Just had mine in for the second time, first time I took it in they said that the diagnostics showed everything to be ok, so they would like it in again for a few days so they could witness the issue. So took it and left it with them, got a call to collect today and they said half the screen was not working so we will need to order a replacement. Half the screen, when I tried to clear a light frost from it nothing melted at all.
I also think the guy who is delivering the screen is also fitting it, I think they use a third party for screens!