Lg Repair Tips
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Results: 4875
Results: 4875
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| LG |
29FS4RL-1
CW62A |
Secondary power supply with 50v. pulsing arms the relay. r 801 27 k in front of the str | Changed the r 801 back to normal | Grateful fig | sandes |
| LG |
CM4450
|
I'm sound | The 35v power supply for the audio output is missing | Q901 (fet 8n80) in the power supply primary, and the photocoupler pc903 that monitors this voltage. | Baguatech |
| LG |
50PB650B
|
TV without image. Symptom y-sus board, z-sus and signal board inoperative | TV with the y-sus and z-sus cards inoperative. the signal board or tcom is supplied with 3v3 on the ic 453, but it is inoperative “the d401 led does not blink” defect found on the y-sus board: c205 smd under the r201de 2r2 near the yellow chopper transformer “it is under the glue silicon” it has a short circuit, causing the dc/dc power supply to not generate +22v. which powers the 205 smd as7818 ic which regulates the +18 volts. the voltage at the IC was around 7v. the value of the capacitor is 1k5pf /1kv. | Place a normal blue 1k5pf /1kv capacitor in position c205. | aldin |
| LG |
47SL90QD EAY58470001
|
Dead power supply | Check and replace d201 and d202 | Rui | |
| LG |
50PK550
|
Does not light blacklite | Capacitor plate on the left 150mf/35v has little capacitance and is a little bloated | I put 200mf/50v it was perfect | Alextecnico |
| LG |
CJ87
|
Beeping from speakers when calling | X600 with oxidation | Replace the x600 for another 24.576mhz, the same or if it is not SMD, solder terminals 1 and 3. | EduSSantoz |
| LG |
42LK450
|
No image appears | Capacitor c402 next to the inverter transformers with leakage value 54j | reginaldo moronte,eletronica junior caldas novas | |
| LG |
42LY340
|
Flashing backlight | Bad power supply | I replaced the power supply board | Adrian Chapadão do Céu Goiás |
| LG |
42LH20R
|
Does not light up the screen; only sound | Check power supply resistors 610, 611, 612 and 613 (all 680k), if any of them are altered, the ccfl lamps on the panel light up and after a few seconds go out. | wander | |
| LG |
32LV5500
|
Normal image, hissing sound | Defective x101 (close to the processor) | X101 crystal replacement | FILIPE FURTADO |
| LG |
32LN5400
|
Does not turn on or does not turn on | Cold solder on the power supply board | Solve all the plate | Tulio UBA |
| LG |
42LV3700
LB12B, LJ12B, LT12B |
TV doesn't show video, but turns on, inverting doesn't work | C402 shorted but check the other capacitors on the same power line. | FLIPFLOP | |
| LG |
26LH2000
|
Does not turn on and has no stand-by | Check replace r501(2r2), ic500(ice3b0365j), zd501(3v6), zd502 (24v) | MStronica | |
| LG |
14CB20
|
After about half an hour or so the tv turns off on its own. | Diode d501 (1ss133) with problem ( | Replace the diode. If you don't have a 1ss133, you can use a 1n4148. | Tiago C. Neves |
| LG |
FA 162
|
League without sound | Str x 6757 or 6759 | ecb alves | |
| LG |
CM4330
CM4330 |
Went into protection when increasing the volume | Aclopador pc902 | Resolved a hug | dinetronic |
| LG |
39LN5400
|
Flashing standby and won't turn on | Resolder the entire power supply board | And I'm happy | renildo |
| LG |
42PW350
|
Turns on and off and returns to stand by | 2 capacitors of 3300 mf/10v on the 5 volt line practically exhausted. the impression was that tsound was a defect on the y sus board. when it was isolated from the z sus board the TV turned on normally. paca y sus tsound was no short. what was left was the power supply board. the relay tripped because the 5 volt power supply was not supported. | Changing the 3300 mf/10v capacitors and checking the power supply capacitors. tsound were several with low capacitance and high esr. after that the tv started working normally again | jose carlos |
| LG |
42LD460
|
Turns on, hangs on the logo and gets the screen all "scrambled". | Check the "air" resistor banks that are close to the bga....all 10r resistors...good luck.. | <small> |
|
| LG |
50PQ30R
|
It doesn't work, plugs it in, you hear the relay arming and tsound's no image. | After checking the ysus board, I found transistors q22, q23 shorted and fuse fs 202 open. | Replace damaged components, general board check. | arock |