Macbook A1706 works perfectly but no data on USB C

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  • capon5153
    Member
    • Apr 2019
    • 20
    • Belgium
    #1

    Macbook A1706 works perfectly but no data on USB C

    hello,
    so i have an macbook pro A1706, motherboard 820-00923, everything works and it does charge without a problem but when i plug anything to the usb c it doesnt do anything, it doesnt give 5V on usb drive or any other peripheral,

    i have opened the macbook and i can see some little corrosion on C7601 and C6950,, i have cleaned it and i measure 15v on C6950 PPVBAT_G3H_CONN
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13835
      • Canada
      #2
      Review the resistance to ground on PPBUS_HS_OTH5V (with no power to the board of course).

      What is the voltage to ground of PPBUS_HS_OTH5V ?

      Next review U7650 which uses the above rail to create PP5V_S4.

      Measure the voltage to ground of PP5V_S4. If this rail is missing, be sure the PPBUS_HS_OTH5V ​is present and also the enable pin for this rail is active = P5VS4_EN.

      Other rails to measure are:

      PP5V_S4_T_USBC
      PP5V_S4_X_USBC

        Comment

        • capon5153
          Member
          • Apr 2019
          • 20
          • Belgium
          #3
          hi,

          i measure 15.7V on PPBUS_HS_OTH5V on the C7600

          1.348Mohm on C7601 for PPBUS_HS_OTH5V

          no visible damage on or around U7650

          PP5V_S4 is 5.11V

          PP5V_S4_T_USBC between 0V and 0.13V

          PP5V_S4_X_USBC​ 0V

            Comment

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