To clear up some questions you have, the power supply that is not
working is a 550w achieve. It gets a green light on M/B but will not
power up. I read the post that was referred in reply but it was not
clear to me on how to troubleshoot. if someone can direct me to
another location or site that explains it more clearer.

it is a little frustating because i do not know anything about how to
diagnose the problem. It is also strange that the power supply does
not work in both of my computers. I have a feeling that the problem
is something minor and when i figure it out i will be slapping myself
in the head.

Please keep the suggestions coming. I really appreciate the
assistance.


Thanks,

Mike













(w_tom) wrote in message . com...
Same procedure reports what of three subsystem components is / is not
working. Takes but minutes to get necessary information if you come
equipted with necessary tool (3.5 digit multimeter) and knowledge.
Procedure may be found in "Computer doesnt start at all" in
alt.comp.hardware on 10 Jan 2004 at http://tinyurl.com/2t69q using
voltages in table:

Voltage Wire Color Min V Max V
+5 V Red 4.75 V 5.25 V
+12 V Yellow 11.4 V 12.6 V
+3.3 V Orange 3.135 V 3.465 V
+5VSB Purple 4.75 5.25
!Power On Green 0.8 2.0
Power OK Gray 2.4 when power is good

or in "I think my power supply is dead" in alt.comp.hardware on 5
Feb 2004 at http://www.tinyurl.com/2musa

With numerical data, then reason for problem is isolated to
motherboard, power supply, or power switch. Or the power supply
subsystem is found to be OK meaning we move on to other 'usual'
suspects.

(mike) wrote in message . com...
I have a very unusual problem with my power supply that I or noone
else can figure out. here goes;

My wife's computer-motherboard and power supply and cdrom stopped
working I assume some type of surge. I replaced her motherboard and
used a power supply from my computer and got her up and running. No
problems her computer started up right away.

I then bought a new power supply for my computer and installed it. No
problem light on M/B was on but computer would not start up. I tried
checking switch wires etc... and all connections no luck. I thought
maybe the power supply was defective. I even tried it into my wifes
computer and it did not work.

I then bought a new power supply and the same thing happened, it got
power but would not start. I tried it in both computers and no luck.

I then switched the power supply from my wifes computer(my original)
and my computer started right up.

To sum it up, my original supply works in both my computer and my
wifes. I then tried 2 new supplies which did not work in either
computers.

Any help would be appreciated. I am lost.


Thanks,


Mike