Here's a new one I haven't seen discussed here. Last night I was watching TV and all of a sudden the power on the TV shuts off. It turned on after a few seconds , I heard a little buzzing noise, and it turned itself off again. It went through this cycle a few more times and I shut it off completely.
I thought at first a fan was going bad and it was shutting off to prevent overheating. However, I tried switching to watching a DVD (I have the Harmony 880) and everything came up fine. Then I tried the Wii, no problems there, then I tried TV again and it started the same shut down cycle. So with that I unplugged the cable and turned it on again, this time it came up fine but couldn't find any cable source of course. I plugged the cable back in and it shutdown.
It was late at this point so I went to bed. When I woke up I tried everything again. Now the TV comes on and stays on, regular SD channels come through, HD PBS/CBS/NCB/ABC comes through, but the miscellaneous channels don't tune in. Let me back up here, I don't subscribe to digital cable I just pick everything HD up through the QAM tuner. The miscellaneous channels I mean are like the OnDemand channels somebody else is watching that I can see.
Getting those channels isn't such a big deal to me but I'm worried maybe my QAM tuner is crapping out or something else is going on. Anyone have this happen or heard of it happening?