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    Antec SmartPower SL350 Recap

    The one that started it all for me...

    Antec SmartPower SL350 350w

    Was the heaviest used one of 2 like units.

    Loaded with Fuhjyyu save 1 which was a Teapo. Units were in service 5 years or more, running 24/7, and were used when I got them. Probably their saving grace was they are dual fan units. One 100mm on top and an 80mm out back.

    Project was a TOTAL electrolytic cap replacement - 19 pieces.

    I stayed with Panasonic's as much as possible with a few Nichicon's here and a UCC there.

    I dealt with the 12.5mm in a 10mm and 10mm in an 8mm space issues as simply as I could. In the end no cap was left "flying" on its legs. Those that ended up being off the board a bit were within 3mm of the board. The most problems were had with the pi filter inductors. Those were handled by loosening their solder and tilting them away a bit. Then the cap would fit, and the coil was not out of place. The cap spots near the edges at the output were blocked by the wiring, but some gentle persuasion made them fit. Yes, they are packed in like sardines, but every one of them fit.

    Back together and tested, the ripple with about 30% load for each output was <30mv for 12v and <20mv for 5v and about 10mv for 3.3v.

    The original caps:
    Code:
    1 - 3300/6.3 - 10x25 (the only Teapo)
    1 - 100/10 - 5x11
    2 - 1000/10 - 8x20
    2 - 3300/10 - 10x25
    1 - 4700/10 - 10x36
    1 - 330/16 - 6.3x15
    1 - 820/16 - 8x20
    2 - 2200/16 - 10x30
    1 -  47/25 - 5x11
    1 - NP 1/50 - 4x7.5 (non-polarized)
    1 -  1/50 - 4x7.5
    2 -  10/50 - 5x11
    1 -  22/50 - 5x11
    2 - 820/200 - 25x41 snap-in
    -----
    19 caps
    The replacements:
    Bold type denotes differences.
    Height changes are not denoted as nothing interfered in that regard.
    Code:
    1 - 3300/6.3 - 10x25  - Nich HZ
    1 - 100/10 - 5x11  - Pana FM
    2 - 1000/10 - 8x20  - Nich HZ
    2 - 3300/10 - [B]12.5[/B]x25 - Pana FM
    1 - 4700/10 - [B]12.5[/B]x35 - Pana FM
    1 - 330/16 - [B]8[/B]x11.5 - Pana FM
    1 - [B]1000[/B]/16 - [B]10[/B]x20  - Pana FM
    2 - 2200/16 - [B]12.5[/B]x25 - Pana FM
    1 -  47/25 - 5x11  - Pana FM
    1 - NP 1/50 - [B]5[/B]x11  - Nich ET
    1 -  1/50 - [B]5[/B]x11  - Pana FC
    2 -  10/50 - 5x7   - UC-C KZE
    1 -  22/50 - 5x11  - Pana FM
    2 - 820/200 - 25x50  - Pana HB (second unit will get CDE SLP's)
    B&W photo shows caps placement.

    There are no photos of the first one as it was needed elsewhere quickly. It's still cranking along today. (6 months @ 24/7)

    I'll put up pics of the second one when I finish it. It's in the 'To-Do' box with all its caps.

    Toast
    Attached Files
    veritas odium parit

    #2
    Re: Antec SmartPower SL350 Recap

    For mains capacitor, you show in your chart that the original capacitor (820 uF) was 25 mm and the replacement capacitor is also 25 mm. I am recapping a SL400 and noticed that the 820 uF is available in both .866" dia and 1" dia (25 mm). Would there be any advantage in using the smaller diameter capacitor in this location? Or would it simply not matter since this is a mains capacitor?

    On my psu, the capacitor value is 1000 uF, and is available in both sizes. I am looking at Digikey p/n:
    565-2956-ND 0.866" dia
    565-2957-ND 1.00" dia
    Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)

    Comment


      #3
      Re: Antec SmartPower SL350 Recap

      That particular value cap is available in 4 sizes. They are all the same in ripple at 2.30 amps.

      I don't believe it matters which of those you choose. Pick the one that matches and fits and go!

      There is also the CDE 25x50 @ 2.42A which I chose for my 2nd 350 when I get to it:
      338-1452-ND - http://search.digikey.com/scripts/Dk...me=338-1452-ND
      veritas odium parit

      Comment


        #4
        Re: Antec SmartPower SL350 Recap

        If the PCB is packed pretty tight and the ratings are the same on caps in question then I'll usually go with the smaller diameter to let more air move around them. [Cooling.]
        Mann-Made Global Warming.
        - We should be more concerned about the Intellectual Climate.

        -
        Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.

        - Dr Seuss
        -
        You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
        -

        Comment


          #5
          Re: Antec SmartPower SL350 Recap

          Thanks for the advice on the caps. Now for the waiting period between ordering caps and having caps in hand to do the job.

          In the meantime, I have been eyeing that "two transistor" 5vsb circuit. Why not. So today I removed most of the parts in the two transistor circuit and installed my add-on DM311 board. Works great. Here are a couple of photos and some drawings.
          Attached Files
          Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)

          Comment


            #6
            Re: Antec SmartPower SL350 Recap

            >>Now for the waiting period between ordering caps and having caps in hand to do the job.<<

            Well, while you're waiting, do up a list of what was there and what you replaced them with like I posted.

            PLEASE not in PDF format...

            ((Yes, I'm abusing that smiley))

            Toast
            veritas odium parit

            Comment


              #7
              Re: Antec SmartPower SL350 Recap

              The Toasty drawing/photo is really good - no need to put same info regarding my Antec SL400. PC board looks identical. So I will talk only about differences.

              First, the "Mains" capacitors are 1000 uF/200 volt instead of 820 uF. Both are 25 mm (1 in.)
              So I am ordering UCC KMQ 1000uF/200 volt (Digikey 565-2957-ND).

              From Topcat - will order the following 10 mm caps:
              4700 uF/10v Fuhjjyu -> 3300 uF/10V
              two 3300 uF/10V Fuhjjyu -> 3300 uF/10V
              two 2200 uF/16V Fuhjjyu -> 3300 uF/16V Samxon

              All remaining capacitors have been changed from Fuhjjyu to Nichicon PW(M) series.
              820 uF/16V -> 1000 uF/16V
              100 uF/10V -> 100 uF/16V
              NP 1 uF/50V -> 1 uF/50V
              All remaining values and voltages remained the same. All capacitor locations same as in Toasty picture in first thread.
              Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)

              Comment


                #8
                Re: Antec SmartPower SL350 Recap

                I tested the 4700 uF/10 volt Fuhjyyu capacitor which I removed from this Antec SL400 psu. This psu was used when I got it, and has been in service in my computer for about two years.

                ESR = .02 (using Blue ESR meter)
                Capacitance = 4.45 mF (4450 uF) (using B&K Precision Model 878)
                Dissipation Factor = .177 (also using B&K Precision Model 878)

                Capacitance is 94.68% of value marked on label - well within tolerance.
                Lower limit for 4700 uF is 3760 uF.

                Now I am wondering why Antec would use 4700 uF as input PI filter cap and 3300 uF as output PI filter cap? These two capacitors are on the 5 volt rail.
                Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)

                Comment


                  #9
                  Re: Antec SmartPower SL350 Recap

                  More uF helps transient response.
                  The would be voltage changes much slower than ripple.
                  If they loaded the PSU side heavy it's probably to compensate for unstable voltage regulation.
                  -
                  But, how do input and output ESR's compare.
                  The higher uF may just be a side effect of balancing [tuning? tweaking?] ESR.
                  .
                  Mann-Made Global Warming.
                  - We should be more concerned about the Intellectual Climate.

                  -
                  Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.

                  - Dr Seuss
                  -
                  You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                  -

                  Comment


                    #10
                    Re: Antec SmartPower SL350 Recap

                    Thread necromancy - Update.

                    -Finally- got to do the second one of these after sitting in the box for 2 years with all the parts. Did the same as before on the caps. Every-one of them. Did use the CDE's for the mains filter. Perfect!

                    Did move and re-drill the board for the 12v coil. Didn't like how tight the 12.5 cap fit. Too crowded. Did same for one 3.3v output cap too. Too tight and flipped the resistor around as in the pic in Post 1. Factory had the body down in between the 3.3v coil and the 2 caps.

                    Peeled and lubed both fans bearings, just because.

                    Used the first PSU (2009) to replace a customers dead and -pathetic- replacement power supply in a Dell Dimension 4600i series. Powerlink was the brand, LPJ2-20, with a popped 5vsb cap and a popped -5v cap. Grand total of 5 output caps, none larger than 10x15. Fuhjyyu and Canicon...

                    Pics attached for your entertainment.

                    Toast
                    Attached Files
                    veritas odium parit

                    Comment


                      #11
                      Re: Antec SmartPower SL350 Recap

                      I like the new fresh design on that UL logo. Goes very well with the number under it .
                      And 2 diodes on a bracket apparently can give 14A. Yeah, true story .

                      Comment


                        #12
                        Re: Antec SmartPower SL350 Recap

                        I'm pretty sure it's a stinkworld (linkworld)
                        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


                          #13
                          Re: Antec SmartPower SL350 Recap

                          I did a recent (partial) re-cap on an SL-350, and also have a (similar design) SL-400 awaiting the same treatment. I was wondering if it was possible to force the fans to full speed. I know I could do this by direct connecting both to the 12v line but can something be done to the fan circuit to do the same thing? Possibly bypassing the thermal sensor? Or would that foul something else up?

                          Comment


                            #14
                            Re: Antec SmartPower SL350 Recap

                            Perhaps starting your own thread asking that question would get a response...?
                            veritas odium parit

                            Comment


                              #15
                              Re: Antec SmartPower SL350 Recap

                              Sorry; please consider my post removed. I would remove it if this was allowed by the forum software.

                              Comment

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