Asus Notebook PC K52F

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  • Timmo6
    New Member
    • Mar 2025
    • 5
    • België

    #1

    Asus Notebook PC K52F

    Hi all,
    I have a problem identifying a particular capacitor which was burnt probably due to a defective AC/DC car adapter when plugged into the cigarettelighter.
    I can only see a burnt capacitor and a burnt Mosfet on the mainboard. In Boardviewer the capacitor is marked as C4509 but without any info (Pin1ground and Pin2 AC_BAT_SYS), hence the question by which value should I replace it. The Mosfet is a P-Mosfet AP4835GM SO-8 APEC.
    The mainboard is a K52F Rev2.2, I found the boardfile on this forum.
    Thanks for any help as I am a beginner in this subject.
  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #2
    You can try with a 10uF/25V cpacitor

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    • Timmo6
      New Member
      • Mar 2025
      • 5
      • België

      #3
      Thanks
      I took a picture, does it look like a capacitor of that range?

      Comment

      • mon2
        Badcaps Legend
        • Dec 2019
        • 14030
        • Canada

        #4
        No. Search for J8803 and J8804. Are they showing this part of the board? Post the area of the board view for a review.

        Comment

        • Timmo6
          New Member
          • Mar 2025
          • 5
          • België

          #5
          you are right, it was my mistake, the component is a current sense resistor
          I will replace this one and the burnt Mosfet and reply back

          Comment

          • Timmo6
            New Member
            • Mar 2025
            • 5
            • België

            #6
            Ok I noticed a burnt mosfet and the current sense resistor looked bad as well. However i could not find a new resistor of this type and decided to test the component.
            i was surprised to detect that the resistor was good and thus i only replaced the mosfet. I restarted the laptop and everything worked again as it should.

            Comment

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