[X4U] Need Power supply for Dual G4

[Kansas Territory]

Wondering if anyone has any suggestions..
My workhorse.. Dual G4 (mirror door?)  after a brief power outage the  
other night,  try to start it up..  NOTHING happens..  nothing at  
all, nothing turns on.
I've tried changing outlets, surge protectors, and power cord..   
still nothing happens.

My first thought is maybe the power supply ?
Haven't changed out a Mac power supply since the Mac II series..

Tried looking for a replacement power supply, most places I've looked  
online list it as OUT of STOCK.    Not to mention expensive..

Anyone have any good suggestions for Mac replacement parts, or if it  
could be something else other than power supply ?

Kansast