Bought a long (10m) S-Video cable to attach to my GPU to my TV and a 'y' audio cable for soundcard - PC. Both of these plug into a SCART adapter at the TV. The problem is, i'm getting terrible picture quality, with flickering and rough 'edges' on everything, if I change the mode to B&W the picture quality is perfect. I used to use a much shorter composite video cable which had no problems. Any help on how to sort this much appreciated.