REVscene Automotive Forum - View Single Post - Replaced PSU fan. Need to start manually.

Ferra · 03-20-2017, 08:26 AM

I just replaced my PSU fan on my Corsair PSU this weekend. The original fan was buzzing and making a lot of noise.

I installed a fractal R2 Silent fan on it. Size and fitting were perfect, and soldiering the 3wires fan to the 2 wires PSU connector werent' difficult at all.

The original PSU fan was 12V 0.58A
The Fractal R2 Fan I replaced was 12V 0.12A.
I did some research....which suggest as long as the voltage is the same and the new fan doesn't draw more amp, it is usually ok.
When i test the 2 fans, I also feel like the R2 Fan was pushing more air than the original PSU fan, even tho it was much quieter and uses less power.

After I installed everything and power up the system. I notice the fan only "shake" a bit when i turn on the power but doesn't spin. But once i give it a slight nudge (even a very very light push, it will start spinning normally like the other R2 fan I have in the case)

So I am guessing the fan is not getting enough voltage to "start" spinning the fan?
If so..is there anyway I can fix this? I don't think I can tweak the voltage since the fan connector is inside the PSU.
Do you think if I replace a fan with a higher amp rating, it will work fine? (I can't find any 120mm fan that draws 0.58A tho, most seems to be much lower)
But on the other hand, i thought it would be easier for the PSU to supply the right(higher) voltage since the new fan draws less power & current?

03-20-2017, 08:26 AM	#1
Ferra I don't like cheese but I love milk! Join Date: Nov 2002 Location: Van Posts: 1,980 Thanked 895 Times in 243 Posts Failed 105 Times in 49 Posts	Replaced PSU fan. Need to start manually. I just replaced my PSU fan on my Corsair PSU this weekend. The original fan was buzzing and making a lot of noise. I installed a fractal R2 Silent fan on it. Size and fitting were perfect, and soldiering the 3wires fan to the 2 wires PSU connector werent' difficult at all. The original PSU fan was 12V 0.58A The Fractal R2 Fan I replaced was 12V 0.12A. I did some research....which suggest as long as the voltage is the same and the new fan doesn't draw more amp, it is usually ok. When i test the 2 fans, I also feel like the R2 Fan was pushing more air than the original PSU fan, even tho it was much quieter and uses less power. After I installed everything and power up the system. I notice the fan only "shake" a bit when i turn on the power but doesn't spin. But once i give it a slight nudge (even a very very light push, it will start spinning normally like the other R2 fan I have in the case) So I am guessing the fan is not getting enough voltage to "start" spinning the fan? If so..is there anyway I can fix this? I don't think I can tweak the voltage since the fan connector is inside the PSU. Do you think if I replace a fan with a higher amp rating, it will work fine? (I can't find any 120mm fan that draws 0.58A tho, most seems to be much lower) But on the other hand, i thought it would be easier for the PSU to supply the right(higher) voltage since the new fan draws less power & current?