Crap.

Just sitting around playing some mp3s on my 9600/G4 the other night, the
"new" Q950 sitting quietly doing nothing, when everyone heard a loud
"POP" that sounded exactly like a .22 pistol going off indoors. That was
instantly followed by that "electrical burning smell."

I almost immediately noticed that the power light on the Q950 was off. I
couldn't get the machine to respond to any kind of start-up procedure.

I have recently replaced the floppy drive with a 24x CD-ROM drive (and
was trying to figure out a way to "bolt it down;" I had the side-panel
off the machine. I have also replaced the stock HD with two of my own --
a 20-gig IBM and 180-gig IBM internal SCSI drives.

A little probing with a multi-meter proves that the power supply has
officially "gone south."

I'm in shock.

I know I got the computer free (I only paid the $16+ to have it shipped
from West Virginia). I stoked up all the RAM slots until it was full.
BTW, this thing DOES have a PPC upgrade because it's been running Mac OS 8.5.

I've been searching high and low for a power supply replacement and am
heartily discouraged by what these things cost!!!

I think I'm even more disappointed that the HEFTIEST power supply Apple
ever made pooped-out on me!!! I mean, this thing is supposed to be rated
at a massive 300-watts!!! It even has extra power output ports on the bottom!

I've checked all the sites for troubleshooting, too. I wanna fix this
thing; not replace it, but I need to know WHERE to start looking for the
problem. Is it probably in the main transformer, or should I give
scrutinty to the rectifier??? I know how to discharge the transformer if
it's still holding any kind of charge. I'm an old hand at discharging
the so-called "throwback transformers in the Compact Macs. No biggie.
I've built power supplies from scratch in the past using nothing more
than an old schematic I got from Popular Electronics magazine from back
in 1974.

But I don't wanna use RADIO SHACK parts!!! I have PLENTY of experience
with their components, and I find they're not always top-notch. I can
get parts from other sources.

I really don't want to lose this Q950 because of a bad power supply. I
lost a highly-prized Q840-AV due to a thunderstorm last year, which
prompted me to buy a couple of APS UPSes.

Someone please help!

Allen
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