Thanks Tom, didn't know Sammy doesn't use blink codes. That's a bit odd IMO lol.
Not being able to power it on without unplugging it isn't normal behavior though. buggs, have you tried turning it on with the little joystick in the back? Do you have the same issue having to unplug it to turn it on if you press the joystick instead of using the remote? If the joystick works, maybe you need to pair the remote to the TV again or check for other interference with bluetooth such as many bluetooth receivers. However, if the pressing in the joystick leaves you with the same issue having to unplug the TV, then you may as well just exchange it for another F8500.