ANY firmware update failure deserves a call. GET YOUR TRANSACTION NUMBER and stick to your story. Firmware updates have bricked a few devices.
Background: I just installed a new antenna so I was checking settings. I tried to update the firmware over the internet, but it gave an error and failed (something like invalid server response, but it did not download or install anything).
I turned it off and unplugged it to rearrange the area. When I plugged it back in, it appeared to be dead. After a few seconds, it started sending sound to the receiver, still tuned to the channel it was on previously. But there's nothing on the screen, the power light stays off, the light does not flash when I press buttons on the remote (it worked earlier today, and works on another tv of the same model), and the front panel buttons don't work.
I'm trying to find a working network remote that I can use to see if it answers to that to help troubleshooting.
Any ideas of what else to do? Since it's tuning in to ATSC and relaying sound, I think the motherboard is fine.