tv randomly goes blank
So a couple of times an hour the tv will go blank and the audio will stop, for 1-5 seconds before kicking back in. The issue is not related to switching between channels, as it can happen many times well after a channel is changed. This happens on any and all chanels and with on demand content as well. We really only watch HD tv, and it is connected to my tv hdmi through our receiver. We moved homes but have the same cable box, receiver, etc. So we do not know what is going on or how to get it to stop?