MBA13 M3 2024 A3113 EMC8611 820-03285 No Trackpad No Keyboard (water damaged)

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • guzq
    Senior Member
    • May 2017
    • 54
    • Indonesia

    #1

    MBA13 M3 2024 A3113 EMC8611 820-03285 No Trackpad No Keyboard (water damaged)

    Hi Guys,

    This Mac come with dead issues (severe water damage), now it’s turning ON except Trackpad and Keyboard not working.

    Already check and write down DM for JT400 and JT201 don’t find any abnormal value (I don’t have unit for compare).

    Already try,
    • Replacing Trackpad Flex Cable
    • Replacing New Trackpad
    • Replacing Little Board (Daughter Board)
    • Try using New Keyboard
    Still no change at all, Trackpad and Keyboard not working.

    So I check “Power Load Switches” and this is all the numbers,
    UC830 > 1 = 3.297V ; 3 =1.757V ; 4 = 3.798V
    UC840 > 1 = 0V ; 2 = 1.878V ; 3/4 = 5.187V ; 5 = 5.187V ; 6 = 0V ; 7 = 0V
    UC850 > 1 = 0V ; 2 = 1.796V ; 3/4 =12.56V ; 5 = 12.56V ; 6 = 0V ; 7 = 0V
    UC860 > 1 = 0V ; 2 = 0V ; 4 = 0V ; 5 = 1.798V
    UC870 > 1 = 1.801V ; 2 = 1.798V ; 4 = 1.797V ; 5 = 1.798V

    Now I hit dead-wall what should I check next ?



Related Topics

Collapse

  • ronaldopdias
    A3113 corrosion to LAS = No keyboard, yet screen and trackpad work fine
    by ronaldopdias
    Hi All.

    I have a A3113 MacBook Air 13" (M3) that had minor liquid damage. The screen remains on if the lid is closed, the keyboard doesn't work, but trackpad and Touch ID does.​
    The LAS was corroded, but I have tested it on an A2681 (M2) and it functions fine. Anyway, I ordered a new one and replaced it and calibrated it with Apple.

    I have checked the main voltages going to the daughterboard and they are present. Diode mode reading on the LAS line which goes direct to the SoC is also correct, no short.

    So then I replaced the daughterboard, and...
    06-16-2025, 03:12 AM
  • rynr
    MacBook Air (13-inch, M3, 2024) Model A3113 Schematics & Boardview
    by rynr
    Hi friends,

    can somebody provide schematics and boardview for A3113?

    Thanks in advance
    09-28-2024, 04:16 AM
  • No Lan
    [Macbook pro A1708] [Boot loop] [Trackpad ?]
    by No Lan
    Hey everyone,

    Usually, I'm not the type to ask for help, but this time, I'm calling on your wisdom and expertise I've seen what this community can do, so I'm pretty sure you guys can help me out.

    Here's the deal: I noticed my MacBook got stuck in a boot loop. After opening it up and doing some initial troubleshooting, I found that the boot loop stops only when the trackpad is unplugged.

    Now, just so you know, the trackpad actually works — I tested it with another motherboard and it's all good. Same for the cable, no issues there. The problem is only...
    05-24-2025, 03:09 PM
  • iMuhtaseb
    A2681 Keyboard, trackpad and sleep?!
    by iMuhtaseb
    Wow it's been a while since I posted!

    This is a weird case, it has a history of liquid spill a year ago but customer did not want to replace neither trackpad or keyboard.. fast forward for today:

    A2681 turns on but not trackpad or keyboard feedback (or external keyboard and mouse) and then after a minute or so the Mac sleeps..

    It's a NOT a sleep sensor or trackpad or keyboard or daughterboard or anything else (I replaced all those); it's the logic board..

    Tested another locked logic board on customer's top case and it posted with keyboard and...
    05-22-2025, 09:59 AM
  • nicocorradini
    820-00426 (A1398 2015) no trackpad, no keyboard.
    by nicocorradini
    Hi! I have this 2015 A1398 with 820-00426 board that's driving me crazy. It originally came because of charging problems (MagSafe Board roasted, also MagSafe cable, etc. After disassembly, clean and assembly, my assistant (literally) broke FL803 and other componentes. Obviously, no screen or backlight. After replacing them, and also the LVDS connector, and LVDS flex on the screen, the board started fine, charges, chimes, shows Apple Logo, but surprise: no more trackpad or keyboard.

    Important notes:
    -Click works, so, trackpad is alive.
    -Already tried with another trackpad,...
    03-04-2025, 07:01 PM
  • Loading...
  • No more items.
Working...