Not sure how it happened, but it has.
I was thinking the heat may have played a part in it, but I guess there's no telling.
Any suggestions on where I can find a used or remanned replacement display assembly? Or is this something I can send out to be fixed, since the unit is still working fine?

Any suggestions on where I can find a used or remanned replacement display assembly? Or is this something I can send out to be fixed, since the unit is still working fine?