I just got my first DMD (Doctor Who, awesome game!), and in looking at parts for it, I've seen quite a number of posts for DMDs for sale that claim the display is starting to "Degas".
I understand how an Alpha-Numeric display can outgas, but that's different tech. In my mid, DMDs are just made of LEDs, and shouldn't suffer from this problem.
So what is it? Am I mistaken about the architecture of DMD displays, or are these people just ignorant of what failures are actually occurring in their displays?
Also, how does Burn-in occur on these displays? I've seen pics of DMD displays with burn in, and I guess I don't understand how LEDs would do that.