Right now I have a single composite wire going from my surround sound system to the TV (using the video source VID1), I want to replace it with component. But when I do that, and I put the TVs video source to CMP1, the screen remains blank. My satelite receiver does not have component, so it uses composite (white, yellow, red) to go from the satelite receiver to the sound system receiver. I checked the sound systems' manual, and it doesn't seem to have a setting telling it what I'm using.