Huzzah!
On Saturday afternoon, I returned home to a PowerMac G5 (DP2.5GHz) that had apparently died while I was out. No power, no fans, no nothin'. The usual power manager reset and standard troubleshooting procedures yielded no luck.
On Sunday, I brought it to my local Apple store (glad I've got one 20 minutes away) for repair. Yesterday, they called today and said my machine was ready to be picked up, though I couldn't get it until today.
They had to replace:
-Power supply
-Main logic board
-Both processors
-Front panel board
Boy, whatever died inside, it took a few things with it (presuming they didn't just automatically replace it all anyway)! Glad it didn't also hose both my hard drives and my PCI cards and my video card. Memory modules so far seem OK and pass the extended memory tests.
If not for AppleCare, it would have been an $1800 repair!!! Actually, it would have been a new MacBook Pro, but none the less, at least it was free.
Anyway, just wanted to share my "$300 extended warranty pays for itself" story.