Use their concierge service.
I have a lg smart tv and have had it for around 3 months. Out of those three months it hasn’t been working for 2 months. The tv hasn’t been damage or hit but one day it decided to stop working. When the tv is plugged in and turned on it continuously turns on and off and is unusable. I have to unplug it for it to stop turning on and off. I often leave it unplugged and off and then try turning it on after a week or two and it then works for a couple of minutes sometimes close to an hour. I recently left it untouched for a month and it’s been works for a day now. What can be the problem? And what can I do to fix it? I was told to go to an authorized LG store for it to get fix but where I live it hard to get to one. What should I do.