• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 274
  • Last Modified:

I want to test a pwr supply that I pulled out of a computer... is this possible

I have read that I can test it when it is hooked up in the case yet but its hard to get a good reading so I disconnected it and would like to test the voltage. if I put one probe in one or more of the sockets would I be able to get a accurate reading or does the pwr supply need to be connected to the motherboard yet.
0
jploessl
Asked:
jploessl
3 Solutions
 
TheAmeobaCommented:
You just need to short the two pins for the power switch to turn on the power supply, then you can measure the voltage from the various pins. Although be careful not to short any wires you shouldn't.

Alternatively, you can buy power supply testers that you can plug it into which will do the testing for you without the need for a PC.
0
 
dbruntonCommented:
You can measure the voltages that way with no problems.

But read this http://www.hardwaresecrets.com/article/Why-99-Percent-of-Power-Supply-Reviews-Are-Wrong/410/1 especially Page 2.
0
 
TheAmeobaCommented:
That's a really good article, good find.

I'm not sure what you are trying to achieve whether it be a quality test of the PSU or just finding if it still works, if it's the later a simple PSU tester or reading the voltages will suffice.
0
WEBINAR: 10 Easy Ways to Lose a Password

Join us on June 27th at 8 am PDT to learn about the methods that hackers use to lift real, working credentials from even the most security-savvy employees. We'll cover the importance of multi-factor authentication and how these solutions can better protect your business!

 
CompProbSolvCommented:
Keep in mind that the power supply may not work if you don't have an adequate load applied to it.  If you just power it up with nothing attached, it may shut itself off.
0
 
nobusbiljart fanCommented:
the only real valid test is booting a pc with that motherboard, all other tests are fine, but not conclusive imo
how to power it up : http://www.gideontech.com/content/articles/196/1
here a nice article on it :  http://www.techrepublic.com/article/power-supply-troubleshooting-with-a-multimeter/1056686

a flowchart on how to diagnose it :  http://www.fonerbooks.com/power.htm
0
 
jploesslAuthor Commented:
thanx
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Cloud Class® Course: Microsoft Windows 7 Basic

This introductory course to Windows 7 environment will teach you about working with the Windows operating system. You will learn about basic functions including start menu; the desktop; managing files, folders, and libraries.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now