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 | 29K30 MC-022 | TV turned on with retraction lines and turned off I found the capacitor on the 220v line swollen in the rear, it's the others on the line didn't solve it | Tda6107jf | Tda6107jf | ELETRÔNICA MUNIZ |
| LG | 26LG30R | Turns on, with audio, screen lit brightly and without characters. changes channels but no image. | Tcom without power supply. | Replace double mosfet si4925bdy behind the tcom jack. | BICHARA |
| LG | LG26LG30R | Does not turn on, red LED flashes blue twice | Supply missing 12volts and 24 volts low | Replace transistor stn 2222 (replacement bc 639. invert the cbe and ebc terminals) | BICHARA |
| LG | CM4330 EAX64991501 | Sometimes it turns on, sometimes it doesn't. | 6v2 zener diode, position zd902 and 6.8nano polyester capacitor position c908, changed. | Swap 6v2 for 8v2/1w and 6.8nano for 10n/50v and that's it... | LUCIANO ALQUEJA |
| LG | 42LG50D | Doesn't start | Fet q601 with leak, fb601 open, tv already turned on, but pfc wouldn't bend, ci u601 defective. | Replace these parts and the TV was ok | Maurilio |
| LG | 21FU4RL | Power supply low TV does not oscillate secondary 85v | R844 of 4k7 measuring 6k2 | Replace 844 4k7 | JUNIOR |
| LG | MCT704 | So no standby (relogio), sem audio | It only arrived on standby, it was a CD2 touch key, then it turned on normally but tsound was no audio | I tried everything to solve the audio problem but without success, tsound was no =65v or -65v for sound output, the only solution was to place a 33k resistor between pins 3 and 4 of the pc901 photocoupler and another on the pc902, the voltages returned +65v and -65v and sound working normally, it was the only way... | Gleyton |
| LG | 42PJ350 PD01A | It turns on and then goes back to standby and doesn't turn on again until you unplug it. | It was verified that q605 did not release 12v for the doubler and the ic l6599. photo 103, responsible for switching this transistor, was changed. | joaomvjr | |
| LG | 29FU6TL | Change channels, adjust the volume, but with the screen completely dark. normal scrim voltage. Acting on the screw potentiometer quickly, a slight glow appears and goes out. with the normal vertical (open). | Vertical ci defective ic301 (stv9326 ) and open fr401 0.05 homs. | Ademir tc | |
| LG | CM-8350 | No audio | Fotoacoplador pc902 | Replace the same | riva ferrari |
| LG | 29 FX5CL-LG | Does not turn on the off LED, it just breaks the relays | It was the 180k r830 that was open | The TV turns on but turns off immediately afterwards tsound was another resistor open, the r843,220k open, replace both | Rafael |
| LG | 32PC5RV | Power supply relay knocking, no voltage vs and goes without 5v, it also applies when it works and keeps turning off for no apparent reason ok | R122 r123 r124 1004 or 1mg remove clean glue replace, check voltage with digital multimeter on each one, tsound should be 90v on each one as it is a divider | Luiz Técnico | |
| LG | RP21FE85G | No image only sound | C512 | I replaced and ran to another one | Antonio Carlos (Eletrônica Renascer) |
| LG | 42LB5500 | TV had sound, had black light, but dark image, main board and power supply, t-com good. | Display board with shorted capacitor, c103 | Turn off one of the flets to find out which side has the problem. whichever side is bad, has half of the screen white. and just replace the 10 midro caspacitor | ELETRONICA MOISES |
| LG | 32LD350-UA LA04A | Turns off after some time. After the first shutdown, this repeats more quickly and then never stops turning on again. keeps turning on and off. | Zd503 diode (zener 15v) leaky/altered. only detectable at x10k scale. Measure to see if possible changes in the zd504 (15v zener, very close to the zd503) and ic 502 photo coupler. | Replace and you're done. | Eletrônica R-Tec |
| LG | 29FX5CL CW62A | Closing on the sides | Resistor r319 of 39k measuring 53k | 3R | |
| LG | 42PQ30R | Sometimes the relay doesn't even turn on the LED | D352 shorted diode. | ||
| LG | RAD 136 | No sound comes out | Tsound is no voltage at the output | Zener 905 uz 20sb(20volts), close to the rectifier bridge | eletronica fernandes - to |
| LG | 42PJ350 | The image is drizzly and dark and only appears a little at the top. | R729.2r2 and capacitor c765 1k x2kv and I guided by the words of friends sound. | Replacing them. open resistor and cap. blown on the y plate. | @gepe (agripino sousa) Pá |
| LG | 42PJ350 | TV would hit the relay and go into protection. stand by access but did not accept the power on command. and none of the 5v voltages appeared on connector p813 | Transistors q801, 802 and the driver l6599d fuse f801. | Replacing them. | @gepe (agripino sousa) Pá |