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 | 42PQ30R | After running for a while, it turns off and keeps restarting and hitting the relay. When doing the auto gen it was found that the main board was bad. | 16v 10uf capacitor c613 which is next to the processor in the main | Always do the auto gen to rule out any effect on the main PCI or other cards. | Carlos Araujo 82993677063 |
| LG | 52LG50FD | Hdmi no signal or invalid format | Bad solder/reflow needed | Plate placed in an oven at 190 degrees for 10 minutes, it started working again. | Cassio Siquara |
| LG | 32LF550B LB55H | No image. audio only. | All back light LEDs shorted. After the replace, they all shorted out again. That's why I noticed the inverter with the q803 shorted out (stay tuned). | I replaced the back light again, replaced the power supply (I had one in stock) and lowered the LED current. To avoid return, I replaced the current of the LED bars. I placed another resistor in series with r816 (2r4 + 1r). the voltage 103.8v dropped to 101.2v, and the bus current was 101ma and dropped to 68ma. | Eletrônica R-Tec |
| LG | 14FK3RB | Normal image, with a hiss in the audio, no voice comes out, just the hiss of the fm radio, xiiiiii | Change cap506 near the rgb connector, replace it with a ceramic 104, you have to put it in and you can't leave it without it. | DJ PITUKA | |
| LG | CM4520 | Cooler does not activate | It is not a defect but an observation | In this sound model, the cooler is only activated from volume 30 | Lucas |
| LG | 32LN5400 | On and off infinitely | Altered or shorted LED bars | I had already done everything to turn off the LEDs and left the TV on for more than an hour and found that it was the LEDs that were causing the defect (solution to replace the LED bars) | SP ELETRÕNICAE SERVIÇOS |
| LG | TV2999LMS LEM8 | Does not generate. 9v missing. | Replace q 432 | RICHARDO SILVA | |
| LG | TV2999LMS LEM8 | Does not generate. +b drops to 78v. standby lights up | D431 e d432 replace | RICHARDO SILVA | |
| LG | 21FJ6RB MC059A | Normal league with a vertical blue stripe with terrace lines | Just change the memory | Dl Eletrônica | |
| LG | 42PT250B | When turned on, the TV lights up, but dark and with a black horizontal stripe at the top and then turns off and only the audio remains | Missing 15v on the buffer board | Resistor position 517 on the 100Ω bμFfer board open, replace | Fofão estância |
| LG | CM4340 | Does not turn on, completely inoperative | Open fuse, open thermistor and shorted 8n80l mosfet | Replace components. | NiloTech |
| LG | 50PB650B | LED blinking twice | Ysus board short | After replacing the broken c174, I found Q401, Q402, Q403, Q404, D556, DZ552, Q552 and Q554 short, the last two because they didn't have the same ones (SMK0460 - 600V, 4A), I replaced it with (7NM60N - 600V, 7A) and the TV started working again. | David jr. |
| LG | 42LD460 42LK450 | Power supply squeaking or buzzing | Zd503 shorted, 5v6 | Stiltec | |
| LG | 32LK450 | No image | T-con defect symptoms | A simple cleaning of the lvds flats and the t-con flats solved the problem | levy |
| LG | 42LB9RTA | LED changes red to green, no image, no lighting and no 12v and 24v voltage, pfc doesn't work. | R 314 or 313 open 820k | Hndrsn | |
| LG | 21FU6TL | Without synchronization lying down image | Changing the r512 value 22k it was measuring 23k after the change the tv worked | Electronic badri | badri eletronica |
| LG | 14SB1 MC059D | Vertical closed at the bottom and top, image trembling and with lines | C 309 220/35v | GDP2 | |
| LG | CM4320 | Turns on very insistently, or does not turn on at all, controls activating by themselves | Shorted panel switches | Replace all panel keys under warranty | |
| LG | 32LE7500 | The TV only lights up the LG logo on the front of the device and the buttons with no sound or image. | C201 and c202 burst on the power supply board, both 150uf/6.3v. | Replace for 220μF/16v. | Marcio Eletrônica |
| LG | 20LS1R | Dead TV when I pressed the power button, the green LED turned on and then the red LED flashed. | C202, c203, c204, c205 and c206 brazed and cold welded on t101. | Replace and run for the hug. | Marcio Eletrônica |