Dell N4050 short on ground

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  • sasser
    Badcaps Veteran
    • Dec 2012
    • 365
    • Malaysia
    #1

    Dell N4050 short on ground

    hye i got 1 laptop dell inspiron cant power on.

    i touch TPS51125A hot. i check GND on pin 15. i got 19V.

    i attach picture on page 41 TPS2115A. seem like leakage somewhere
    anyone can help me to find what the problem is.
    Attached Files
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    • sasser
      Badcaps Veteran
      • Dec 2012
      • 365
      • Malaysia
      #2
      Re: Dell N4050 short on ground

      i have checked again maybe my mistake i got zero on pin 15 but pin 16 is vin i got 19v. PGOOOD no volt.

      VREG on pin 8 and 17 i got 3v. why this TPS hot when plugin charger ? and cant on with current see on PSU bench 0.1890
      Last edited by sasser; 03-06-2015, 11:46 PM.

        Comment

        • ktmmotocross
          Boardkiller
          • Feb 2014
          • 3627
          • slovakia
          #3
          Re: Dell N4050 short on ground

          o9n pin 17 u must have 5v. check ffor short on coils

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