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  1. #1
    Member X@nder36's Avatar
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    Weird PSU buzzing

    Hey all. I've become more recently aware of an irritating buzz coming from the back of my PSU. My sig shows all my specs, and I know my PSU isn't nearly loaded, so I'm wondering what is causing this. I haven't had any signs of stability issues, so I think(?) its not dying. The noise is slightly less when I turn the computer off, and is gone when I flip the power switch to off on the back of the PSU. Anyone have any insight?
    CPU: Phenom II x6 1100T
    Cooling: Hyper 212+
    Memory: 8 GB Ripjaws 7-7-7-21
    GPU: GTX 460 1GB @900/2000
    PSU: Antec Earthwatts 650w
    MOBO: Asrock 890FX Deluxe4
    Storage: ADATA SP900 64gb SSD Boot + 2x160GB RAID-0

  2. #2
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    Corsair says that high efficiency PSUs seem to develop this buzzing noise? I have no idea if there is any truth to their statement.
    AMD 965 BE, C3 Stepping, 3.9 GHz. @ 1.4000V, 19.5 x 200
    CPU-NB = 2000 MHz. @ 1.20V
    HT = 1600 MHz.
    SB/HT = 1.26V
    Gigabyte GA-790XTA-UD4
    Sapphire 5770
    4 GB. Corsair CMP4GX3M2B1600C8 @ 8-8-8-24 1T @ 1.65 V
    PC Power & Cooling Silent 470 watt
    Enzotech Xtreme-X CPU heatsink/cooler

  3. #3
    Member X@nder36's Avatar
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    Interesting. I tried lowering my CPU voltage, and that seems to lower the buzzing, so I'll just keep it a bit lower for now.
    CPU: Phenom II x6 1100T
    Cooling: Hyper 212+
    Memory: 8 GB Ripjaws 7-7-7-21
    GPU: GTX 460 1GB @900/2000
    PSU: Antec Earthwatts 650w
    MOBO: Asrock 890FX Deluxe4
    Storage: ADATA SP900 64gb SSD Boot + 2x160GB RAID-0

  4. #4
    Member Chriscc123's Avatar
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    All the wonderful input i can give is that, its most likely the electricity your hearing, think of a transformer or and old appliance, they buzz because they are not insulated well (at least i think so).

  5. #5
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    because that is how they work. the AC is always humming, and "Switching" conversions and regulations Buzz & hiss. the more power you use the more you will hear it. assuming you can hear anything over the roar of fans. Meaning they are always Doing switching.

    if parts are not properly clamped down or comming lose this noise could get louder
    if things are dying inside internally they could get louder then give out
    if the thing is being pushed to the limit all the time, it is more likely to fail over time.
    if certain parts are failing , other parts can be worked more, like if a cap is failing a torrid choke it was cleaning up after will make more noise, stuff like that.

    Many GPU conversion and regulation curcuits Hiss from the digitial switching power regulations too, usually it is when it is loaded, and you have to be able to hear it over thier obnoxious fans.
    on one GPU board i got the fans quiet by adapting in mondo fans, then i get to hear the hissing power curcuits instead.
    Non-digital switching ones didnt have the noise, and some digital switching ones they cleaned up the noise using various tricks, like sealing coils, or using different/more parts.

    I would worry about it WHEN:
    it gets louder than it originally did when using the SAME ammount of power that you had before.
    If i suddenly heard it and it never made that sound before , and i had checked
    If a Capacitor is bulging or the top is splitting or in any way looking defective
    If when you check the Power comming out it is wrong, or dirty
    If many other users report that it Fails, but do Not report that it makes noise
    if this is the first time you used that much power, it might be normal but you might be pushing it too.
    .
    Last edited by Psycogeec; 11-07-10 at 12:22 AM.

  6. #6
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    same here,
    buzzing when idle and load..what happen? is capacitor almost damage?

  7. #7
    mjw21a's Avatar
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    How loud is the PSU? I just replaced my Corsair unit due to it getting to just over 3 years f age. Power supplies do degrade over time. I just prefer not to risk my other components so I replaced it.
    CPU & HSF: AMD FX-8120 & Noctua NH-D14
    Mobo: Asus M5A97-EVO
    RAM: 16GB (4Gx4) DDR3 2133 G.Skill RipjawZ F3-17000CL11Q-16GBZL
    Storage: 1x 120GB OCZ Vertex II SSD, 1x 250GB Samsung 830 SSD, 1x 1.5TB Samsung Silencer Series HDD
    GFX: 4GB Gigabyte ATI R9 270X OC Edition + Yamakasi Catleap Q270 SE 27" IPS LED LCD
    Audio: Asus Xonar DX, Senheiser CX270 earbuds + BM800 Condenser Microphone
    Case & Lighting: Silverstone Temjin TJ04-E w/ Side Window + Red CCFL's
    PSU: 550W Antec EarthWatts Platinum
    My rig piccies & links

    "Under democracy one party always devotes its chief energies to trying to prove that the other party is unfit to rule - and both commonly succeed, and are right." H.L. MENCKEN

  8. #8
    Member X@nder36's Avatar
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    The PSU is fairly quiet. It hasn't done it for a few days. Its just intermittently goes on and off, with no rhyme or reason. Its not very frequent though, and a shutdown will sometimes fix it.
    CPU: Phenom II x6 1100T
    Cooling: Hyper 212+
    Memory: 8 GB Ripjaws 7-7-7-21
    GPU: GTX 460 1GB @900/2000
    PSU: Antec Earthwatts 650w
    MOBO: Asrock 890FX Deluxe4
    Storage: ADATA SP900 64gb SSD Boot + 2x160GB RAID-0

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