I have a question about power supplies. I have a Cooler Master Real Power M620 (6 months old) and a new Corsair HX850. The M620 was making a strange soft ticking sound (short little buzzes in the rythym of a HDD sound). So i took the power supply out of the case to isolate the sound and it could clearly hear it coming out of the PSU. At first I thought the PSU is faulty, but the Corsair HX850 is making the exact same sound. I'm aware of the phenomena Coil Whine:
Removing Cables close to motherboard coils
Turning off fans close the power cables
Turned off Smooth Scrolling in IE
Turned off WIFI entirely
HDD disconnected, ran live cd
Disconnected all USB connections
The sound is still there when the computer has shut down, ive just noticed.
I tried everything and nothing would work untill my girlfriend shut down her laptop that is connected to the same power group. The sound in my psu dissapeared completely. Didn't think it could such a silly simple thing.