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Dell GX620 Power Supply squealing and buzzing?

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    #1

    Dell GX620 Power Supply squealing and buzzing?

    So, the power supply in my main rig (Dell OptiPlex GX620) has been working fine. But, it makes weird buzzing and squealing noises. I opened it up and found a bulged OST cap on the secondary side. Could this be the problem?
    The insides look kinda shabby to me. Small heat sinks and interestingly, another transformer mounted on the cover. Let me know what you think.
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    #2
    Re: Dell GX620 Power Supply squealing and buzzing?

    Originally posted by ncovert View Post
    I opened it up and found a bulged OST cap on the secondary side. Could this be the problem?
    Possibly. On my friend's Antec 350 power supply, it was a small startup cap 22uF 50V if I remember correctly. These smaller 6mm caps never usually bulge though.
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      #3
      Re: Dell GX620 Power Supply squealing and buzzing?

      Could be the bulged cap, although OSTs are known for failing without showing any physical signs so if you have one bad cap you may have others that aren't showing it, so it would probably be best to replace all caps from suspect brands.

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        #4
        Re: Dell GX620 Power Supply squealing and buzzing?

        Originally posted by dmill89 View Post
        Could be the bulged cap, although OSTs are known for failing without showing any physical signs so if you have one bad cap you may have others that aren't showing it, so it would probably be best to replace all caps from suspect brands.
        Okay, I guess I can try that. I just have to get ahold of the caps.

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