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  1. K

    820-02098 power cycling

    C5250 voltage is stable at 12.33v What should be checked next?
  2. K

    820-02098 power cycling

    bad U8100? diode mode MPMU_BUCK0_LXO/3 0.100 0.223 on good board
  3. K

    820-02098 power cycling

    P_IN flucuates up to 0.430v AUX_DET 1.3V stable VDDA/P 5V stable EN_MVR - flucuates up to 0.465v AUX_OK 0.056- 0.890v A/BMON 0V
  4. K

    820-02098 power cycling

    No luck entering dfu mode either
  5. K

    820-02098 power cycling

    Replaced Q5230/40 but no change
  6. K

    820-02098 power cycling

    Still waiting to hear back. Diode mode readings match a good working board. Is there anything else that can cause this issue?
  7. K

    820-02098 power cycling

    Checked diode mode in those areas and all of the readings are very close to a known good board. What should be checked next?
  8. K

    820-02098 power cycling

    Same issue is occurring with F5200 removed. C5250 voltage goes to 12.30v then drops to 0V while magsafe or usb-c is plugged in as they go off and come back on
  9. K

    820-02016 no power

    Replaced cd3217 from known good donar but same issue. Diode mode around DF602 is .168 but normal good reading is .130 diode mode around DF622 is .130
  10. K

    820-02098 power cycling

    Diode mode readings on all big coils look good as well.
  11. K

    820-02098 power cycling

    This arrived with no liquid damage. Power cycles every few seconds. Board looks pristine. Checked all coils and do not see any shorts. When magsafe or usb-c is plugged in they both turn on for two seconds then off then on. All voltages appear as well. What should be checked next?
  12. K

    820-01598 fast fan slow

    solved with new trackpad cable
  13. K

    820-01598 fast fan slow

    cpu proximity is 136c
  14. K

    820-01598 fast fan slow

    heatpipe #1&2 are 128C. Replaced U5850/U5870 but no change
  15. K

    820-01598 fast fan slow

    This arrived with fans spinning fast and slowness. Replaced Q5852-Q5854 but no change. What should be checked next and which program is recommended to find which sensor is at fault. Trackpad works as fine
  16. K

    820-02016 no power

    different m1 board. cd3217 needs to come from only 02016 then?
  17. K

    820-02016 no power

    Arrived with a burnt CD3217 and usbc amp meter going on and off every few seconds. Second port stays on at 5v Replaced bad CD3217 from a donar M1 board but same issue. What should be checked next?
  18. K

    820-00923 no power

    To save trouble of replacing U8600 would the data be readable or even boot into the OS if U9120/U9200/U9100 were moved and soldered to a working 820-00923 board since these have the T1 chip?
  19. K

    820-00923 no power

    Trying to replace U8600 pad 315 PP1V8_SSD_HOT is missing however all other pads are present after cleanup. Will replacement U8600 still work for data recovery with this pad missing?
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