Re: LG 42LD560 No Picture No Backlight No Sound Pulsing LED

Hi,

Did you managed to diagnose the fault yet?
I have the same problem and I have gone as far as, see below:

I examine the voltage output 12V, 20V on standby when the red LED flashes the voltage is at max, but when turn on, both voltages drop to zero.
Those voltages are coming out of T501.
There are two Opto couples IC502 and IC503 managing the voltage protection feedback, in case of any abnormality they will shutdown the oscillator and transformer will stop working.
I'll...