Macbook A2337 820-02016 No Power 5V

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Instafixx
    Badcaps Veteran
    • Jul 2022
    • 374
    • India
    #1

    Macbook A2337 820-02016 No Power 5V

    Hello,
    Namaste.

    I have a Macbook A2337 820-02016. Customer was trying to update the software and the machine suddenly went off.

    Its stuck at 5V.

    Its not in DFU Mode - Checked.

    The PPBUS_AON is at 12.28V.

    PP3V8_AON_VDDMAIN checked at C5887 is shorted to Ground. All components on the board in this line are shorted . What can be the issue? Some IC that controls this line ?
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13897
      • Canada
      #2
      Re: Macbook A2337 820-02016 No Power 5V

      PP3V8_AON_VDDMAIN checked at C5887 is shorted to Ground.
      Post the resistance to ground of this rail.

        Comment

        • Instafixx
          Badcaps Veteran
          • Jul 2022
          • 374
          • India
          #3
          Re: Macbook A2337 820-02016 No Power 5V

          Originally posted by mon2
          Post the resistance to ground of this rail.
          Meter set to the Lowest Scale (200). Getting 00.5.
          Checked with Another Meter set to Diode Mode (Omega Sign) Getting 55 Omega.

            Comment

            • Instafixx
              Badcaps Veteran
              • Jul 2022
              • 374
              • India
              #4
              Re: Macbook A2337 820-02016 No Power 5V

              Originally posted by mon2
              Post the resistance to ground of this rail.
              SOLVED.

              Issue from the PMU. Reballed the PMU and the short was removed. Still wouldnt turn on so checked and found that the machine was on DFU. DFU revive and done.

                Comment

                • mon2
                  Badcaps Legend
                  • Dec 2019
                  • 13897
                  • Canada
                  #5
                  Re: Macbook A2337 820-02016 No Power 5V

                  Good job!!

                    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...