just to update, I unplugged the TV overnight and it returned to normal operation.
Is this a normal thing for a TV to do occasionally or should I put in a warranty claim for it?
In the past on my ln52b630 occasionally HDMI port 1 would go dead, but unplugging and replugging the cable fixed the problem. I always figured it was the dish network sat box that was at fault. But now HDMI port 1 went dead and it's staying dead--along with ports 2 and 4. Port 3 still functions normally. Even stranger, at one point in my troubleshooting when I cycled through my sources, the signal going into port 3 was appearing on both source 3 and source 4.
The dead ports say "no signal," but if I pull the HDMI plug it switches to "check signal cable." So the dead ports at least know that there is an HDMI cable hooked up.
I tried switching from firmware 11 back to 9 and back to 11 again but the problem persists. Is there any other reset I can try or do I need to call Samsung warranty to deal with this?