I leave it in standby mode so it turn on quickly and last night I started to hear a "click..... click" every minute or so. I looked at the TV, and sure enough, the little red standby light would go out, then "click.... click" and it came back on. I turned on the set and it did it's long boot up (no longer in standby) and by the time it was fully booted up and a channel appeared... "click.... click", it power cycled again. So, I unplugged it from the wall so I could go back to sleep. What a bummer. No guide data, and now an apparent power supply issue. Anyone seen this behavior?