PSU problem?

[Deleted]

Recently, my PSU fan started to do an annoying noise, like there is a cable standing in the way of the fan, but it isn't so because the noise doesn't happen all the time. Dust is also excluded because I cleaned the fan myself. It sounds like an electronic buzz or like some screws are loose, immediately after that it sounds like a fridge, and then it comes back to normal, and then it goes on and on.

Also, if I shut down the PC while the sound's happening, the fan doesn't instantly stop, it goes slower, and then the sound is even louder like a car, and sometimes it even speeds down, speeds up and speeds down again until it stops.

What the hell is going on? Could it be the bearings?

[BicycleMafioso]

Either the bearings are wearing out, lube is slipping, or you're experiencing coil whine.

PSU-fans usually run while comp is turned off at low RPMs to keep cooling off the components. That is normal (the sound however, is not).

[Deleted]

Thanks for the answer. Looks like I will get a new one tomorrow, with a better quality hopefully. My power supply cable exploded a few days ago because of a damaged wire, and now I don't want the PSU itself to explode.

[Deleted]

PSU usaly comes with very long warrenty