Microsoft Surface Laptop 1868 short

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  • m4a2t0t
    Badcaps Veteran
    • Mar 2013
    • 276
    • USA

    #1

    Microsoft Surface Laptop 1868 short

    Is there a schematic anywhere so I can find the value of the capacitor circled blue in the first picture? There are no more shorts in this area after removing it but still no voltage anywhere on the board.

    I had to replace the battery since it was leaking acid near the bottom. With the old battery it was drawing 0.03A but with the new one its 0.00A

    Thanks for any help
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  • mon2
    Badcaps Legend
    • Dec 2019
    • 13996
    • Canada

    #2
    Review the datasheet for the MPS brand regulator with the AUH topside markings. With no power, measure the resistance from the trace pads to the ic and use the recommended parts from their reference design. Essentially, locate from the reference schematic as to which part is missing.

    https://www.monolithicpower.com/en/d...en/sku/MP2269/

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    • m4a2t0t
      Badcaps Veteran
      • Mar 2013
      • 276
      • USA

      #3
      Sorry im a dodo that was a inductor.

      Since im asking dumb questions I have one more. Can I not test the battery from the p+ and P-? It shows 0.0V and is out of the laptop

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      • m4a2t0t
        Badcaps Veteran
        • Mar 2013
        • 276
        • USA

        #4
        Originally posted by mon2
        Review the datasheet for the MPS brand regulator with the AUH topside markings. With no power, measure the resistance from the trace pads to the ic and use the recommended parts from their reference design. Essentially, locate from the reference schematic as to which part is missing.

        https://www.monolithicpower.com/en/d...en/sku/MP2269/
        Ok thanks Ill check it out

        Comment

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