Toshiba 50HP66 Plasma TV

has the television ever worked before?
when did it last work?
have there been any changes to your setup since it last worked?

It sounds like the video output isn't
working its most likely a component
failure 1 thing you could try is connecting
a rca cables from video/audio out on the set to
another set vid/audio inputs to see if it the video gets
through.This is a problem that requires technical
knowledge and test equipment to trace the video
signeal

my tv has no picture has sound

I agree.

Change the Scaler PCB CEF156A

Check the fuses on the ysus & zsus boards. Are any fuses on boards open . Disconect power cabels to ysus board first {board on left} . put tv on . if the light is green the ysus board must be replaced.

There's a possibility of the screen not getting enough voltage from the power supply so u should get tha voltage to the lcd cheked .votage has to be enough to run sound and video

wish u the best .

hi the best thing to do is call toshiba and let them know your problem

I would suggest to read what other members have reported by clicking here.
Good Luck.

That problem is caused by the Y Sustainer board.