Recently, the power supply unit in my tower has been making a faint, sort of crackling sound. Initially I thought it was just the fan, but after a couple days of use in this state I found that the unit makes the sound even when the computer itself is shut off but still connected to a wall outlet. I have sensitive ears, and i could only hear the sound when the computer is off with my ear only an inch or two away from the power supply, nobody else in my family could hear it.
The sound is more audible and crackles at a faster rate when the computer is turned on, but is still not especially loud, you would be unlikely to notice it unless you were specifically listening for any unusual sounds. What do you think is causing the problem, if it is a problem, and would i be able to fix it? Or do I have to replace the unit?
The power supply is a 1005W TechNPS. Thank you for your help!
Edited by Imaku, 22 July 2013 - 04:28 AM.