Scenerio 1: Installed CFW on PS3. Used HDMI for video. Moved PS3 downstairs to the kid's TV (27" standard-def). Picture doesn't show. Sound works. Take it back upstairs to hi-def big screen. Change the output to standard-def AV. Put it back downstairs and all is good. The kids love it. Scenerio 2: Installed CFW on another PS3 for out-of-state nephew. I used HDMI for video. Mailed him the PS3. He gets no picture on his standard-def TV. How can the resolution be reset without using the first scenario?