I have the Scientific Atlantic 8300HD box with Cablevision. My TV is a Pioneer 5070 plasma. They are connected with an HDMI cable.
Here's my problem: Until recently, I watched SD channels in their original format with the black bars along the sides. That is the way I prefer it; I do not like the "stretched" look when upconverted. All of a sudden, in the past week, the 8300HD box has begun to upconvert SD channels. It's driving me crazy and I cannot figure out how to revert to the previous state that I enjoyed. Any help will be appreciated.