While veiwing pictures on a disk, I was attepting to adjust the size/format in which the pictures were being displayed when I hit a button that "disconnected" my Toshiba flat screen from my Toshiba DVD player. The message I get on the screen is "no video source" when switching to HDMI2....no wires were tampered with, so not sure why the disconnect. Do I have to find compatibility codes to get these two devices together, or is it something I can do on the remote? HELP!