LG Repair Tips
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Results 77
| Make | Model | Ch: | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|---|
| LG | StudioWorks 55i | Red image | Welding cold on the video board | |||
| LG | StudioWorks 440si | Dead, blinking leds | Flyback | |||
| LG | 1470 | No picture after switching flyback. High voltage OK | Check C723, R742, R723 and Q711 | |||
| LG | 1470 | Dead. Green LED lights | Flyback | |||
| LG | 1470 | Dead. Flyback and three horiz output OK | Check R912 and R913 | |||
| LG | 1470 | Very large image | Check Q709 and D708 | |||
| LG | 1470 | Image is unstable after switching flyback | Reverse the wires that run flyback and go up to the power supply | |||
| Lg | CI29H40 PC8KA | There was a bright white screen with flyback lines on this set. The A1 adjustment had very little effect | I found that IC901 TDA6108JF on the tube base was faulty, pin 7 blue o/p and pin 8 green o/p both read s/c to ground. Note: this chip was probably taken out due to the tube flashing over as in my case | |||
| Lg | CZ-20E60 11.1 | Stuck in standby with no line drive | R410 o/c | |||
| Lg | CF-28A50T PC-58A | Flyback lines on pic | Check resistor R351 in front of TDA8350Q. It should be 3.6 K. I replaced with 3.8 K and it worked fine. Additionaly check: R708, FR704, FR359, Q351, Q345. If fault persists try replacing the TDA8350Q | |||
| LG | RP-14CB20A | Sem audio | R624 - 22K | |||
| LG | Various | Modifying R/C to access service modes | There is a service remote availiable but if you have a remote which uses an SAA3010T IC , simply connect a tact switch between pins 1 & 11 to access the service mode . | |||
| LG | LV710 | Wont tune - "SAFE" displayed | Sus EEPROM | |||
| LG | KE14U73 Combi | Swirling lines & static pops on pic | poor earthing of the deck to the screen large VCR screening can | |||
| LG | KE14U73 | St/by only | HT present but no 8v supply to IC500 jungle chip pin 37. D850 in psu leaky |