tv turns on by itself and screen is off

i just got 4 tv's installed, 4 farenheit monitors, 2 in the visors and 2 in the headrests...all seem fine except for one thing. the drivers side headrest seems to turn on by itself every now and then and i'm afraid its going to happen when ileave the car and my car will be dead. the SAME tv is off center sometimes when you turn it on, but its only off center when the car is running, when i turn the car off and turn the tv on it works just like it should be, can anyone make any suggestions as to what went wrong or how it could be fixed?? or is it a factory problem?? thnks

i think it may be a bad monitorIf you say "I already know how", don't ask me a single question.

are you sure? because when the xbox is hooked up it shows fine, everything works good, the menu and everything....its only when there is no signal and the car is on it acts funny...do you think this extreme cold up here in canada could making the monitor act funny??