Black Square Covers 80% of screen on most channels on TV

to me it sounds like you have the CC turned on.. Closed Caption setting..

turn off the close caption in the settings.

The sound processing section circuits ahs the fault. It is a skilled work. You have to downlaod the repair book to your Toshiba to get more details about the fault.

I removed the HDMI cable and connected with component video and rca audio. No more white screen.

Picture quality looks good. I don't know if it's as good as HDMI, but then I don't need to reboot the TV three times to get to teh on-demand menu... Grrrrr....

I am trying to contact Toshiba on this as well. I have seen several reports of this problem on the web.

1st, see if you can get another cable box that offers component as well as RCA outputs on the back. Does your cable box have S Video out and does your toshiba have S Video in? If so, hook up the S Video from cable box to Toshiba. Then hook up R&W audio from Cable Box out to Toshiba In. Set the channel on the cable box to what you want to record. Set Toshiba to record channel 3 or 4, whichever your Toshiba is set on. The cable box controls the channel you are recording. You cannot set the recorder to the channel you want to record. It must be either 3 or 4. Try it. If everything else fails, you have to go cable from wall to cable in on cable box, cable out on cable box to cable in on Toshiba then either cable or RCA out on Toshiba to TV.

try the closed caption adjustments. i had a tv that did the same thing and the captiong did it. turn caption off nd try.

turn off your closed caption this should work

that's a picture inside a picture option, and it sounds like the inside picture is set for a blank channel...just go to the menu, and shut off the picture in a picture option..should do the trick..

and keep the kids away from the machine

schmeky, sounds like your closed captioning is turned on, go into the menu and it will say "CC" or closed captions, and set it to off mode, end of problem, Happy Holidays.