I did the same thing. I reset the system in the service menu by pressing 7 + 9, then enter. Is there some way to get the functions back? I can't get it to change to 4:3, zoom, or anything like that. It only shows 1080i. I have it plugged into my PC, so it still runs, but I would like to get it back the way it was. 16:9 Enhanced and Screen Mode are greyed out in all inputs. Any ideas?