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  1. 2informaticos

    Macbook A1502 PPBUS 0V

    Did you test with lab PSU, or fake charger? That's the way to discard a leakage issue.
  2. 2informaticos

    Macbook A1502 PPBUS 0V

    Replace it, if got burnt (out of specs). Also check D7005.
  3. 2informaticos

    820-01700 not booting

    CPU configuration is shown on page 6. Page 132 (BOM) also mentions something about various CPU types. You should check the configuration of the MLB where you took the CPU from.
  4. 2informaticos

    820-4924A magsafe orange no fan spin

    It doesn't need too much heat to be removed from the corners. And the small amount remained under the chip can't impede to remove the SMC. Preheat the opposite board side first. Removing CPU heatsink also helps.
  5. 2informaticos

    Macbook A1502 PPBUS 0V

    Check diode mode to ground at C7091/9. Possibly one of C7090-2 is bad.
  6. 2informaticos

    A3113 / 820-03285 liquid damaged

    Check DCIN/BMON_ISENSE levels with both charger and battery connected.
  7. 2informaticos

    820-2098 stuck 5v liquid damage

    Inspect the board with thermal camera. Compare with good working board.
  8. 2informaticos

    A3113 / 820-03285 liquid damaged

    Just in case, replace Q5265 and test again. Check all adjacent traces and components.
  9. 2informaticos

    820-00923 - touchbar maybe

    Yeah, better...
  10. 2informaticos

    820-02098 orange light but never green

    No good SCL/SDA voltages. Check UD102/50 and their adjacent resistors.
  11. 2informaticos

    820-01700 not booting

    Any CPU configuration strap should be mentioned in the schematic.
  12. 2informaticos

    820-2098 stuck 5v liquid damage

    "PPBUS =10v unstable" Without battery connected?
  13. 2informaticos

    Macbook A1502 PPBUS 0V

    Do you now get 3V42_G3H and PPBUS_G3H?
  14. 2informaticos

    820-4924A magsafe orange no fan spin

    In this case SMC is the first suspect.
  15. 2informaticos

    A2681 820-02536 no power

    "PPBUS_AON = 6.72V PP3V8_AON = 1.590V" Diode mode? Check with IR camera if something overheats.
  16. 2informaticos

    820-4924A magsafe orange no fan spin

    These signals must be present always. Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L. Be sure PM_RSMRST_L is kept always high.
  17. 2informaticos

    820-4924A magsafe orange no fan spin

    What about 3V3_SUS? Check PCH's RTC (DC) signals.
  18. 2informaticos

    820-00923 - touchbar maybe

    Ooops, that points to bad T1. If you are lucky enough, may be only bad J4402. You can inject until 2V there, for test.
  19. 2informaticos

    Macbook A1502 PPBUS 0V

    "Adapter_SENSE is 16V" Bad DCIN board; replace it.
  20. 2informaticos

    A3113 / 820-03285 liquid damaged

    Check diode mode to ground at PPVBAT_AON_CHGR_R and PPVBAT_AON_CONN.
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