I pressed format 5-6 times and I still don't have a picture. The screen is black with a small rectangular box that says invalid format. I typically don't use the direct tv remote because I have a logitech universal remote. I paid best buy to install this. I can change the channels and get the sound for that channel I just can't get a picture. Where is the model number? The TV is mounted to the wall so the back isn't real accessible and I have no way to take it off the wall. Thank you.
I am not at home right now. I can't get the TV off the wall to do anything so I don't know how I would change the cables and with the receiver and DVD player hooked up to and really don't what to hook and unhook. I don't know what composite cables are. Sorrry I don't understand this type of thing.