I first tried to hook up the Xbox to my Panny 53WX42 by composite cables in Input 1, 2, 3, and 4. I received sound but no picture! I then went out and bought the advanced AV pack and tried to hook the Xbox up with component cables intot the component 1 and 2 inputs of the TV. Still, sound but no picture! Tried the Xbox on two standard TV's and it works fine! Called Xbox, they don't have any solutions. Called Panasonic, they're sending out a tech. Is it me? Is it the Xbox? Or is it the TV?