sony 37" TV KDL-37M3000 problem - HDMI input 1 turns TV image scratchy, then seems to reconnect, display says HDMI 1. It keeps interrupting the show we watch. Changed input to HDMI 2 and it lasts much longer until it scratches out for a couple seconds. Any ideas? When input is changed to S-video input is fine. Just bought the TV used. I'm concerned I've bought a lemon.