We have a Sony 3000 DVR.  Periodically, I will have recordings that have audio but no video.  This will be the same if we turn the TV on AFTER a recording and try to watch that channel while having the TV on "Receiver".Changing the channel will result in a "refresh" of audio.  What could be the problem?  Is it the tuner in the DVR failing?
Thank you
Carol
					Thank you
Carol

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