I need help for my dell not turn on...

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  • arber1232
    Badcaps Veteran
    • Dec 2019
    • 368
    • Albania
    #1

    I need help for my dell not turn on...

    Hello everyone, today I need your help. I have a dell inspiron laptop 3521 La-9104P .. I opened the laptop and I saw that it had made mass 19v with gnd and burn the place .. the laptop does not turn on I measured some voltages in this chip and I have present (Vin = 19v, Gnd, Vreg 5 = 3.5 v ... Vreg 3 = 4.0 v) and I see I am missing + 3v ALWP and +5 v ALWP .. Please can you help me
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    • emestee
      Badcaps Veteran
      • Dec 2019
      • 228
      • Bulgaria
      #2
      Re: I need help for my dell not turn on...

      This isnt enough. First you need to replace all the burned components (should not power the board before it), then do all measures for resistances on all power rails, and then repair what comes next.

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        • arber1232
          Badcaps Veteran
          • Dec 2019
          • 368
          • Albania
          #3
          Re: I need help for my dell not turn on...

          Originally posted by emestee
          This isnt enough. First you need to replace all the burned components (should not power the board before it), then do all measures for resistances on all power rails, and then repair what comes next.
          the burned is in this chip in tps 51125 pin 14 15.. vin and gnd

            Comment

            • emestee
              Badcaps Veteran
              • Dec 2019
              • 228
              • Bulgaria
              #4
              Re: I need help for my dell not turn on...

              Replace it then.

                Comment

                • arber1232
                  Badcaps Veteran
                  • Dec 2019
                  • 368
                  • Albania
                  #5
                  Re: I need help for my dell not turn on...

                  Originally posted by emestee
                  Replace it then.
                  i replace and is a same problem

                    Comment

                    • emestee
                      Badcaps Veteran
                      • Dec 2019
                      • 228
                      • Bulgaria
                      #6
                      Re: I need help for my dell not turn on...

                      Originally posted by arber1232
                      i replace and is a same problem
                      Then test rail resistances, and start looking into the elements around the chip you replaced.

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