Is this possible or do I likely have another problem? Was watching OTA HD last night on my 42TX500U. Heard a sound similar to losing satellite signal, screen went blank, but the operational light was still on. Unit was not responsive to the remote. Manually turned it off, waited 10 seconds, turned it on. Got a pure green screen, unit didn't respond to the remote. Unplugged it for a solid minute, runed it on. got the first time set-up screen, re-scanned, then everything was fine (didn't have to set-up language, TV Guide or anything else). But, it didn't set-up the channel I was watching when the problem started. Re-scanned 10 minutes later and that station still wasn't available. 30 minutes later it was available. Curious if anyone else had a similar experience or opinions.