>So how much work are you willing to do on a PSU that, once
>repaired, may have the same limitation as before and other
>weaknesses that can similarly cause failure?

If it's something I can accomplish with mininimal cost and labor I want to
do it as an exercise more than anything.. if it works I'll keep it as a
low-power spare.. (It wasn't meant for this kinda load anyway.. even the
mainboard/cpu info reccommends a minimum of 450W..

I have no problem taking measurements from a live supply.. a have two DMMs
(one has frequency, diode, transitor, and capacitance) and a small analogue
meter.. the only thing I don't have is a scope.. do they make handheld
versions of these like they do multimeters ? Also can you get LCD/digital
scopes as opposed to a CRO ?

Here's the breakdown of the specs (WIN-350PS):

+3.3V = 15A
+5V = 25A
+12V = 15A
-5V = 0.6A
-12V = 0.6A
+5VSB = 5A

Combined 3.3v/5v rails = 150W max

The voltages were all well within spec, I can't remember the exact figures,
but they were like +12.3V, +5.26V, +3.42v, etc.. (a hell of a lot better
than the readings from this temporary psu.. not a single one is within
spec.. all of them are 0.25 - 0.6v under par..)

The testing method to check if the PSU was dead is simple.. plug in an old
10GB HDD so there's some load and jumper PS-ON# to ground. I had it running
that way before.. but after it died there was no response.. it still sounds
like something charges though when I jumper PS-ON.. (like a very brief
buzzing noise)..

The psu came with my case about 3 years ago and I've never had a problem
with it til now, so I guess I got my money's worth.. I'll be putting a
brand name PSU in my PC next pay I think.. I was looking at the major
players like Silverstone, Enermax, Antec, Fortron, etc.. I'm thinking about
650W would be sufficient..

This is my current setup, maybe you can recommend a particular model PSU:

MSI K9N-SLI (nForce 500)
Athlon X2 64 5200+
2x 512MB Kingston HyperX PC6400 RAM
Radeon X1600 Pro 256MB
Western digital WD800JB
Western digital WD2000JB
Sony/Optiarc DVD-RW AD-5170A
AOpen CDRW CRW5232

You posted a lot of useful information, I'd be the last person to complain
about too much detail.. even if I don't go into that much detail to fix the
PSU, it's good to know incase I need to hack one up for a custom project..
On that note.. why do UPS's not just supply 5, 12 and 3V rails instead of
120V/240V ? It makes very little sense to convert 12 or 24V from backup
batteries up to line voltage only to step it back down to 12V again anyway..

I've seen people hack up PSU's into DC-DC supplies that run from a car
battery, so the extra info helps..

Thanks kony..

Regards,
Chris