Recordings of The Musketeers have random blank screens, but the sound is unaffected.

I record The Musketeers on the DirecTV DVR from KRLD (channel 13) in DFW. During playback, there are many random times from 1 to 10 seconds that the picture goes black. The sound is not affected. The problem has occurred on every week for the last 2 months.

This problem has not occur on any of the dozens of shows we record on all other channels.