Thank you TheMG. Yes I am pretty sure its led backlit full array display.
I will definitely take it apart when I pick it up. Someone sent me the photo and I was trying to figure out if its a panel issue or as you say like burn mark on diffusers. I just noticed though, uf you look at picture along bottom row where it shows the active icon, there is a "^" right in the middle of a dark spot but it seem brightly lit up. I would have expected it to be blemished by the burn mark underneath but looks normal. Hmmm thanks again for your input.