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Power supply noise

post #1 of 2
11/9/12 at 4:13am
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Hey guys i just noticed a chirp like noise coming from my power supply, it occurs ever ~9 sec and does not vary in interval or intensity (regardless of load). It is not loud but i wouldn't say quite ether as for what it sounds like it makes a tist noise for a very brief period. I tested it with occt for awhile and the voltages seemed quite steady it just annoys me, any thoughts on what it is?
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My System
(16 items)
  		  
CPUMotherboardGraphicsRAM
I7 2600k @ 4.5 ghz 1.4v GIGABYTE GA-Z68XP-UD3P Evga 570 GTX 870 core 2070 mem 1025mv (2x4gb) Corsair XMS3 @ 1866mhz 9-10-9-27 
Hard DriveHard DriveOptical DriveCooling
Samsung 830 64 gb 500 gb 7200 Rpm DVD-RW Nh-d14 /w 6 Noctua p12/14's 
OSMonitorKeyboardPower
Windows 7 64 bit 23in LG Ducky OCN w/ mx cherry browns 850 watt corsair tx 
CaseMouseAudio
Cooler master storm trooper Logitech g5 Asus xonar dg/ w ath-m50 
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post #2 of 2
11/9/12 at 4:26am
its kinda hard to tell from your description, but if there is a hissing sound - it could be a bad cap. If its more of a squeal at a low level, then it'll just be a coil I would think, which is perfectly normal.

The fact it doesn't change under varying loads could mean its on the +5Vsb side of the PSU where the load rarely changes. You'd be able to tell, as the noise would still be there with your PC powered off, but still plugged in to the mains.
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