Turned on, pic and sound, changed channel, pic went 80% black still have sound

HI Bonnie,

If you have a good picture when it's on then it points to a dry joint on the circuit board, It is probably round the switching transformer section or the eht section but please be aware of the very high voltages stored in the capacitors and tube.

If you need any more help don't hesitate to contact me.

Regards
Barry

If you have not tried it: unplug the set and if using a cable or sat box unplug that as well---wait for a while and plug both back to see if a reboot of either cures the problem or not.

Sounds like the video board. How long have you had the set?
Is it a 19"?

Had the same issue sound but no picture, try wiggling the connections to the back of the tv, if that does not work try using a different hook-up, I ended going from the component jacks to the DVI hook-up and this took care of the problem, hope this helps!!

Yes, sorry. -Comcast tech

Could be the power supply gone bad.
No easy solution I'm afraid.

your bulb is connected to all the audio
the bulb blew out and you need to have it replace local cuircut city has a repair man on call for this

You are having a high voltage problem. Quite possibly in the horizontal deflection. I would check the horizontal output and regulator transistors.

when you say flickering??? are you saying the screen goes black and comes back on?? does the sound go out at the same time and comes bag on with the pic ? Is the sound there when this happens but is distorted. Is the pic blacked out or is it greying out with lines and twisting?? Need more info please as if its blacking out and the sound goes with it it may be going into shutdown. If the pic is getting kinda greyish with it twisting and the sound is there and ditorted then the tuner could be bad