Hello. I have an Evga Supernova NEX650G Gold Power Supply 650W which i bought here in Greece during the previous summer. During the past weeks, the PSU started making a buzzing electric sound. It's not very loud, but you are able to hear it, especially if you are near the PC/PSU.
 
I checked for loose connections, tried the computer on another socket, with and without a UPS, nothing helped. According to the BIOS, the PSU is giving the correct voltages and there has been no malfunctions. But is this sound normal?
 
This is my configuration:
 
CRUCIAL BLS2CP4G3D1609DS1S00 BALLISTIX SPORT 8GB (2X4GB) DDR3 PC3-12800 1600MHZ DUAL CHANNEL KIT
ASROCK Z97 EXTREME4 RETAIL
COOLERMASTER RR-212E-16PK-R1 HYPER 212 EVO
INTEL 520 SERIES SSDSC2CW120A310 120GB SSD 2.5'' SATA 3 BROWN BOX
ASUS GTX770-DC2OC-2GD5 2GB GDDR5 PCI-E RETAIL
INTEL CORE I5-4690K 3.50GHZ LGA1150 - BOX
FRACTAL DESIGN DEFINE R4 BLACK PEARL
WESTERN DIGITAL WD10EZEX 1TB CAVIAR BLUE SATA3
LG GH24NSB0 SUPER MULTI DVD-REWRITER SATA BLACK
EVGA SUPERNOVA NEX650G GOLD POWER SUPPLY 650W
 
Since i'm from Greece, can i request for a replacement unit directly through Evga? The retailer, who checked the PSU some months back (when it was making a similar noise that turned out to be a bad cord) didn't found any problem with the PSU or my PC (and charged me 15 euros just for checking...).
 
EDIT: The buzzing is constant, independent from load, when the computer is on. Also, it doesn't seem to be fan-related.
EDIT2: Just found this vid.me/qB2. The constant buzzing is similar (if not the same) to the constant buzz i can hear in this video. Is this harmful for my PC?
EDIT3: And here is the noise that my PSU is making (starting at 00:09): vid.me/Sqke

No., no noise when computer is off. Only when it's on and i think that sometimes it gets louder.
 
I'm starting to believe that it's coming from the fan...
 
Any recommendation from EVGA support?

DJDBgr
No., no noise when computer is off. Only when it's on and i think that sometimes it gets louder.
 
I'm starting to believe that it's coming from the fan...
 
Any recommendation from EVGA support?

You would need to contact Support and ask them, that is what Support is for.
http://www.evga.com/Support/ticket/support.aspx

That's not big problem than.
I doubt you hear fan buzzing but maybe...
You should decide what to do, technical support or to continue to use if noise is not loud.
 

DJDBgr
OK, i opened a support ticket and they are going to replace my PSU under RMA. For future reference, they told me that it's either coil whine or another problem.
 
But because i forgot to ask and EVGA isn't going to respond until Monday, i have a quick question, if anyone knows the answer:
 
Do i also have to send all the modular cables that came with my PSU or just the PSU?

I would send them cables, but you can ask just to be sure, maybe they send you only PSU.
But I doubt they will send you everything. 

Ask them in Monday.
When I send NEX1500 to Munich I sent and cables and beg, but I kept EVGA Velcro tie in red and black colors for future.
6 pieces. 2 reds and 4 blacks. heee heee... They probably thought to keep for self them but I was faster.
Now I looked, looks like and you got them, keep them for self if you want. They are very useful.