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    #1

    Corsair VX450 recap question

    I'm recapping my Corsair VX450 due to age. From 2008, it's 6-1/2 years old now. The PSU works fine, loafing along at ~150-200W output.
    The caps are all United Chemi-Con, mostly KY and a few bigger KZE's, primary KMQ and one Rubycon YXG.

    The outputs have a single 1,000uF 16V KY on each, which seems small
    KZE ESR 23m 1.82A ripple 4,000hrs lifetime D=10mm
    KY ESR 46m 1.40A ripple 7,000hrs lifetime D=10mm

    The KY's have higher ESR but longer lifetime specs than the KZE.
    I'm not sure what to go with. Any recommendations? I'm tempted to upsize the O/P caps to maybe 1,500-2,200uF (D=12.5mm) if they'll fit.

    The PSU is made by Seasonic, inside looks like the Antec Earthwatts 430W, CX400W from 2008 etc.

    (here's generic inside pics, but w/Hitachi primary cap)
    Attached Files
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    #2
    Re: Corsair VX450 recap question

    Don't bother recapping it. The original caps should easily have another 5 or more years life left in them. Japanese caps last practically forever in a well designed power supply.
    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

    Comment

      #3
      Re: Corsair VX450 recap question

      I had to do a double take when the title read VX450. I remembered that unit as having all Japanese caps.

      c_hegge is absolutely right.

      The only thing that causes me to grimace when looking at those pics is the cheap Chinese organic glue that Corsair spec'd for that particular unit. Still, I wouldn't muddle. You're going to end up breaking something and regretting that you ever posted in the first place.
      "We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."

      -Leonid Brezhnev (On the Yom Kippur War)

      Comment

        #4
        Re: Corsair VX450 recap question

        Bear in mind too, that you actually have at least two caps on all of the outputs. The larger ones behind the wires are on the output filtering too.
        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

        Comment

          #5
          Re: Corsair VX450 recap question

          Yeah it's from when Corsair was making their name (2008)- afterwards they cheaped out on PSU caps.
          Thanks guys, I'll leave it alone.

          Comment

            #6
            Re: Corsair VX450 recap question

            KY and KZE are good series caps from United Chemi-con.

            If you leave your computer plugged into the AC outlet all the time, but turned off, you may want to investigate the 5V standby capacitor.

            When I get dead power supplies, almost 90%+ of the time, the 5V standby capacitor is obviously bloated. I attribute that to people turning off the computer, but not realizing that 5V standby is always present if plugged into an AC outlet.

            When I turn off my equipment, it is done via power bar.
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            Comment

              #7
              Re: Corsair VX450 recap question

              ^
              Even so, the 5vsb caps should be fine for a number of years too if they are Japanese parts. I've seen OSTs hold up OK for 5 years in the Antec EA-500 (which is otherwise identical)
              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

              Comment

                #8
                Re: Corsair VX450 recap question

                good caps in there. should be good for 10 years. I would take a few out and measure them to be safe

                Comment

                  #9
                  Re: Corsair VX450 recap question

                  I ended up recapping the PSU, as it has over 50,000hrs on the +5VSB portion. I didn't want to risk drama with my new mobo/CPU over $10 of capacitors.

                  Turns out, all the old Chemi-con caps tested fine- ESR is good, and I'm sure they would be good for years as c_hegge said.

                  Replaced with same Chemi-con (KZE, KY) parts purchased from Digikey, and was surprised the 1,000uF 16V parts are made in china while the rest are made in Japan.

                  Comment

                    #10
                    Re: Corsair VX450 recap question

                    Probably recapped it way too early. Those caps would easily do 15 years. I mean, I have old (vintage?) audio gear with 25+ year old caps that are still pretty much in spec. Even the caps in my CRT monitors from the late 90's are still holding up - and those are 85C -rated caps running in somewhat hot monitors.
                    Last edited by momaka; 02-24-2015, 05:08 PM.

                    Comment

                      #11
                      Re: Corsair VX450 recap question

                      Not probably, but for sure. There was no reason for that at all.
                      Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                      Exclusive caps, meters and more!
                      Hardware Insights - power supply reviews and more!

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                        #12
                        Re: Corsair VX450 recap question

                        Hehe, yeah. I'll gladly take those used "old" caps and reuse them again.
                        Even "good" Fuhjyyus find use with my various junk projects

                        Comment

                          #13
                          Re: Corsair VX450 recap question

                          Been thinking the same, but Canada Maybe mockingbird will be winning this, he is local…
                          Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                          Exclusive caps, meters and more!
                          Hardware Insights - power supply reviews and more!

                          Comment

                            #14
                            Re: Corsair VX450 recap question

                            With all of the snow we have been getting in the North, I don't think anybody will get anything

                            Comment

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