I recently hooked up my new 42" panasonic plasma tv. The picture is awesome however I quickly noticed that when the entire screen picture is black then I can see horizontal lines on the screen. However if I switch to different signals to which no device is connected then the lines go away. Which leads me to believe that my tv is fine but that my DVD player is causing the problems. I am using a brand new Denon 2900 with the best monster component video cable. I also have all the power running through a monster power center. Has anyone else had this problem, how do I diagnose it?