No internal sound device after liquid damaged, MacBook Pro A1398 2013

Discussion in 'MacBook Pro' started by hydepark2008, Nov 12, 2015.

  1. hydepark2008, Nov 12, 2015
    Last edited: Nov 15, 2015

    hydepark2008 macrumors newbie

    Joined:
    Nov 11, 2015
    Location:
    Chicago
    #1
    This is a Macbook Pro A1398 2013 laptop. It had no power up by liquid damage.
    Replaced its keyboard and cleaned motherboard entirely, it is back to work for most parts, except sound.

    There is no an internal sound device and no sound with internal speakers and an external ear phone. If plug in an external USB sound adapter, able to get normal sound and the USB sound device shows in Sound Preference window.

    Is there anyway to fix the problem by configure or reset software/OS?
    If it is a hardware problem, is there anyway to fix it, such as replace the audio chip or relative components? Motherboard is 820-3332A. Any link to a schematics for 820-3332A?
     
  2. hydepark2008 thread starter macrumors newbie

    Joined:
    Nov 11, 2015
    Location:
    Chicago

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