Replacing PSU fan with a 4 pin variant

ianmason

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Jan 7, 2008
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Hi All,

My PSU fan is now the loudest part of my system so I bought an Akasa APACHE fan to replace it. the problem is it has a 4 pin connector and the PSU only has GND, 12v. I have connected the Ground and 12v wires together and booted. It will only pulse the fan though and wont spin up. Can anyone help??

Thanks
 

ianmason

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Jan 7, 2008
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I've tried all four

PSU has;

Red
Black

Fan has;

Black
Yellow
Green
Blue

The pulsing occurs when the blacks are connected and the red is connected to the yellow??
 

ianmason

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Jan 7, 2008
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I cut the old fan off which was connected with a red and black wire. There is no yellow wire connected to the old fan. Do you mean to splice into a yellow wire exiting the PSU?
 

ianmason

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Jan 7, 2008
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Just tried it in a molex connector, black to black (GND) yellow to yellow (5v) works. Now how to sort it in the PSU ??? Hmmmmm