Question PSU buzzing

[Akisha12]

Hello guys.About 4 hours ago my PSU started buzzing and its driving me nuts.Its about 4 years and i never had any problems with it.I dont know if its the fan or an electical problems so i hope that somebody can help me solve it.Here is the recording of the noise.

https://soundcloud.com/aleksa-filipovic-329829118%2Fpsu-buzz

 

[jay32267]

A buzz from a PSU can be caused by lots of things.
It might be electrical.....like a coil whine scenario.....or it might be mechanical....like a bad bearing or fan blade interference.

I would try and find out which.

Sometimes you can just stop the fan....and if the noise goes away you know it's the fan.

If you can't figure it out and it's driving you nuts.....I would just get another PSU.