Have an Antec 450W "SmartPower" that is dead

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  • Pentium4
    CapXon Be Gone
    • Sep 2011
    • 3741
    • USA
    #1

    Have an Antec 450W "SmartPower" that is dead

    Computer was brought in that wasn't powering up, saw the Stupid Power sitting in there and knew why When plugged in all it gives is a high pitch whine, and when unplugged slowly fades quieter until it's silent. Does this mean that the 5VSB is working? It has an Asia-X cap on the 5VSB and the rest of the caps consist of Teapo, Koshin, Fuhjyyu, the primaries also being Fuhjyyu I dusted it out and removed some glue in it, I'll upload some pics
    Last edited by Pentium4; 10-01-2012, 06:27 PM.
    Tags: None
    • c_hegge
      Badcaps Legend
      • Sep 2009
      • 5219
      • Australia
      #2
      Re: Have an Antec 450W "SmartPower" that is dead

      The whine usually means that the 5vsb is running, but with excess ripple. Give it a complete re-cap (including all of the really small caps) and it should be fine.
      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

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        Comment

        • Pentium4
          CapXon Be Gone
          • Sep 2011
          • 3741
          • USA
          #3
          Re: Have an Antec 450W "SmartPower" that is dead

          Originally posted by c_hegge
          The whine usually means that the 5vsb is running, but with excess ripple. Give it a complete re-cap (including all of the really small caps) and it should be fine.
          Awesome, so you just think that since they're all terrible brand caps that some of them failed without bulging? Should I replace the input caps too?

            Comment

            • goodpsusearch
              Badcaps Legend
              • Oct 2009
              • 2850
              • Greece
              #4
              Re: Have an Antec 450W "SmartPower" that is dead

              The small caps fail without bulging. They just dry. The big primary caps can also dry without bulging. If you own an esr meter test every cap!

                Comment

                • Pentium4
                  CapXon Be Gone
                  • Sep 2011
                  • 3741
                  • USA
                  #5
                  Re: Have an Antec 450W "SmartPower" that is dead

                  Okay, I'll replace what I can with the caps that I have now and see if it works, and order some in the meantime and recap the entire thing later. Makes sense, where can I get a good ESR tester for a decent price?

                    Comment

                    • larrymoencurly
                      Badcaps Veteran
                      • Oct 2004
                      • 960
                      • USA
                      #6
                      Re: Have an Antec 450W "SmartPower" that is dead

                      I had 3 Antec SmartPowers in a row fail from bad caps in the 5Vsb, and all the others I had showed bulging Koshin, Teapo, and Fuhjyyu in that circuit. Only the Asia-X caps looked and measured OK.

                        Comment

                        • LDSisHere
                          Badcaps Veteran
                          • May 2012
                          • 727
                          • U.S.A.
                          #7
                          Re: Have an Antec 450W "SmartPower" that is dead

                          The SmartPower I am working on was making the same type noise when power was applied. Before proceeding you may want to check the 5VSB voltage level to see how high it is getting. If it is getting too high it will have damaged other components that will have to be replaced. I am currently chasing down the bad ones in mine that were damaged by over-voltage.

                            Comment

                            • Pentium4
                              CapXon Be Gone
                              • Sep 2011
                              • 3741
                              • USA
                              #8
                              Re: Have an Antec 450W "SmartPower" that is dead

                              I guess I'll just recap the 5VSB to start and see if that does anything. And if any of you guys know, what is the combined 12V output on these PSU's? Here are some pics for those who want to see
                              Attached Files

                                Comment

                                • goodpsusearch
                                  Badcaps Legend
                                  • Oct 2009
                                  • 2850
                                  • Greece
                                  #9
                                  Re: Have an Antec 450W "SmartPower" that is dead

                                  32Ampere (I just added up the 2 rails )

                                    Comment

                                    • Pentium4
                                      CapXon Be Gone
                                      • Sep 2011
                                      • 3741
                                      • USA
                                      #10
                                      Re: Have an Antec 450W "SmartPower" that is dead

                                      Originally posted by goodpsusearch
                                      32Ampere (I just added up the 2 rails )
                                      Isn't it usually lower though by at least a few Amps since it has 2 rails?

                                        Comment

                                        • Wester547
                                          -
                                          • Nov 2011
                                          • 1268
                                          • USA.
                                          #11
                                          Re: Have an Antec 450W "SmartPower" that is dead

                                          It depends on what the rectifiers on that rail are capable of (along with the choice of capacitors and their specs), but if it's one 15A and one 17A rail it probably means that combined it's something like 22A (or 264W), though I could be wrong.

                                            Comment

                                            • goodpsusearch
                                              Badcaps Legend
                                              • Oct 2009
                                              • 2850
                                              • Greece
                                              #12
                                              Re: Have an Antec 450W "SmartPower" that is dead

                                              Originally posted by Pentium4
                                              Isn't it usually lower though by at least a few Amps since it has 2 rails?
                                              A brand like Antec would state such limitations on the label. By not doing that you can assume that the total 12V amperage is the sum of the 2 rails.

                                                Comment

                                                • Pentium4
                                                  CapXon Be Gone
                                                  • Sep 2011
                                                  • 3741
                                                  • USA
                                                  #13
                                                  Re: Have an Antec 450W "SmartPower" that is dead

                                                  Okay cool, I guess it's worth the recap then

                                                    Comment

                                                    • Pentium4
                                                      CapXon Be Gone
                                                      • Sep 2011
                                                      • 3741
                                                      • USA
                                                      #14
                                                      Re: Have an Antec 450W "SmartPower" that is dead

                                                      Decided to test the 5VSB and it gives out 0.00V...so pretty sure sign it's the caps?

                                                        Comment

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