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    Fuyjju Bad Caps

    Hi, I found some bunk 1000uF 10V Fuyjju caps in my Flex ATX power supply. Sorry no photos... Leaking electrolyte, typical symptoms of intermittent system failure. Unfortunately I tweaked around too much before I realized it was the caps, now (after recapping) I get an intermittent buzzing that sounds like either a bad transformer or perhaps a blown transistor. However I still get power, it's just not sufficient voltage or it's unstable enough for the system to refuse to get past POST. I have no test equipment so I am shooting in the dark. Anybody have any ideas?

    Thx
    Bug

    #2
    Re: Fuyjju Bad Caps

    you are not alone with the Fuhjyyu
    http://www.dslreports.com/forum/remark,14116577
    we had an old post with some crazy pics of Fuhjyyu fails also but were hosted offsite and got lost.

    there are a few guys here who can assist. hopefully they will pass by this weekend.
    capacitor lab yachtmati techmati

    Comment


      #3
      Re: Fuyjju Bad Caps

      Wondered when this would come up - Antec use Fuhjyyu in their psus. However they don't make FlexATX to my knowledge... You're probably out of luck, bug. Hard to find FlexATX psus nowadays...
      The great capacitor showdown!

      Comment


        #4
        Re: Fuyjju Bad Caps

        Just did a cap inspection on my Antec True 430 power supply approximately 10 minutes ago and the caps appeared to be OK.
        ASRock B550 PG Velocita

        Ryzen 9 "Vermeer" 5900X

        32 GB G.Skill RipJaws V F4-3200C16D-32GVR

        Arc A770 16 GB

        eVGA Supernova G3 750W

        Western Digital Black SN850 1TB NVMe SSD

        Alienware AW3423DWF OLED




        "¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo

        "There's nothing more unattractive than a chick smoking a cigarette" -Topcat

        "Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat

        "did I see a chair fly? I think I did! Time for popcorn!" -ratdude747

        Comment


          #5
          Re: Fuyjju Bad Caps

          How old is your True430?
          The great capacitor showdown!

          Comment


            #6
            Re: Fuyjju Bad Caps

            yeh i got several chieftecs (same as antec), all teapo etc no probs yet
            capacitor lab yachtmati techmati

            Comment


              #7
              Re: Fuyjju Bad Caps

              Originally posted by Chris1992
              How old is your True430?
              I purchased it on October 23, 2003.
              ASRock B550 PG Velocita

              Ryzen 9 "Vermeer" 5900X

              32 GB G.Skill RipJaws V F4-3200C16D-32GVR

              Arc A770 16 GB

              eVGA Supernova G3 750W

              Western Digital Black SN850 1TB NVMe SSD

              Alienware AW3423DWF OLED




              "¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr!" -Mí mismo

              "There's nothing more unattractive than a chick smoking a cigarette" -Topcat

              "Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat

              "did I see a chair fly? I think I did! Time for popcorn!" -ratdude747

              Comment


                #8
                Re: Fuyjju Bad Caps

                Hmm. So Antec/Chieftec use both Teapo and Fuhjyyu.
                The great capacitor showdown!

                Comment


                  #9
                  Re: Fuyjju Bad Caps

                  is anybody gonna reply to the original question?
                  capacitor lab yachtmati techmati

                  Comment


                    #10
                    Re: Fuyjju Bad Caps

                    the bad caps cause excessive ripple and noise that makes the system unstable.
                    a recap or replacement psu should fix it.the buzzing will be fixed too.it is due to the pwm chip seeing its own spikes from the reference on the output.
                    that is it samples usually +5 and if it is noisy the psu will hiss,fizz buzz,ect

                    Comment


                      #11
                      Re: Fuyjju Bad Caps

                      GREAT forum, thanks for the help. I forgot to mention I only replaced 2 out of 4 caps, which were the obviously bad caps (I guess the others could still be fried but not exhibiting symptoms). Problem was, the replacement caps are 3 times the size of the originals- this makes for some difficult squeezing things into the enclosure. Also some of the new caps are almost an inch off the board, however I did insulate the leads to prevent shorts. I figured if I blew a power transistor or transformer forget it, but if the buzzing could be fixed by recapping the other 2 I will definitely try that. I should have a report back in a few days if anybody is interested. I will submit a pic of the ridiculously stuffed enclosure...

                      Finally, my PSU is ACHME Flex ATX AM630BS20S

                      Also, looks like this character did exactly what I been trying to do:

                      http://forums.sudhian.com/messagevie...keyword1=achme

                      Comment


                        #12
                        Re: Fuyjju Bad Caps

                        fwiw i get tons of swi prototrak heads in for overhaul.
                        the +5 +12 in the psu on the m2 has fujjiu caps.even if not vented they are always high esr.
                        easy to spot as you get artifacts when the logo comes sliding on startup or you select dro mode ,ect.
                        started seeing bad ones in pc psu's 5 years ago.

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