Does the on screen menu work?
Did you unplug it and try again after waiting about 5 minutes?
And what model is it? Just a few weeks ago my wife's sister had a failed XBR and as they were moving we all agreed it was time for this 325 pounder to be changed out.
We own a Sony Bravia 40" HD TV? Last night, in the middle of a show, our TV lost all video, but the audio remained. This is the first problem we've ever had with it. It is out of warranty (seven years old) and has performed very well up to now. Any idea what went wrong? Your help would be appreciated. Thanks!