Macbook Pro 13 2019 A1989 touchbar cable capacitor value

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  • flusher
    Senior Member
    • Oct 2015
    • 58
    • United Kingdom
    #1

    Macbook Pro 13 2019 A1989 touchbar cable capacitor value

    Got this waterdamaged where oxidation happened under shield on touchbar cable. It showed image but no touch. After I cleaned and resoldered everything except ic (it is sealed anyway) i am getting touches however i find it a bit hit n miss where it works but sometimes missing dragging. Tapping seems fine. I think it might be something to do with this big cap which might be LDO or something. I placed 10v 2.2uF cap there. Anyone could measure it from good/dead touch bar lying around ?
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    • mon2
      Badcaps Legend
      • Dec 2019
      • 14683
      • Canada
      #2
      The same Broadcom controller (BCM5976 aka Cumulus) is present on assorted Apple products including the iPAD AIR 2.

      From the AIR 2 schematics, perhaps you can figure out the value of this mystery capacitor.

      Click image for larger version Name: cumulus.png Views: 127 Size: 262.5 KB ID: 3692695

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