It's about 5 or 6 years old and I brought it out of the closet to run
Linux. It ran continuously for some months and then one day it was just
dead.  When I hit the power button, the front panel led comes on for
just a second and makes a very light "fsss" sound, which I cannot place.


I'll check out the PSU checker.  It'll be good to have in my box of
stuff.

Thanks to you and all who answered.

-Lindy

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
Of SM Ling
Sent: 28. tammikuuta 2008 3:06
To: Microcontroller discussion list - Public.
Subject: Re: [OT] How best to test a computer power supply

>
> One of my older servers just died.  How can I check to see if it is
the
> power supply (PS)?


Did it show symptom like difficult to start? can't power more USB? or it
has
clocked at least 1.5 year continuous running hour?  If so, chance is
very
high that it is the PS.

Test with the a new PS, or test the suspect PS on a known good board?

I came across old intel server that startup circuit was problematic
also.
To test this, I simulated the PON (power on) signal to the PS to see if
the
PS turns on - the PS fan was a good indicator.

Cheers, Ling SM
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