MACBOOK A2337 NO POWER

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • madjid911
    Badcaps Veteran
    • Dec 2016
    • 387
    • France
    #1

    MACBOOK A2337 NO POWER

    Hello, I'm trying to repair my MacBook Air A2337 820-0216-A, which does not start. It's stuck on 5V, the motherboard is not drawing power, and there's no liquid damage or shorts found.

    Since I had PPBUS_AON but not PP1V8_AON, I replaced the U710 PMIC chip with one from a working donor motherboard (iCloud). The result is the same. Here are the measurement :

    3V8_AON : 3V8
    PPBUS_AON : 12V28
    PP3V3_S2_UPC : 0V5
    PP3V3_S2 : 0V
    PP1V8_AON : 0V no short
    PP3V8_AON :3V8
    P3V8AON_PWR_EN_R : 5V
    the trackpad does not click

    I can't tell if the PMIC is receiving the activation signal. Maybe the M1 SoC is dead?

    Thanks for your help, I'm just a beginner.
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14076
      • Canada
      #2
      MacBook Air A2337 820-02016-A

      Remove all power. Meter in resistance mode. Measure the resistance to ground of PP3V3_S2_UPC. Post the measurement.

        Comment

        • madjid911
          Badcaps Veteran
          • Dec 2016
          • 387
          • France
          #3
          thank you for your help

          PP3V3_S2_UPCP : ​ Between 150 KOMHS and 6 MOHMS Unstable value

            Comment

            • mon2
              Badcaps Legend
              • Dec 2019
              • 14076
              • Canada
              #4
              This rail is not shorted but also not enabled.

              Check if the PP1V2_S2 rail created by U8100 is present.

              Your case may be similar to this one:

              https://boards.rossmanngroup.com/thr...02020-a.63479/

                Comment

                • madjid911
                  Badcaps Veteran
                  • Dec 2016
                  • 387
                  • France
                  #5
                  Originally posted by mon2
                  This rail is not shorted but also not enabled.

                  Check if the PP1V2_S2 rail created by U8100 is present.

                  Your case may be similar to this one:

                  https://boards.rossmanngroup.com/thr...02020-a.63479/
                  PP1V2_S2 0v 21KOHMS
                  On Roussman's website it says to change U8100 but it's a big component that I wouldn't be able to replace.

                    Comment

                    Previous template Next

                    Related Topics

                    Collapse
                    • rounin
                      MacBook Air A2337 (820-02016) USB-C Port Issue – Only Works in One Orientation (CC Line Problem?)
                      by rounin
                      Hi everyone,

                      I'm working on a MacBook Air 2020 (A2337, board 820-02016) and running into a strange USB-C issue. I've gone through quite a bit of testing and part replacement, but I'm stuck — hoping someone here can shed some light.

                      🛠 Original Issue
                      The machine initially wouldn't negotiate 20V over USB-C — stuck at 5V.
                      Diagnosis showed PP1V5_UPC0_LDO_CORE shorted to ground.

                      I replaced U3100 (UF400) using a donor board (A2179), and the machine powers on fine now.

                      ⚠️ New Problem: One USB-C Port Only Works in One Orientation...
                      04-19-2025, 01:18 AM
                    • mkdj
                      MacBook Air A2337 (820-02016) - 5V, won't turn on - please help me understand why
                      by mkdj
                      Hello everyone,

                      About me, my goal and the equipment I (don't) have:
                      I am brand new to this forum, and I am eager to learn about repairing laptops. I have an engineer background although I haven't done electronics for a while. I have watched several Youtube videos in the last two months, trying to understand how to diagnose a faulty motherboard. I have a USB-C Amp meter and a classic multi meter. No DC Power Supply to inject voltage, no soldering iron to replace components.

                      About my issue and my goal:
                      A friend of mine has a MacBook Air M1 A2337 that does not...
                      04-03-2025, 08:28 AM
                    • Adogabriel100
                      where to get trusted CD3217. Problem with A2337 Macbook Air
                      by Adogabriel100
                      Hey! As the title says. i don't know if this is the right place to ask but i need to get trusted USB C Controllers (CD3217-CD3215) For macs and dont know where to get them. i dont know if you guys know where is a good place to get it.

                      The thing is that i have a Macbook air A2337 M1 and i dont have a donnor board to get the CD3217. So i try the CD3217 from a A2141 Board and at first, whitout his eprom it does not convert 5v to 20v. then i put the original CD3217 eprom from the A2141 and then the macbook A2337 conver the 5v to 20v but still not turning on. i guess that the CD3217 is...
                      09-06-2024, 12:06 PM
                    • 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
                    • Patrick501
                      Macbook Air A2337 dead at 5V/0,00A
                      by Patrick501
                      Hey,
                      I'm working on a MacBook Air M1. I'm pretty sure the U8100 is not working correctly. But I never had to change it before, so I wanna ask anyone of you guys to confirm (or not confirm) my thoughts on it.

                      USB Tester: 5V / 0,00A
                      PPBUS_AON: 12,3 V
                      PP5v_S2: 0 V no short
                      PP3v3_S2_UPC: 0 V no short
                      PP1v25_S2: 0 V no short
                      PPDCIN_AON_CHGR_R: 5 V
                      no enable signals for the S2 rails by the U8100


                      both CR3217 (UF400, UF500), are supplied by 5V (Fuses FF200 and FF201)
                      PP3v3_UPC0_LDO: 0 V, 0,5V diode mode to gnd
                      PP1v5_UPC0_LDO_CORE:...
                      11-29-2024, 02:47 PM
                    • Loading...
                    • No more items.
                    Working...