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Believe I have a faulty power supply?

Last response: in Components
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January 8, 2014 11:19:35 AM

Hi!
My PSU just arrived, and I am trying to check if it is working.

I plugged my 3 pin fans into this:
http://www.amazon.co.uk/gp/product/B009JCGIF6/ref=oh_de...

And nothing happens.

I have 2 of the products from amazon, and they both don't work. What should I do? Yes, the 12v fan is going into the 12v slot on the connector.

What should I do?


My CPU, motherboard, and gpu have not arrived yet, so I'm not sure how to test further.


What if I were to use a voltmeter?
Which parts should I measure to check for power?


Note - I have noticed that even though I have 3 pin fans, the connector from amazon only has 2 pins. I'm pretty sure the third is not needed, as it is going straight to the PSU, but I am not too sure.

More about : faulty power supply

January 8, 2014 11:26:09 AM

whats the type of psu?
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January 8, 2014 11:30:24 AM

McWelshie said:
whats the type of psu?


non-modular cx600
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January 8, 2014 11:31:48 AM

That product description seems to say a few interesting things.
1. It says they are 3 pin connectors, but you say yours only has 2 pins each.
2. It has high speed and low speed connectors, so they aren't all the same speed.

If you could give us the names/links to the products you have that would help alot.
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January 8, 2014 11:43:02 AM

you can use a voltmeter to check the yellow cable on the PSUs molex connector to see if it's getting 12vs and on the red to see if it's getting 5.
Then if that checks out hook up the fan connector and test the pins that are coming out where the fans would connect, same color scheme for the test.
Molex:
Color Function
Yellow +12 V
Black Ground
Black Ground
Red +5 V
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January 8, 2014 11:47:20 AM

James Mason said:
you can use a voltmeter to check the yellow cable on the PSUs molex connector to see if it's getting 12vs and on the red to see if it's getting 5.
Then if that checks out hook up the fan connector and test the pins that are coming out where the fans would connect, same color scheme for the test.
Molex:
Color Function
Yellow +12 V
Black Ground
Black Ground
Red +5 V


What if it doesn't get 12 or 5v from the PSU? Does this mean it's busted?



EDIT - Wait, it is working, and the connector is reading the same voltages. Why aren't the fans spinning around? I don't get it.
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January 8, 2014 11:53:34 AM

XdbodzX said:


What if it doesn't get 12 or 5v from the PSU? Does this mean it's busted?



EDIT - Wait, it is working, and the connector is reading the same voltages. Why aren't the fans spinning around? I don't get it.

I didnt say this in my first post because i wasn't sure but:
EXT64 said:
It only has two wires because the third is only the speed sensor out, which when hooked directly to the PSU is unnecessary. Have you tested to make sure the from fan works by plugging it into a known working port? Often those adapters are made very poorly, inspect it carefully to see if anything is hooked up wrong or is they did a bad attachment/solder job.

http://www.tomshardware.com/forum/272947-30-case-doesn-...
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