I have an old standard def tv from 2004... I guess it might be strecthing the shows by default with no way to change it... Most shows are okay, but some..like comedy central jon stewart, are showingup with cut off edges. I tried changing to 4/3, 16/9, and smart...but it was the same. the only way I could see all the sides was to go to 16/9 mode and then go to panel mode...which made it a long squishy up down box. In other words, was not letter boxing it. I imagine my tv will not work right with it and is the problem, but if you have any clues I would appreciate it... (can't afford a new tv after throwing down huge bucks on this...lol) edit: the cut off on some of these channels are very small sides of the program..but just enough.