Our server went on the fritz over the weekend.
It started re-booting without any 'blue' screen and never remained up for but a few minutes.
We eventually unplugged it and the next day for our service rep, it would not start at all.
Seemed like both power supplies died. We replaced them.
Now, still no power. No clues as to problem or if we can find a way to diagnose real problem.
Can not see any fried components on the board.
In the meantime our rep may see if we can get a drop in replacement.