I have a ps3 i. i have a ps3 i had it hooked up to a 46" samsung 1080p, then i drove 2

Question

i have a ps3 i had it hooked up to a 46" samsung 1080p, then i drove 2 miles with ps3 in box and hooked up to a mitsubishi 1080i 52" tv and i could only see part of the ps3 screen either in game or on just on ps3 main screen menu... when i tried to use just the regular av cables that come with the system i couldnt get anything... please help me..... contact me @ [e-mail] subject ps3 help.... thanx