you can always do a `show-post-results`

however, i see power supplies die constantly (in a datacenter of over several thousands pieces of equipment). Because the type of server it is, sun may not fully support all spare parts. However, give them a call. If you have a service contract with them, i would call them up and they will want an explorer sent to them. If not, grab the part number. its usually a XXX-XXXX number. something like 300-1358. Buy one and replace.