PM 6100/60, was: Powermac G5 won't start

On 30 Jun 2012 at 9:51, Mark Benson wrote: Is something supposed to happen if I do that? I must have performed that at least half a dozen times and the system just boots to "Welcome to Macintosh" each time without any acknowledgement that I had any keys pressed. I also left the PRAM battery out of its socket overnight as a preliminary measure. Okay, so if it's a capacitor, is it likely to be one of the SMT cans or one of the rectangular SMT tantalums? What area of the board (quadrant) is most likely to have the failing component? Can you furnish any component designators? Apple service guides won't even tell you what the various LSI chips do, much less their pinouts or specifications. The "if it doesn't work, thow it away" mentality of Apple that I love so much... Thanks, Chuck