How do you turn off the gray bar on Dish Network?

You can also control your TV screen through your TV settings and the receiver if you have an HD receiver. With the HD receiver, press the Menu button on the remote to bring up the Main Menu on your TV. Press 1 (System Setup) and 8 (HD TV Setup). For the TV Type, select the resolution your TV can handle (720i - 1080i); Select 16:9 for the Aspect Ratio; then press Done. Cancel all other screens till you are back to your TV picture.

Some programs are not broadcast in 720 or 1080 format so the TV and receiver will adjust for this giving black bars on the sides or top and bottom.

Press the star (*) key till its back to normal