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Old November 3, 2013, 05:31 AM
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Default Any reason why a PSU would not spin some case fans?

So I got a Corsair RM450 PSU - supposed to be quiet and efficient. I don't have the CPU / MB yet but thought I'd hook up the PSU and see if the case fans spin. Well I tried a couple of fans (molex connectors) and nothing spins. Is there any reason, other than a dead PSU, that it would not power the fans? Obviously I did not have the 24 pin plugged in since there is no motherboard yet. Maybe some crazy "safety" thing.

I can't think it is too hard to work - outlet to PSU to cable to fan - electrons flow - fan spins. am I missing anything?
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Old November 3, 2013, 05:51 AM
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How are you turning it on?
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Old November 3, 2013, 06:39 AM
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try the jump method? green to black(com) on atx connector #16-24pin #14-20pin
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Old November 3, 2013, 06:45 AM
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Just connected the 6 pin periphery connector to the PSU and the other end is a molex connector. the fan has both a 3 pin and a molex connector. Straight shot.
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Old November 3, 2013, 06:54 AM
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Quote:
Originally Posted by KaptCrunch View Post
try the jump method? green to black(com) on atx connector #16-24pin #14-20pin
In case you missed it, this is your answer... the green wire must be shorted to ground (any black) for a PC power supply to work. I've got a shorting plug I got from WC gear but prior to that I just used a paper clip.
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Old November 3, 2013, 07:11 AM
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yeah Steve sorry for vet wording jump = short
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Old November 3, 2013, 07:35 AM
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Ha! Fan Spins. Learn something new everyday. Another brain wrinkle.

Last edited by bonanza2000; November 3, 2013 at 07:41 AM.
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