How to replace a psu fan?

[Flaccid Sausage]

Hello,

 

I Have an Evga supernova 1000w power supply. It recently started to make this rhythmic high pitched sound. I am certain it is the psu, I had a spare one and when I changed them the noise stopped. So I tried lubricate the bearing hoping it would help. It made a difference, but not much.

The specs say it has a 135mm fan, so my question is, can I just go out and by any 135mm fan or I need something more specific? My biggest concern is, the fan is fixed with smaller than normal case fan screws.

[manikyath]

that's probably a 140mm fan, they just list the blade diameter instead of the frame size.

 

past that.. it sort of depends on the power supply.. could be a standard connector, could require soldering, could be a non-standard connector, ...

 

also gotta note than caps charged to mains voltage arent exactly something you want to touch with your fingers. it's probably best to let the psu unplugged at least overnight before you start taking it apart, and are very careful around touching the main PCB.

[Biohazard777]

13 minutes ago, manikyath said:

could require soldering

If the fan wires are soldered to the PSU I just cut the wires and connect them to the wires of the new fan (strip, twist together, electrical tape or better yet heatshrink).
I mean the inside of the PSU is probably the only place where aesthetics don't matter at all, and as long as the connection is decent there won't be any difference in how the fan operates.

 

29 minutes ago, manikyath said:

that's probably a 140mm fan, they just list the blade diameter instead of the frame size.

I wouldn't be so sure, different PSU but same fan:

Original screws might not work.
 

32 minutes ago, Flaccid Sausage said:

Hello,

 

I Have an Evga supernova 1000w power supply. It recently started to make this rhythmic high pitched sound. I am certain it is the psu, I had a spare one and when I changed them the noise stopped. So I tried lubricate the bearing hoping it would help. It made a difference, but not much.

The specs say it has a 135mm fan, so my question is, can I just go out and by any 135mm fan or I need something more specific? My biggest concern is, the fan is fixed with smaller than normal case fan screws.

Why not get the exact same fan?
Part number is: HA13525H12F-Z

(135x25mm 0.5A 12V 2-wire)

15-20$ new on eBay

 

Or get a different fan and use some shock absorption silicone screws (if you ever bought Noctua fans you might have these already).

[SavageNeo]

You have to note that the psu might not like the new fan.

 

Treat psu's fan profile like a car ECU. if you change the turbo for a bigger one, you either have to replace the ECU or tune/remap it. For almost any psu remapping/tuning is not an option. Neither is replacing parts that control the fan profile, which means that in the worst case scenario, your psu blows up, since the psu thinks it has the old fan, which is specifically made for that psu.