Intermittent black screen with no sound - DirecTV

The tv connected to the main receiver has been randomly going black with no sound for a second or two (sometimes every couple seconds, sometimes every few minutes). There's no error code and changing channels doesn't make a difference. I've tried wiggling all of the cables/plugs, but nothing seems to help. What is causing this problem?

This question, "Intermittent black screen with no sound," is about DirecTV channels, programming, equipment, and sports.

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