Re: Samsung LED TV Model UE40C5100QWXXU
Just so you know, these will be guesses. If it's possible in the UK, download the firmware to a USB and extract and then update that way. Sometimes there's a network problem. If it says that it's up to date already, then you're looking at some kind of hardware failure most likely. Which part would depend on a lot of things, not just what the image looks like on the screen. So the service suggestion is not unreasonable.