"Coil whine" in PSU?

Prof7 · March 31, 2015

Hi,

I have a problem, my power supply has a case of whining. I've recently bought a CM V-series 550w power supply

I've send it back to the reseller, but they could not reproduce the same whining as I have at home.

At this point I don't know if it's coil whine (probably not) or even caused by the psu. The sound deffenitly came from the psu, but since the could not reproduce it, I don't know if its the fault of the PSU.

My question is if it's possible that my motherboard causes coilwhine in my powersupply or if it's something like ripple in the AC.

- prof7

GodSpoon · March 31, 2015

That makes me more nervous than a graphics card, if you have someone elses hardware you could try it out on I would do that

If it still whines I would send it back, not worth risking hardware, even if thats a reputable PSU

GuyNamedBrad · March 31, 2015

Hmm try running it without your graphics card ? Then try listening for the sound? This problem could be from it either not having enough voltage of its trying to regulate the incoming power from the wall and is stepping it down. (Not an electrician but know quiet a bit)