Antec SB350 ...whining...

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  • eccerr0r
    Solder Sloth
    • Nov 2012
    • 8703
    • USA
    #1

    Antec SB350 ...whining...

    Well it was inevitable. My Antec SB350 (SmartBlue - I think it's just the same Smart Power with blue LED fans... hey it was on sale...) is starting the whine that my SP400 did before it died. I think a recap is coming soon. Darn those Fuhjyyu's...

    Leaving it unplugged unless I need the machine until I get new caps for it... and hopefully save it before the 5VSB circuit kills the KA7500 again...
    Tags: None
    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: Antec SB350 ...whining...

      I fixed one for my friend. It was the 22uF 50V that was causing the whining. And yes, the Antec killed his nice socket 775 Intel board because 5V SB measured 11V DC.
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        Comment

        • Pentium4
          CapXon Be Gone
          • Sep 2011
          • 3741
          • USA
          #3
          Re: Antec SB350 ...whining...

          11V on the stand by? Ouch! I recap them even if the caps look good. Although those Fuhjyyu'd Antec's can be a pain in the ass to recap...the caps are buried in the wires and in hard to get places

            Comment

            • eccerr0r
              Solder Sloth
              • Nov 2012
              • 8703
              • USA
              #4
              Re: Antec SB350 ...whining...

              Wow... I guess I got lucky that the SP400 didn't kill the motherboard, but it did kill its own main controller chip.

              I was using the SP400 on an old socket 775 board as well, with AGP and DDR1 sockets... Not the nicest of boards but I'm surprised it survived the wrath of failed fuhjyyus...

              Oddly enough the SB350 was the replacement for the SP400 on that particular Socket 775 board (with a P4 3.4GHz) when it died the first time around... I would have normally called this a bad omen but Fuhjyyu is really the bad omen...

                Comment

                • c_hegge
                  Badcaps Legend
                  • Sep 2009
                  • 5219
                  • Australia
                  #5
                  Re: Antec SB350 ...whining...

                  I've recapped several antecs which continued to whine, even after replacing the 22uF 50V cap on the 5sb. The only way to fix it seems to be to replace every single tiny cap in there.

                  One cap which I've sometimes had trouble finding a replacement for is a 0.1uF 50V (Panny FC don't go that low in capacitance). I usually replace it with a 0.1uF ceramic cap.
                  Last edited by c_hegge; 01-01-2013, 06:49 PM.
                  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

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: Antec SB350 ...whining...

                      If it's a 0.1uF 50V, it's hardly going to need to be low ESR...
                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

                        • Behemot
                          Badcaps Legend
                          • Dec 2009
                          • 4845
                          • CZ
                          #7
                          Re: Antec SB350 ...whining...

                          Originally posted by c_hegge
                          I've recapped several antecs which continued to whine, even after replacing the 22uF 50V cap on the 5sb. The only way to fix it seems to be to replace every single tiny cap in there.

                          One cap which I've sometimes had trouble finding a replacement for is a 0.1uF 50V (Panny FC don't go that low in capacitance). I usually replace it with a 0.1uF ceramic cap.
                          Last time taking from Digi-Key I got 100 pcs of each Nichicon VZ from 0,1 uF all the way to 47 uF just because if this
                          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

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK
                              #8
                              Re: Antec SB350 ...whining...

                              But, a 0.1uF cap is probably going to have a 10~20 ohm ESR, and very low ripple. Even the worst CapXon would be fine there. Not that I like that, but...
                              Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                              For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                Comment

                                • Behemot
                                  Badcaps Legend
                                  • Dec 2009
                                  • 4845
                                  • CZ
                                  #9
                                  Re: Antec SB350 ...whining...

                                  Almost 40 actually But still, I know I can relly on it. Now can you say that about crapxon?
                                  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

                                    • tom66
                                      EVs Rule
                                      • Apr 2011
                                      • 32560
                                      • UK
                                      #10
                                      Re: Antec SB350 ...whining...

                                      I'm pretty sure CapXon have nailed down making general purpose caps... just about every capacitor manufacturer in the world has. Low-ESR involves using better electrolytic chemicals and purer foil. I can buy ceramic 0.1uF 50V through hole caps for 0.3p each in 200 quantity packages, and in 0603 SMD packages I can get them for less than 0.1p each.
                                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                        Comment

                                        • Behemot
                                          Badcaps Legend
                                          • Dec 2009
                                          • 4845
                                          • CZ
                                          #11
                                          Re: Antec SB350 ...whining...

                                          And how much costs you crapxon lytic? I got VZs for 0,1 USD a piece.
                                          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

                                            • eccerr0r
                                              Solder Sloth
                                              • Nov 2012
                                              • 8703
                                              • USA
                                              #12
                                              Re: Antec SB350 ...whining...

                                              Well I finally got around to taking the Smartblue out and to my surprise this is an SL350. And it uses a UC3844 controller, not a KA7500C -- so it's related to the SP300 not the SP400 that I thought!!! However the 5VSB is the same as pretty much all the CWT's...

                                              Bad Capacitor hunting time... and it's still full of fuhjyyu's. And one Teapo. And two Capxon's...

                                              Just the Fuhjyyus appear to have pressurized and leaking...

                                              And a new observation: Yay I get 6.2V out of 5VSB from this PSU... Hello motherboard killer!
                                              Last edited by eccerr0r; 01-05-2013, 02:17 PM.

                                                Comment

                                                • eccerr0r
                                                  Solder Sloth
                                                  • Nov 2012
                                                  • 8703
                                                  • USA
                                                  #13
                                                  Re: Antec SB350 ...whining...

                                                  Replaced C8 (47uF 25V) and +5VSB is now back down to 5VDC.
                                                  C8's ESR was pretty bad.

                                                  I'll have to replace the output caps some other time but for now they'll have to do. The ripple on the +12V line is also really bad... but it'll have to wait...

                                                  Attached is a picture of my 'scope and time for you all to say *ouch* ... Yes that's like 0.7V ripple at about 70KHz is it? That's weird, didn't think these UC3844's go that fast...
                                                  Attached Files
                                                  Last edited by eccerr0r; 01-05-2013, 06:39 PM.

                                                    Comment

                                                    • tom66
                                                      EVs Rule
                                                      • Apr 2011
                                                      • 32560
                                                      • UK
                                                      #14
                                                      Re: Antec SB350 ...whining...

                                                      Originally posted by Behemot
                                                      And how much costs you crapxon lytic? I got VZs for 0,1 USD a piece.
                                                      Well ceramics are $0.001~$0.003.
                                                      Crappy 0.47uF (closest I can find) available for $0.013 in 1000qty.
                                                      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                                      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                                        Comment

                                                        • Behemot
                                                          Badcaps Legend
                                                          • Dec 2009
                                                          • 4845
                                                          • CZ
                                                          #15
                                                          Re: Antec SB350 ...whining...

                                                          Nichicon VZ 0.06090 USD in 1000 pcs…and I can bet on that being able to handle more than some crap.
                                                          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

                                                            • mockingbird
                                                              Badcaps Legend
                                                              • Dec 2008
                                                              • 5484
                                                              • -
                                                              #16
                                                              Re: Antec SB350 ...whining...

                                                              Last time taking from Digi-Key I got 100 pcs of each Nichicon VZ from 0,1 uF all the way to 47 uF just because if this
                                                              Don't use Nichicon VR or VZ in repairs. These are not reliable series, in my opinion.

                                                                Comment

                                                                • Behemot
                                                                  Badcaps Legend
                                                                  • Dec 2009
                                                                  • 4845
                                                                  • CZ
                                                                  #17
                                                                  Re: Antec SB350 ...whining...

                                                                  Why not? They are general purpose, I use them instead of chinese GP caps. Many times low-ESR variants are not suitable.
                                                                  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

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