It’s very common for led backlights to fail these days and although it’s certainly possible to repair them, it isn’t always easy as it involves almost complete dismantling of the tv and removal of the screen. That’s fine on smaller tv’s, even up to 50″ is manageable but above that the screens become very flexible and easily damaged, in some cased they are glued and taped onto their plastic support frame, making it even harder to safely remove them, that can sometimes also apply to smaller screens. So although all care is taken during removal and refitting of the screens, accidental damage can sometimes happen, for this reason I ask all customers to sign a disclaimer before the work is done.