All of my HD channels are showing in SD. I've changed the format to make sure it is set to normal but they all look like SD, they do not fill the screen. Any ideas?
Did you go to Menu+6+8 and set the TV type (by accident) to 480 instead of 1080 or 720, as appropriate.
It may come that way originally. Yes, make sure your top banner says HD on satellite HD channels.