How To Check A Power Supply?

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - How To Check A Power Supply?

Tom's Hardware: Over 1.4 million members in 6 different countries available to answer all your high-tech questions. Sign up now! Its free!
Word :    Username :           
 

Hi there folks I'm planning on buying/building my new PC over the next four weeks, so i've already bought the Case and PSU now I havent bought the other items yet but i wanted to check that the case and psu work. Now i've installed the psu but when I turn it on nothing happens, is it broken? Or do I have to have it connected to a mainboard etc... for it to work?

And yes this is my first build :wink:

Would appreciate some help here.

Thanks.

Sponsored Links
Register or log in to remove.

you can test the PSU by connecting some hdd / dvd / cd drives / fans then "jump start" the PSU by simulating the "power_on" motherboard signal by shunting the "PS_ON" green wire to ground via a paper clip or something - then plugging the unit in and powering the rear switch on...

Here is an example of the atx jumper:

http://lib.store.yahoo.net/lib/directron/2psfig7small.jpg

It should fire up the PSU and stay on, the drives should be spinning and the cd/dvd should be able to eject. You *have* to have at least one hdd or cd/dvd drive connected to act as a "pull-up" load to power the unit on. The drives should spin up and the cd tray should be ejectable and it should stay on. If you have a voltmeter you can test voltages, but they may be out-of-spec some PSUs are like that in a low-load or no-load scenario

Reply to doolittle
- 0 +

Thanks for the quick reply! I was just worried the thing didnt work but from what you said i guess it wont turn on unless its connected to a motherboard?

Ok Newb question # two the PSU came with plastic ties around the wires near the actual box one going through the actual box and one next to it around the cables. I removed the black twist ties but i dont know if i should remove the ones next to the PSU box? :roll:

Hehe I know this must be a silly question to you veterans out there but im learning! ;)

This is the PSU i have iGreen Power 500W

Reply to Viceras

lol we were all noobs once... yea the mobo acts as the middle-man between the power-on switch on the case and the psu itself, no harm in fooling it as long as it's done correctly. Nice PSU by the way 8)

You can leave the twist-ties on if you like to help out with the cable organizing, but some use a metal insert like a garbage tie and for some reason I am paranoid of keeping those around since it is possible for the metal to wear out from constant twisting and may break off and cause a short on the mobo or worse a bottom-mounted psu 8O

Reply to doolittle
- 0 +

Ok just reading article, how about when the test is complete, the fan works for about 6 seconds and then cuts out. Any ideas

Reply to Baz1
- 0 +

I removed all the black twist ties but theres still those 2 white ones near and going into the PSU I guess they are supporting the wires but they're hard plastic. Plastic + electricity + Heat = Hmm should i be leaving them there?

Again thanks for the advice and quick reply i appreciate it! ;)

Reply to Viceras

No prob, as long as they are not restricting the length of the cable no harm done... If they are the zip-ties immediately after the cables exit the psu housing then yes they are for support so best leave them.

Reply to doolittle
- 0 +

Will do, now the hard part.... waiting! Looking forward to the build but from reading the forums i need alot more tools, there was me thinking i'd be ok with a phillips screwdriver! LOL. :wink:

Do i really need things like a static band? etc...

Thanks for your patience doolittle. Choosing parts, worrying about compatability issues etc.... can get a little over whelming to those of us just starting out ;)

Reply to Viceras

Doolittle, your post on the PSU testing was very impressive. I am so happy you posted that. Been in the business for over 35 yrs (mostly on the software end) and never heard of this method. Sure is going to save me a lot of grief on Thursday when I go to troubleshoot one of the pc's I built couple year ago.
Thank you very much. I am so glad I subscribed to these forum.

Reply to kpretired
Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > How To Check A Power Supply?
Go to:

There are 1455 identified and unidentified users. To see the list of identified users, Click here.

Please mind

You are about to answer a thread that has been inactive for more than 6 months.
If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.

Add a reply Cancel
Sponsored links
  • Ask the community now
  • Publish
Ad
They won a badge
Join us in greeting them