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D-Link DES-1016D not working

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    D-Link DES-1016D not working

    It has a 3.3V power supply.

    There was a bulged Teapo 1000uF 10V and 1 22uF 50V Teapo that had a little higher esr than normal. I replaced them with 22uF 50V Rubycon YXF and 1500uF 6.3V Nippon-Chemicon KZE (this is the closest grade cap I had in stock).

    The power supply is working, but when it is connected with the controller board it refuses to start. The same happens with any computer power supply that I connected. They act like shorted.

    So there must be a problem with the hub controller... Is it fixable? Looking it I can't see many parts that can be tested with a multimeter and changed if they are found bad....
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    #2
    Re: D-Link DES-1016D not working

    The RTL8316 is 3.3v only. The RTL8208 is 3.3v and 2.5v. 2.5v is controlled by the RTL8208 and requires a PNP transistor which must be Q1 and Q2. Each base should connect to pin 116 of a RTL8208. I don't know if any of that will help.

    I'd just hook a bench supply up and slowly turn the voltage up to 3.3v until something heats up. If there's a short then 5A will be drawn at about 0.3v and one of the chips will heat up.
    sig files are for morons

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      #3
      Re: D-Link DES-1016D not working

      I tested Q1, Q2 and U3 but none was found shorted or open. The only solution now could be the bench supply... but I don't have one.

      But even if I had I don't know how easy it would be to change one of the RTL ICs or the others.

      Anyway thank you for your help!

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        #4
        Re: D-Link DES-1016D not working

        I usually don't change those big chips even though I can. I just like to be certain where the problem is so I can quit fussing with it.
        sig files are for morons

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          #5
          Re: D-Link DES-1016D not working

          Have you checked those diodes especially the one closest to the power conection? Its usually there to shunt overvoltage to ground but can short circuit to ground.

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            #6
            Re: D-Link DES-1016D not working

            They have no white bar or any rating. I don't think they are diodes...

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              #7
              Re: D-Link DES-1016D not working

              hello guys i have proplem at this switch
              can anyone help me please on board powersupply mov1 i dont know this

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