I have my Sony LCD hooked up to a Comcast HD box but there's black bars on top and bottom of the screen when in HD, only way to get rid of them is when I go to Zoom. My buddy has the exact same TV but his picture takes up the entire screen when his picture mode is on 'Full'. Mine leaves 3-4 inches of space. Also his picture looks slightly better. He has the same connections as I do. Anyone have any suggestions?
All standard definition channels have black or grey boxes on sides. The only way you can get rid of them is by streching the image, which is usually a feature with the tv or cable box.