Originally Posted by wxman
Do you have anything connected to HDMI 1? If you do and it's not a stb, try this. You should generally try and have something connected to HDMI 1 as your first choice. And if it's not a stb, then follow instructions. ftp://andthatsjazz.org/pub/avshd709/RemoveSTB
HDMI 1 is my AT&T STB. I have run through setup multiple times (both after resets, and without resetting, through Menu -> System -> SETUP; as well as running through Smart Features -> On TV Settings -> On TV Setup). Channel Source is set to Set-top box; Source is set to HDMI1 (STB):AT&T.
When I turn on the TV, it defaults to the HDMI 1 input and the AT&T box (after turning Smart Features -> On TV Settings -> Auto Start = Off to disable the Smart Hub from booting). After 4 minutes and 22 seconds, the input changes source to "TV", as though I had a coax cable connected. This ALWAYS happens, since updating to firmware 1207. If I turn on the TV, and 2 minutes later change to HDMI 2 or 4, then 2 minutes and 22 seconds later the TV changes the input to "TV". I had assumed this was a more common issue; I use a wired connection to update the TV, so the update file should not have been corrupted.
--> I removed the STB per your instructions, and with no STB installed on HDMI 1 cycled the TV. After 4:22, the "TV" input came up again. But, at least I was able to re-install my AV Receiver; for some reason Setup is skipping that step. After re-installing the STB, 4:22 later... I've gone through all the settings 3+ times, and am at a loss. If anyone has any ideas, please help.
Edit - I am using the Smart Touch remote that came with the TV, as well as the regular remote which took 3 months of bugging Samsung in order to get. Per Samsung, I have tried removing the batteries of first one, then the other, then both just for the hell of it. The issue still occurs, so it is not one of the remotes sending an unwanted signal.
Unplugged Television for 10 minutes; no go.
Unplugged HDMI 2,3,4; no go.