Re: LG 55LV5500-UA.AUSYLJR - Does not turn on, no sound, no picture



My TV, LG 3D 55LW5700 also had the same problem, no video, no backlight, red indicator was flashing (slowly)

Check the power supply:

1. Unplug P502 connector in the Main Board
2. Jumper SBY3.5V to PWR_ON, relay is clicked, there is 12 & 24 volt in P201. C256&C257 53 volt
3. Jumper SBY3.5V to DRV_ON, backlight is on, C256&C257 63 volt
4. Plug P502 connector back, turn on the tv, DRV_ON is not 3.5v (measured around 40mv), so the issue appears...