View Single Post
  #4   Report Post  
tempus fugit
 
Posts: n/a
Default testing ATX power supply

Thanks

I've tried it with a known good power cord, so that's not it.

Thanks for the tips


"Rheilly Phoull" wrote in message
...

"Sam Goldwasser" wrote in message
...
"tempus fugit" writes:

Hey all;

A friend handed me her dead computer to see if I could get it up and
running. When you turn it on, nothing happens. No lights, no fans,

nothing.
So, I figure it's either the power supply or the motherboard (at

least).

I want to test the PS first, before just replacing it. It is an ATX

300w
supply. I connected an 8 ohm 10W resistor from red (+5v) to black

(ground)
and turned it on, but nothing happened. I then turned it on and

shorted
the
green wire to ground, but still nothing. Can I assume the PS is dead,

or
is
there something else I should be doing?

Thanks


That should do it assuming your AC power is present.

--- sam | Sci.Electronics.Repair FAQ Home Page:

http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Site Info:

http://www.repairfaq.org/REPAIR/F_mirror.html

Important: The email address in this message header may no longer work.

To
contact me, please use the feedback form on the S.E.R FAQ Web sites.


You can get a faulty mains switch or power lead too, the quality isn't too
great !

--
Regards ........ Rheilly Phoull