I have a ctx ezpro 610 projector and I am getting really agravated by what you might call interference. Basically while I am watching a movie or whatnot I am getting a constant rolling bar sequence through the picture. Its not a heavy black bar or anything but rather like a scrolling darker contrast bar running from top to bottom. Im using a fairly high quality shielded s-video cable so im thinking it might be originating from the power source. I am simply connected from the wall directly to the projector.

Any ideas on how to correct would be greatly appreciated