a2141 820-20237-A stuck on apple logo no trackpad or keyboard reaction not even external

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • larrysito111
    Member
    • Feb 2023
    • 41
    • uk
    #1

    a2141 820-20237-A stuck on apple logo no trackpad or keyboard reaction not even external

    it was liquid damage and after cleaning i got to this stage

    i tested external screen that is ok

    but external mice nor kb

    so i m asking if anyone had similar issue so no time waste

    or if not then just where to start

    yest it is charging and ruing from battery and running same as on internal LCD and on external LCD

    kb got the 1.8v and 3v3 present

    there was liquid damage only on the area of the GPU wing just till the speaker amps

    any ideas please

    thank you ....
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • eurowill
      a2141 820-01700 internal display not working / external works
      by eurowill
      Hey ya'll this is my first post on here. I recently aquired a used/broken 2019 mbp 16 a2141 with the 820-01700 board. Seller told me that the laptop needed a new lcd. However upon doing some troubleshooting i found out the lcd is fine.

      Laptop boots like a normal, plays chime, touchbar lights up however there is no image on the internal lcd. If i connect and external monitor while its already on, nothing happens and no image is displayed on external. However if i restart or boot the machine while its plugged in, the external then works and a backlight is now visible on the laptop....
      07-23-2024, 10:06 AM
    • Skrndelj
      Apple Macbook Air M1 A2337 Trackpad problem
      by Skrndelj
      Hello all,

      I am repairing a Macbook A2337 and i have a problem
      The Macbook is stuck in restore as someone before me tried a DFU restore and bricked the device, now i can't do a restore as AC2 throws error 1 which is related to the trackpad.
      When i turn on the device i get the trackpad click for a few moments and then nothing, i tried 7 trackpads and 7 trackpad flats, i know all 7 are functioning okay, especially one as i use it for testing and DFU restore.
      I inspected the whole board and everything seems fine.
      Can anyone help me as i didn't fiddle with trackpad...
      06-11-2024, 04:26 AM
    • a_p3rson
      Apple Watch Charging Controller Schematics / Boardview - 820-02601
      by a_p3rson
      Hi there,

      I'm looking for anyone who might have information on Apple's embedded Apple Watch charging daughterboard, ID 820-02601. This is currently used by Anker in their Apple Watch charging products, but likely by other Apple partner brands as well.

      You can see the board referenced in ChargerLab's teardown of the Anker Y1811 3-in-1 MagSafe cube - they discuss the "Apple Watch wireless charging circuit" about 2/3rds down the page. It's not pictured, but the board ID reads 820-02601-A, which sure sounds like Apple.
      This daughterboard uses an interesting...
      04-21-2025, 11:41 PM
    • Document Archive
      Apple MacBook Pro A2141 X970 820-01700 Schematic & Board View
      by Document Archive
      Apple MacBook Pro A2141 X970 820-01700 Schematic & Board View...
      10-02-2024, 02:57 PM
    • djty
      MBP 2013 15" 820-3787 no keyboard, no touchpad
      by djty
      Device: Laptop
      Brand: Apple
      Model: MacBook Pro
      Board number: 820-3787-06
      Problem:
      • no keyboard, no trackpad
      • Fans Spinning fast
      Hello everyone. The MacBook pro late 2013 keyboard is not responses even when trackpad is disconnected.
      no reaction on KB, only power button andd ctrl alt shift, which are on keyboard connectore are separately on the KB pinout KB backlight is present the PP3V3_S4 and PP3V42_G3H one keyboard connector J4813 are present on keyboard
      external USB keyboard works Should touchpad be connected to motherboard for KB to be working?
      ...
      03-17-2025, 11:03 AM
    • Loading...
    • No more items.
    Working...