TV goes from fuzzy screen to normal rapidly - DirecTV

Yesterday, my TV screen started to go on fuzzy, then revert to regular screen and it's been doing it today again. It appears that it can still record a football game, but I can't view anything for more than a second. I've checked all the connections. Yesterday, I couldn't get either of 2 remote controls to move from spot 1, so I know they don't both need batteries. I'm mystified, can anyone help?

This question, "TV goes from fuzzy screen to normal rapidly," is about DirecTV channels, programming, equipment, and sports.