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  1. U

    M1 Macbook Air 820-02016 not going 20V, cycling USB-C.

    Thank you very much! It was indeed the firmware chip itself (UF260), i tried reading it with both our XGecu Pro TL866II Pro and our RT809F, both would not identify it properly, and manually setting to the correct W25Q80DV setting revealed the content to be empty (all 0xFF) using a...
  2. U

    M1 Macbook Air 820-02016 not going 20V, cycling USB-C.

    Thank you for the warm welcome! Only issue with testing with known good battery would be the fact, that we currently do not have another device of this type or a known good battery for it. Is there a way to check if the battery we have is good? (we do have NLBA Battery analyzer) Would...
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    820-02016 No Power - Cycling

    Have done so, thank you.
  4. U

    M1 Macbook Air 820-02016 not going 20V, cycling USB-C.

    Hello! New to this forum, but have almost same symptoms on 820-02016 board as BLS951 had. This one does 5V 200mA for a short time, then goes down to ~40mA before shutting down and starting the cycle anew (USB-C multimeter). Measured the mentioned points: PP3V8_AON_VDDMAIN - ~3.8v PPBUS_AON...
  5. U

    820-02016 No Power - Cycling

    Hello! New to this forum, but have almost same symptoms on 820-02016 board, was wondering if you found the issue. This one does 5V 200mA for a short time, then goes down to ~40mA before shutting down and starting the cycle anew. Measured the mentioned points aswell: PP3V8_AON_VDDMAIN - ~3.8v...
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