LG TV Repair: Common Faults and Solutions.
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Results: 4834
Results: 4834
LG Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| 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 |
| LG | 22LG30R LP81K | No sound, even through headphones. | Mute activated on sound output | Remove q501 | Joaomvjr |
| LG | CM4460 | It works for a while and freezes and does not accept commands and sometimes turns off | Placa principal transistor smd q501 | ELETRONICA CALLAI |