I’ve been having this problem with DirecTV since I had the service installed.
On the HD channel I will experience periodic drops to black and pixelation from time to time.
I’ve heard that it has something to do with the way DirecTV converts the signal to broadcast out over their network.
After many calls to DirecTV I still have not received answer and since the problem is sporadic.

Is anyone else having this problem in the LA Area or elsewhere.