I know this a is a pretty old thread, so hopefully the bump is ok, but having recently used LG's service for a random bright spot appearing
https://forums.overclockers.co.uk/showthread.php?t=18746260
The service was mostly fine. LG replaced the panel (or at least that's what I think is written on the service sheet, hard to read the handwriting), but the bright spot is gone.
It did have to go in twice, as the first time it came back with no fault, but to be fair, the bright spot can be akward to see depending on colour. After it went back a second time, with more specific instructions on how to check/see it clearly, it came back repaired with no issue.
The only real issue I had was the telephone helpdesk. The email helpdesk is great, very helpful.
The telephone helpdesk, useless. Supposed to phone you after filling in the service form on the website, they didn't, I had to phone them to move it along.
More often than not, you can't speak to anyone. Other than the 1st time I phoned, every time after that, it was the overflow desk, who will say lg will phone you back within 48 hours. Which would be fine, except they either don't bother, hang up or phone at a time when you are likely to be at work/unavailable. Even after apparently having a note made to phone after X time.
In the end I gave up and phoned resolutions, got through straight away and they were very helpful both times.
It took about 2 weeks both times it went away, which is what LG say (10 working days).
So other than the telephone helpdesk being useless, it was fine for me.
So that would be my advice, if you get the overflow desk, you will just get caught in a never ending game of having to phone back, so just phone resolutions instead as you can actually speak to someone & they are helpful.
So fare i have absolutely loved LG ultrawides and its going to be interesting to see if the um68 has any room for overclocking above 75hz. So excited.