We have a problem that has been going on since last year.. the hopper will shut down the tv . The screen goes black and the tv goes off. We have changed a few things and even got a new box about a week ago.. and it is still doing it. When the power button is hit the the hopper comes back and then may go back out right away.. it was one channel and now it is random any where. I had a timer set to tape a series and it started to tape and then it went out. any ideas ? Thank you.