Why is there no picture on your westinghouse lcd tv?

Does it even turn on? Is it the projection lamp type or a flat panel LCD set? If it's the projection type, you may have a lamp that's finally gone out or a bad ballast unit.

The other things that can cause no picture is if you have the wrong input selected on your set via the remote control by which, the TV is looking at an input where's there no signal present. Most TV's though, should display something though, such as, input 1', input 2', etc.