Fujitsu Siemens Myrica VQ40-2 PSU bad

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  • PowerAmpFreak
    Badcaps Veteran
    • Feb 2010
    • 982
    • Sweden

    #1

    Fujitsu Siemens Myrica VQ40-2 PSU bad

    Hello
    it seems this Myrica has a bad powersupply.
    Only STBY +5V is alive and does not come on when jumping PS_ON.

    Advice? Schematics?
    Attached Files
  • newtothis
    Badcaps Legend
    • Mar 2013
    • 1556
    • england

    #2
    Re: Fujitsu Siemens Myrica VQ40-2 PSU bad

    P/N of PSU?

    Comment

    • PowerAmpFreak
      Badcaps Veteran
      • Feb 2010
      • 982
      • Sweden

      #3
      Re: Fujitsu Siemens Myrica VQ40-2 PSU bad

      Pa-2005b

      Comment

      • PowerAmpFreak
        Badcaps Veteran
        • Feb 2010
        • 982
        • Sweden

        #4
        Re: Fujitsu Siemens Myrica VQ40-2 PSU bad

        I noticed the black epoxy incapsulated PWM module gets very varm directly after start up. So this will be a module swap if I can found one.

        Comment

        • PowerAmpFreak
          Badcaps Veteran
          • Feb 2010
          • 982
          • Sweden

          #5
          Re: Fujitsu Siemens Myrica VQ40-2 PSU bad

          Hello everyone.
          I am interested to buy this powersupply if you've got it.
          I only need the black incapsulated module called "CMP-PWM" , driver for main DC/DC.

          Let me know if you have something to sell!

          Part-number for complete PSU: AP-2005B
          Last edited by PowerAmpFreak; 06-16-2015, 10:59 AM.

          Comment

          • ReeceyBurger123
            Never Give Up !
            • May 2014
            • 7325
            • Britain

            #6
            Re: Fujitsu Siemens Myrica VQ40-2 PSU bad

            Are you sure its the PWM, have you checked the caps on esr I noticed that there are green samxon gf caps which are known to fail with out bulging ?
            Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

            https://www.facebook.com/Telford-Tel...7894576335359/

            Comment

            • PowerAmpFreak
              Badcaps Veteran
              • Feb 2010
              • 982
              • Sweden

              #7
              Re: Fujitsu Siemens Myrica VQ40-2 PSU bad

              The CMP-PWM module gets warm (more than I would expect) directly after power on. It also drop too much voltage across the 47ohm series resistor feeding it.
              I can't think of anything else than a CMP-PWM failure really.

              Comment

              • PowerAmpFreak
                Badcaps Veteran
                • Feb 2010
                • 982
                • Sweden

                #8
                Re: Fujitsu Siemens Myrica VQ40-2 PSU bad

                Anyone having this PSU to sell?
                Give me a PM please!

                P/N: AP-2005B

                Comment

                • krivoy61007
                  New Member
                  • Dec 2014
                  • 1
                  • Украина

                  #9
                  Re: Fujitsu Siemens Myrica VQ40-2 PSU bad

                  хотел бы найти схему этого блока питания...

                  Comment

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