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Old April 8th 04, 04:44 AM
jamotto
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(mike) wrote in message . com...
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.

Here is what the power plug pinout should look like

clip that holds the Power Supply connector on is in this
direction "-" the pin layout/voltages should be as follows

12V : 5V
5VSB : 5V
PW-OK: -5V
GND : GND
5V : GND
GND : GND
5V : PS-ON -
GND : GND
3.3V : -12V
3.3V : 3.3V

hope this helps