560B	TV does not turn on and the stand-by LED is blinking, the T-Con controller board LED is also off. I tried running auto gen which also didn't work.	I found the electrolytic capacitor on the y-sus board position c204 at the bottom of the board 150mf 35v in a direct short. I replaced it and it worked perfectly.		Invision Assistência Técnica
LG	21FU4RL	TV turns on, when we press power the LED goes off and then returns to stand bay, triggering protection. However, when we release Q16, the TV turns on and a normal image appears.	R301 of 15k was changed to 18k.	Replace 15k resistor r301 with 18k for another 15k.	Rdoantonio Acre
LG	42LK450	Plug it into the socket and the standby LED doesn't light up, check the main board for something shorted.	Check ic102.	I replaced the main board eax64290501(0) and it worked normally, good luck.	Eronaldo (erontec)
LG	29FS4RL CW62C	TV of the match but then turns off	R819 open, on the 14v line of the secondary transformer.	R819 replacement	elias
LG	32LB9RTA	Does not turn on, stand by LED is off	Cause was electrical discharge caused by lightning, defect in the power supply I replaced all these components found - u502 - ice1565j short, c506 - 10uf 50v open, zd501 - c3v3 short, c507 - 47uf 50v replace without measuring, pc130, pc150, pc200, pc500 - nec2571a short and leak, replace el817a, q501- code zg = ktn2222a smd - short and r506,505 - 10k smd with leak and 0.50uf smd capacitor short, I removed it from scrap.	TV was ok, defect resolved	Andrei
LG	21	Image with the vertical closed at the bottom with stripes only with a very small image	R311	R311 close to q301	Eletrônica Carlos Viseu Pará
LG	29FU6TL	TV turned on with audio but no image	Ci de vertical la 78141, capacitor c304 - 100mf/50v, r306 - 33k, r332 - 330k	Replace and defect resolved	George Luis
LG	55LE5300	The red power LED turns on, presses to turn it on, changes to blue and doesn't work	Change the ic101 l6599d on the power supply board, this IC is responsible for the 12v and 24v power supplys		eletrônica valdecir
LG	HT-806ST	Does not turn on or standby	D953 shorted	Replace d953 rl104 I put fr104 it worked	beto2828