Surely in 2012 these boards are fine. The boards appear to be well made, and technology has moved on from the older days.
Warranty is 6 months on boards ofcourse, and with them running in some locations hot, 24 hrs a day, 7 days a week, surely a issue would show up pretty quickly. The other thing is that I have never heard on this forum ever, of anyone having a bad Stern board.
Beaky(Andy) has been repairing boards from every different pinball machine and has had hundreds of boards through his workshop and I have never seen a Stern board for a late model Stern go through there once. If these boards are better than boards from a few years ago, surely they have been designed to last.
I will ask AMD for a cost $ to replace each board (there are only 2), if a board had to be replaced, so to speak (ignoring warranty) and I will report back the actual costs.