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sony vaio PCG-7141L NO POWER

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    #21
    Re: sony vaio PCG-7141L NO POWER

    pq25 1,2,3,4 all at 19.9v
    Vgs is 0v, mosfet is not turn on.
    my guess could be a faulty mosfet or pc136.
    check if pin 4 and 1,2,3 are shorted

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      #22
      Re: sony vaio PCG-7141L NO POWER

      check the short circuit with ground with oham range on pq25 drain (5678)...and also remove pc25 and check ?
      Last edited by smali; 02-22-2017, 07:01 AM.

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        #23
        Re: sony vaio PCG-7141L NO POWER

        thanks to all the response ill check what you advise and feedback soon

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          #24
          Re: sony vaio PCG-7141L NO POWER

          Originally posted by cyberhack View Post
          Or build DIY PSU bench supply that could controlling output limit of voltage and current.

          Our friend Kazia, He already managed to build PSU using PSU2 schema
          Attached Files

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