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  1. 2informaticos

    820-02098 5V

    USB-C meter has different behavior on UG400 port than other ports?
  2. 2informaticos

    A1989 - Boot loop (820-00850)

    Looks like board boots, if CPU core drops to 0.638V. Check if board is detected, or at least stays on, in target disk mode. Did you test with charged battery?
  3. 2informaticos

    Macbook A2337 Recovery

    "I get the battery charging sign even though battery isnt connected" So macOS is loaded without battery connected?
  4. 2informaticos

    MacBook Air / A2941 / 5.16V 0.0A /

    What is 820-xxxxx code of your board?
  5. 2informaticos

    A1534 820-00244 no power

    Be sure R1570 is good. Check diode mode to ground at PM_PWRBTN_L. Possibly bad PCH/CPU...
  6. 2informaticos

    820-00928 dead.

    Machine doesn't need to boot from USB, to test external activity. https://cmizapper.com/products/usb-tester.html
  7. 2informaticos

    820-00928 dead.

    U9850 is not involved in power on sequence at all.
  8. 2informaticos

    820-00928 dead.

    All USB ports without activity? Did you also check for external video?
  9. 2informaticos

    A1534 820-00244 no power

    Pufff, it should stay high normally. SMC_ONOFF_L stays at 3V?
  10. 2informaticos

    A2442 820-02098 not charging

    Save data with battery and try restore option...
  11. 2informaticos

    A2289 820-01987-A water demage

    What is the exact 820-xxxx code of your board? 02020 is A2338 M1, not Intel A2289. If you have 01987 board, check resistance (ohm scale) over C7020.
  12. 2informaticos

    A1534 820-00244 no power

    Any fault history available? Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L (at same time).
  13. 2informaticos

    Macbook Pro A2338 820-02020 3V3_S2 missing

    Possibly something affected by overheat in USB-C area. It should be detected in DFU, if it was at beginning...
  14. 2informaticos

    Macbook Pro A2338 820-02020 3V3_S2 missing

    Get both from the link I posted...
  15. 2informaticos

    820-01521-A A1932 EMC 3184 Over 150% CPU Used By Kernel_task

    Fan goes to max speed and system is very slow, if battery is not detected...
  16. 2informaticos

    A1534 820-00244 no power

    What is exact PPBUS_G3H voltage, w/ and w/o battery connected? Did you test in SMC bypass mode?
  17. 2informaticos

    820-01521-A A1932 EMC 3184 Over 150% CPU Used By Kernel_task

    Test with known good battery.
  18. 2informaticos

    Macbook A2338 820-02020 1vS2

    If short remains on CPU side, then is bad. Possibly leak from PPBUS_AON...
  19. 2informaticos

    Macbook Pro A2338 820-02020 3V3_S2 missing

    You don't need to connect charger, if machine turns on with battery. Just check if external device gets 5V (from the mainboard).
  20. 2informaticos

    Macbook Pro A2338 820-02020 3V3_S2 missing

    Do you get 5V on USB-C ports, when connect external device? https://cmizapper.com/products/usb-tester.html
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