a2337 Power on but does not charge

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  • Joyoungjae
    Member
    • Oct 2020
    • 23
    • south korea
    #1

    a2337 Power on but does not charge

    Hello everyone

    It's been a while since I had a problem

    The 820-02016 model is the MacBook Air m1 model.

    At first it seemed like the problem was caused by flooding, but someone cleaned it thoroughly.

    I checked and when I plug in the charger, the meter shows 5v and loops. It shows 0.15 amps and drops to 0

    The power appears to turn on when a battery with remaining charge is pre-assembled.
    When the 12v line is pulsed, it drops from 12v to 8v to 6v and then rises to 12v again.

    Likewise, the 5V line drops to 4V and then rises to 5V.

    I tried replacing uc300, up800, and u5700, but the symptoms are the same.

    There are no visible shorts and no signs of corrosion or water damage.

    Do you guys have any good ideas??​
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13898
      • Canada
      #2
      When it turns on with the pre-charged battery, do you see the backlight on and logo? Any chime? Fanspin?

        Comment

        • Joyoungjae
          Member
          • Oct 2020
          • 23
          • south korea
          #3
          Originally posted by mon2
          When it turns on with the pre-charged battery, do you see the backlight on and logo? Any chime? Fanspin?
          hello sir

          Because it was inspected in a pre-assembled state, everything could not be checked perfectly, but the screen came on.
          Also, when I plug in the charger in the current state, there is a response to pressing the trackpad.​

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