Power supply low buzzing noise?

[papasmurf211]

Just recently i noticed a low barely audible buzzing/humming noise coming from my silverstone 750w psu. I just installed some new hardware which uses more power than before so im guessing that its stressing the psu more causing the noise to get louder. Is it normal for a PSU to make a very low buzzing noise? Im very picky, this noise is just barely audible but i know its coming from my PSU. If its not normal, should i RMA or is there a way to fix it?

 

[stapleton87]

Voltage converters can make some noise, my laptop tends to whine slightly on battery power because of that. Check your voltages on your power supply if you think its a problem, you can use a program like pc wizard if you don't have a tester. Sounds like it could be the fan too. But if the voltages are good and the fan isn't about to slice open a wire, it probably isn't much of a problem.

*edit* oh, if you do have a tester or if you know how to cross the right leads on the 20/24 pin connector, you can turn on the p/s without having it hooked to the computer. might help isolating the noise further.