I don't see the connection with the state of the TV that should/would affect the DVR other than no user input to the DVR after a extended period of time?
Have you tried connecting some other set to that and see if the same thing happens?
How many hours are we talking about?
Free, abundant OTA television separates this country from many others. ATSC1 has only been in force since 2009. The wireless industry has enough spectrum. Enough of 'planned obsolesce'.