I Have The Service Manual For The Sony Kv20ts20. I'm Really Trying To Fix This Television. When I'm Watching T.v, I Get A Clear Picture, But The Color Is Bad. It Has Color, But There Is This Big Green Circle In The Middle. Even When I Put This In Black And White. I Can Still See This Circle, But Not As Much As When I Put It In Color. Is This A Known Symtom? Does Anyone Know The Problem Or Have Any Trouble Shooting Tips?