I am having probles with my tv's turning off by themselves. It started with a tv that I've had for 20 years. It would turn off by itself, but could turn it back on, then it happened more frequently and not stay on at all. Thought the tv just had had it. Then put a different tv there, it worked for several weeks then started to do the same thing, put another tv there the same thing happened. Thought it was the cable box. Now it is happening to a another tv,in a completely different room, ,and not hooked up to the cable box , but it is hooked up to a cable line. I still have 4 tv's in other rooms that is not doing this, (not yet anyway). Could it possibly have anything to do with the wireless hookup I have in my house? Or could it be some type of power surge. I have recently had a hookup on my electric, from the electric company, that cuts back on my air conditioning when there is high usage. Could this be causing something? Although, this all started in the winter.