Lg Repair Tips
Search: lg
Results: 4875
Results: 4875
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| LG |
CP 20 K 40
|
Irregular operation, power supply sometimes does not start | Capacitor c 825 (100 u f x 35v) with loss of capacitance or high esr | ||
| LG |
CP 20 A 70
|
Inoperative, shorted horizontal output transistor | Capacitor c 407 (1 u f x 160 v) with loss of capacitance or high esr | ||
| LG |
CP 15Q90A
|
Inoperative, LED blinking | Horizontal output transformer | ||
| LG |
29C85
|
Poor focus | Horizontal output transformer (fly back) faulty | ||
| LG |
20B84H
|
Does not tune the channels | Resistor r 13 (4.7 k) open | ||
| LG |
14B86BR
|
Power supply turns on and off | C-813 shorted | ||
| LG |
14B84H
|
Dead | Resistor r 802 (2 k) open | ||
| LG |
1470
|
Pad width and adjustment controls inoperative | Transistor q 709 leaking or shorted | ||
| LG |
STUDIOWORKS 55I
|
Red image | Cold solder on the video board | ||
| LG |
STUDIOWORKS 440SI
|
Inoperative, LEDs flashing | Flyback | ||
| LG |
1470
|
No image after flyback change. high voltage ok | Check c723, r742, r723 and q711 | ||
| LG |
1470
|
Inoperative. green LED lights up | Flyback | ||
| LG |
1470
|
Inoperative. flyback and tr horiz output ok | Check r912 and r913 | ||
| LG |
1470
|
Image too wide | Check q709 and d708 | ||
| LG |
1470
|
Unstable image after flyback change | Reverse the wires that run from the flyback to the power supply |