Macbook 820-3115 The keys "ASDFGHJKL" do not work

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • mattpd
    Badcaps Veteran
    • Oct 2012
    • 301
    • USA

    #1

    Macbook 820-3115 The keys "ASDFGHJKL" do not work

    Macbook was originally stepped on and bent. Case and KB was replaced, but ASDFGHJKL keys do not work. I tried another brand new KB and I have the same problem.

    I assume a broken trace or solder joint since it was stepped on.

    But every pin on the KB connector has continuity to U5701. Triple checked.

    Is there anything else other than KB connector and U5701 I should be looking at?
  • mielta
    Badcaps Veteran
    • Apr 2015
    • 368
    • Germany

    #2
    Re: Macbook 820-3115 The keys "ASDFGHJKL" do not work

    Hi
    I Think U5701 is defect

    Comment

    • mattpd
      Badcaps Veteran
      • Oct 2012
      • 301
      • USA

      #3
      Re: Macbook 820-3115 The keys "ASDFGHJKL" do not work

      Originally posted by mielta
      Hi
      I Think U5701 is defect
      Ok thanks. I will try to swap.

      Comment

      Related Topics

      Collapse

      • astroboypaul
        Macbook A1932 Some Keys Not Working
        by astroboypaul
        Macbook A1932 had completely dead keyboard. I found liquid damage on circuitry on keyboard itself, and repaired it by replacing what i think was a 10k 0201 resistor (here's my post requesting schematic for keyboard circuitry where I included a photo of the resistor: https://www.badcaps.net/forum/troubl...ic-820-01294-a)
        Now most of the keyboard works and I can login, but the following keys don't work: Delete, "/', left...
        06-10-2024, 05:32 AM
      • envym
        MacBook Pro 2018 with Activation Lock
        by envym
        Hi everyone!

        I have a 2018 MacBook Pro (with Sequoia OS) that I've been using for years with no problem. I recently received an M2 MacBook Pro so I'm mostly using it and not the 2018 one, but since a friend of mine needs a computer, I thought I could restore my 2018 and give it brand-new-like to my friend.

        I tried using the built-in tool to restore the MacBook (Settings > General > Transfer or restore > Delete) but it got stuck when trying to remove the Find Device configuration (it asked me for the password for my old Apple ID -now I use the same account but...
        06-27-2025, 08:54 AM
      • Flasman90
        Macbook Pro DFU Restore Issues
        by Flasman90
        I have a 2020 Macbook Pro A2289 and after many attempts managed to get it into DFU mode, using my older 2017 A1706 Macbook Pro (Running Ventura 13.7.8). However, when attempting 'Restore', it fails at step 4 of 4, showing the following error:

        - "The operation couldn’t be completed. (AMRestoreErrorDomain error -1 - Failed to handle message type StatusMsg (Generic error)) [AMRestoreErrorDomain – 0xA (10)]
        - "The system cannot be restored on this device. Failed to create new state machine for restore [com.apple.MobileDevice.MobileRestore - 0xFB1 (4017)]
        ...
        08-30-2025, 10:27 AM
      • SarcasticOP
        General question about MacBook power rails for repair.
        by SarcasticOP
        I am looking at an A2337 and found this for the order of power rails and what they do. Can this be confirmed before I dive into hunting down power rails that do not exist or are not neccisary?
        • PPBUS_G3H (12.6V-12.8V)
          • This is the main power rail that supplies power to the entire system. Check this rail first, as it must be present for other power rails to work.
        • PP3V42_G3H (3.42V)
          • This power rail is derived from PPBUS_G3H and is used to power the SMC (System Management Controller) and other essential circuits. It should be present if PPBUS_G3H is working correctly.
        • PPVRTC_G3H (3.3V)
          • This
        ...
        12-12-2024, 05:50 PM
      • obelix24
        A2941 Macbook air 15” - 5V 0a
        by obelix24
        I’m working on one macbook air 15” m2 that was water damaged.

        keyboard, lcd, microphone connectors were damaged so i’ve replaced all of them and without screen connected macbook worked fine. Keyboard &trackpad and also lid sensor was working fine.

        i’ve put macbook in shelf and order new screen so i can fully repair it.

        Now i got the screen and macbook stays at 5v 0a.

        i’ve tried if it’s not in DFU with another macbook but it’s not detected at all.

        i don’t have schematics so i don’t know where to start can someone help me?...
        03-27-2025, 01:19 PM
      • Loading...
      • No more items.
      Working...