MacBook Pro 15" A1707, 2016 - No Display and Touch Bar

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  • Hauke
    Senior Member
    • Jan 2017
    • 78
    • Germany
    #1

    MacBook Pro 15" A1707, 2016 - No Display and Touch Bar

    Hi, I am asking for a little troubleshooting advice.

    The laptop seems to boot up fine. Caps lock is working, the touch pad has haptic feedback, and even the "charger plugged"-sound is present.
    Power consumption is about 15-30W at boot and idles at about 20W.

    Unfortunately, the display and the touch bar are completely black (No signal and no backlight).
    I don't get a signal on an external USB-C display either. Also not in safe mode.
    I noticed that only the left fan (from the bottom side, hinge on top) seems to spin up. I think this might be the CPU fan.

    I have not worked on the motherboard so far.

    Is the touch bar linked to the GPU?
    Has anyone experienced this issue so far and has some advice?

    Thank you very much!
    Hauke


    Tags: None
    • reformatt
      Badcaps Legend
      • Feb 2020
      • 1431
      • Australia
      #2
      Touchbar will only work once it's booted into MAC OS. I wouldn't bother with that till you establish why the display isn't working. It should work on USB-C with the lid shut in clamshell mode at least.

      Display could be dead, or liquid damage in the connector from motherboard to the display (very common issue). That usually destroys the display MUX IC, but unlike the 13" models, this protects the CPU display data lines from being damaged.

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