Originally Posted by Wizziwig
I'm sensing there is some kind of image-retention and burn-in resistance lottery on thee panels. Maybe the result of contamination and impurities inside the vacuum chamber as discussed in the paper I linked a few pages back.
I found the article you linked absolutely fascinating. Sort of reminds me of a paint booth at an vehicle assembly plant. The cleanliness of the booth, equipment, nozzles, and HVAC are all paramount in keeping dust and other particles from landing on the car's body and affecting the finished product. We're still in relative infancy on large, mass-produced OLED displays, so who knows what other QC and fabrication issues are present that we're simply unaware of.
Here's my 65EG9600 with 2000 hours on the clock. This is the living room TV and gets completely abused by news channel banners, static images from paused TV shows and movies, and anything else bad for OLED that you could throw at it. Not a hint of IR or burn-in. I was shocked, because we were glued to both the 2016 presidential election coverage (over many months) as well as the NFL season which, of course, fills the bottom screen with scorecards for hours on end.
I share this because of your comment - that the lottery could also encompass burn-in resistance - in addition to backplane uniformity and the myriad of other things that we've seen as variances across different examples of the same models. My first foray into OLED was buying an open box unit that when viewed at home clearly displayed the demo mode letters "4K OLED" burned into the middle of the screen. It was quickly boxed up and returned for the one below.
The only thing I've done from the start with every OLED set I've owned is use color slides at full brightness/saturation/OLED light for the first 100 hours, turning the TV off every so often to let the comp cycles run. I did this out of force of habit with my old Kuros and ZT60. Whether or not it helped prevent burn-in is unknown, but it's at least a data point. It certainly has not helped the vignetting on my 65E6es, but that seems to be a different component of the panel lottery that color slides don't help remedy.
Regarding the UK owner who's been denied warranty service by LG, I would contact my credit card company and look into whatever consumer protection that card offers. Most channels have some sort of banner, station identification logo or other static image that is completely unavoidable and that LG has come to the conclusion that it's not their responsibility is absolutely insane. I'd also ring every social media bell in the tower to raise awareness of this, provided of course that the burn-in occurred within reasonable use of the set.