Image but no sound. Tv clicks but EVDD voltage doesnt stay on.

When I turn on the tv i hear the relay click and there is sound but no display. I looked at the voltages and everything seems fine (I would need the service manual to be sure) except the EVDD which is about 20vdc when the relay clicks but goes down to zero immediately.

Also, while the relay clicks there is a thin vertical red line for a moment at the center of the screen.

**already replaced tcon, mainboard and power supply, i'm out of ideas…