The television may require service, but first, let's try updating the TV. You can find the download for your model here:
http://tinyurl.com/yasyr5y (U.S. Model only!)
If the firmware update doesn't fix the television, then let's try to reset the unit.
Turn off the TV.
Unplug all of the HDMI conenctions.
Power on the TV, and hold down the EXIT button on the remote until a "RESET?" message appears. Choose YES and click ENTER.
Go through the setup again.
Power down the TV.
Reattach the HDMI cables except for the gaming system.
Power up and see if that fixes the other inputs.
If it does, power the TV down again and attach the Game Console.
Power on the Console, and the TV.
Check the input, and let me know if that clears it up.
My TV is only 18 months old (out of manufacturer warranty) and the other day I turned it on and watched TV for 30 minutes and left the room. Before leaving the room, the picture was fine. I came back into the room an hour later to find that the picture was nearly all white and the colors where very faint and inverted. I turned it off, unplugged it, made sure the HDMI connection was secure and turned it back on. The issue was not resolved. There is no gaming system attached to this TV.
Any thoughts or suggestions?