Bdrm tv loses signal

I've had this setup in the bedroom for over a year without much trouble. Now it freezes and pixelates, drops signal and gives me a black screen saying "check signal", then it will come back on and drop again after a couple minutes, or it might stay on for hours. It always happens during that daily update that is obviously worthless, it will stay off with same error message til I unplug the box. The living room TV does not seem to have any connection to this problem, it stays on as normal.
Rebooting box from account page doesn't ever work, and I have checked and reconnected every cable in the bedroom.
Right now, it is kicking off and coming back on its own every minute or so.
Very annoying when watching something, and with the money we pay every month this service should be stellar.