Electronic – PSU fan won’t turn on

fanpower supply

I recently purchased a 3 wire PSU fan for a project and was trying to power it using a computer power supply but it won't turn on.

I stripped 2 out of the 3 wires because I know the first 2 are the actual power supply wires, and the extra one just telling the motherboard how fast it's spinning. Since I'm using the fan for a hobby project and not for my computer I just ignored the third wire.

I connect the positive and ground to my power supply and all I get is one faint click sound from the fan? The power supply can provide 12V and 10A while the fan is rated at 12VDC and 0.2A. I don't think this should be a problem because I'm not forcing too much current? The fan can draw as much as it needs and the power supply just goes up to 10A.

https://www.youtube.com/watch?v=1UgoiEsoMzU It managed to work in this video.

Not sure what the problem here is so if anyone could help it would be great. Did I fry my fan somehow? Thanks in advance!

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P.S I'm pretty sure I wired it correctly because the striped should be positive and the wire with lettering is ground. Image above are the three wires for reference.

EDIT: The fan is part of a cpu cooler with a part number of SE-902-SD

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Best Answer

The power supply connections are applied wrong.

+12V is the middle pin on PC motherboard fan connectors.