You cannot see electrons. No one can provide anything but
wild speculative answers if you do not provide necessary
numbers. You are working on computers. Therefore two
essential tools are a screw driver and a 3.5 digit
multimeter. So ubiquitous as to even be sold in Sears, Lowes,
Home Depot, and Radio Shack.
The background information necessary to learn why your power
supply 'system' (and yes the 'system' is more than just a PSU)
is not working was posted previously in: "Computer doesnt
start at all" in alt.comp.hardware on 10 Jan 2004 at
http://tinyurl.com/2t69q and
"I think my power supply is dead" in alt.comp.hardware on 5
Feb 2004 at
http://www.tinyurl.com/2musa
Now when you have a question, you have numbers so that
others can 'see' what is happening. In your cases, important
numbers on the 3.3, 5, 5VSB, 12 volt, Power On, and Power Good
signals is important. When power is suppose to be off, in the
one second after power switch is pressed, and when power
should be running. All those numbers or how those voltages
move is important.
Long before you fix sticking doors inside the house, first
you check the foundation. Same applies to computers. The
foundation is the power supply 'system'. That is where you
begin an analysis. Only after we have discovered the problem,
do we fix, swap, replace anything. Those measurements should
take only a few minutes. Reporting them numbers will take
much longer. Get the meter and don't even ask why. The tool
is that powerful. Problem identified that quick.
