Why does this Antec squeal

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  • Pyr0Beast
    Badcaps Veteran
    • Feb 2009
    • 406
    #21
    Re: Why does this Antec squeal

    Hmm. If I remember correctly there was a case several years ago with whining (but working) PSU. It turned out the main transformer was 'falling appart'. Ferrite core got a bit loose. By applying about 2kg of pressure to it, the whining stopped.

      Comment

      • hardwareguy
        Badcaps Veteran
        • Jun 2006
        • 405
        • USA
        #22
        Re: Why does this Antec squeal

        Its likely the magnetics...poke the output inductors and the transformers with a plastic stick while its running.

          Comment

          • c_hegge
            Badcaps Legend
            • Sep 2009
            • 5219
            • Australia
            #23
            Re: Why does this Antec squeal

            Sorry to dig up an old thread, but I think I fixed it. Stj's idea of replacing the small caps worked. The only 3 caps I didn't change are a small 0.1uF 50v which I couldn't find a replacment for, and the primaries. For comparison I tried an SP-400 where I only replaced the bigger caps. It started to squeal at only 100W or so of load. The SP-450 with the small caps replaced, on the other hand, didn't make a sound, all the way from idle to when it shut down on the load tester.
            I love putting bad caps and flat batteries in fire and watching them explode!!

            No wonder it doesn't work! You installed the jumper wires backwards

            Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

            Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

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              • goodpsusearch
                Badcaps Legend
                • Oct 2009
                • 2850
                • Greece
                #24
                Re: Why does this Antec squeal

                How many watts it did?

                  Comment

                  • Pyr0Beast
                    Badcaps Veteran
                    • Feb 2009
                    • 406
                    #25
                    Re: Why does this Antec squeal

                    Where were those small caps located ?

                      Comment

                      • c_hegge
                        Badcaps Legend
                        • Sep 2009
                        • 5219
                        • Australia
                        #26
                        Re: Why does this Antec squeal

                        Originally posted by goodpsusearch
                        How many watts it did?
                        Umm I'm not to sure. It was set to 680W (and the resistors were cold), but it just can't be.

                        Originally posted by Pyr0Beast
                        Where were those small caps located ?
                        Everywhere. I replaced all but 1 of them
                        I love putting bad caps and flat batteries in fire and watching them explode!!

                        No wonder it doesn't work! You installed the jumper wires backwards

                        Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

                        Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

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