Hi I recently bought a 500W power supply and its been working great for about 5 months now.
But recently, I've been hearing this crackling noise and it took me 2 days to find out where it came from, and I found out that it is coming from my power supply.
My power supply comes with this little knob which controls the speed of the PSU, and I decided to give it a try and slow it down, and as expected the sound died down with it. But, the crackling noise stays. Not too loud, but still annoying.
Out of fear that my computer would overheat, I turn up the speed every once in a while. Proportionally the sound would get a bit louder.
It goes something like this: CRACKLE -CRACKLE -QUIET -CRACKLE CRACKLE - QUIET. And theres an occasional quiet squeal along the middle. Any solutions guys?