The burn in is not from the loop but from a menu generated by the tv that runs vertically on the left side of the screen. It is left on all the time with the sets in torch mode about 8 to 10 hours a day, 7 days a week. I will post a pic of the menu when I get back but not of the burn in as I was not able to get a good picture of that. No question it is a concern although it is faint and something I did not see while watching the loop of a Blu ray, just on a white screen. More next week.
Thanks for the report. Not being able to get a pic of the burn in makes it sound like it is really faint. Is that your impression when there? Also, I understand they have a few models there. Is it visible on all of them? I believe they had one in a window display so it would have been on 24x7. Not that it should have burn in yet regardless.
I agree burn in is likely the major issue with the WRGB technology. The obvious solution is increasing lifetime of the materials. There are also compensation technologies being developed such as this from Ignis Innovation. The yellow (red/green) material being used has a lifetime of 85,000 hours to 95% brightness where it might be a minor issue and 1,450,000 hours to 50% brightness so this sort of compensation could mitigate minor burn in issues for a long time.