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Macbook Pro 13'' 2017 A1708 Won't power on with battery connected.

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  • arevut
    Member
    • Mar 2019
    • 18
    • Ukraine
    • Technician
    #41
    Originally posted by mon2

    For a good mosfet, these are low resistance measurements. Carefully, flux and remove this mosfet off the board and test using the same method after the mosfet has cooled down and on your work bench. Confirm if the measurements remain this low or not.
    Hi. I ordered new mosfets and today I replaced old with the new one. And... nothing changed. When I disconnect the battery the voltage in PPBUS_G3H is normalizing to 13V. When I connect the battery it decrease to 11V. Which guy will be the next? May be U7000 (ISL9239
    ​)?

      Comment

      • arevut
        Member
        • Mar 2019
        • 18
        • Ukraine
        • Technician
        #42
        Originally posted by mon2

        For a good mosfet, these are low resistance measurements. Carefully, flux and remove this mosfet off the board and test using the same method after the mosfet has cooled down and on your work bench. Confirm if the measurements remain this low or not.
        source (1-2-3) & drain (5-6-7-8) = 8K vs OL

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