Bummer: The issue persists. Back to strange data regarding storage space used, most of the time showing 0 of however many GBs utilized. Also, the slow to respond to remote commands is a bother as the set warms up. Otherwise, it continues to perform...so I guess I'll just use the set until it fails.
Then I might take a look at the possibility of the wiring harness coming loose and putting tension on component connectors--a problem with this model in the early going--before concluding I've got a bad main board, power source...or both.