I have a Tivo Series 2. I noticed about a month ago that my tivo is outputing my cable channels with a black bar on the left side of the sceen, there is a 1/2 in thick black bar running along the side of the screen. My screen is a HD Panasonic plasma and the Tivo is connected to my receiver which sends all my video inputs to the TV. The Tivo menu is displayed without the black bar and one channel, 96 which is a closed circuit monitoring of my condo building is fully displayed. Is this a problem with the Tivo Tuner? I've changed the settings on the Tivo from 4:3 and 16:9 aspect ratio and the black bar is still displayed. In addition to Tivo I have OTA HD and a HD Digital Cable DVR hooked up in my system.