My tv set displays a Horizontal Band which starts from the bottom of the set, and then rises slowly to the top. It only happens when I am viewing my sat, not when I switch over to my landline cable feed. The band is about 3 inches wide, is faint, but is very annoying. I have tried moving my HT speakers, various other componets, vcr etc..etc.. with no success. We do have a computer in the area, but it's located about 10 feet away. No cordless phones around, it's located upstairs. Any idea's of what else to look for which might be causing this interference? Thanks.