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  1. 2informaticos

    Macbook A1466 820-00165

    You must have something else corroded; possibly underneath battery connector.
  2. 2informaticos

    a1502 power issue

    Did you test with original 60/85W charger for sure?
  3. 2informaticos

    820-03285 no keyboard no trackpad

    All the chips from page 54 have the correct I/O voltages?
  4. 2informaticos

    A2141 - 820-01700 no power

    Not pure short, so no easy to heat anything with low voltage. You can try with 3V, using a performant thermal camera. May need to wait few minutes, to detect few degrees differences.
  5. 2informaticos

    820-01958 won't complete the restore in dfu mode

    You can try DFU shorting 3V3_S5 to ground. That prevents the Intel side to boot.
  6. 2informaticos

    a1502 power issue

    What happens in SMC bypass?
  7. 2informaticos

    A2338 820-02773 5V PPBUS at 11V

    Correct dioe mode at 3V3_SW_LCD rail? Check UP701 solders and traces.
  8. 2informaticos

    820-02917 A2991 5V .15A

    There must mechanical damage, even not visible. Possibly broken internal traces.
  9. 2informaticos

    Macbook A1466 820-00165

    Check voltage and diode mode at SCL/SDA lines of battery bus. Also check resistance (ohm scale) between pins 17/18 and 27/28 of U7100.
  10. 2informaticos

    Macbook A1278 820-2936B

    Then compare all I/V sensors output with good board.
  11. 2informaticos

    A2338 820-02773 5V PPBUS at 11V

    3V3_Sw_LCD should pulse at same time with EDP_PANEL_PWR_EN. Maybe I understood you wrong. "I get 3.3V there very briefly before it goes down to 0V" Was this reference about EDP_PANEL_PWR_EN?
  12. 2informaticos

    MacBook Air A1932 – Kernel panic, fans ramping up, login impossible (data recovery needed)

    Does it go and stay in target disk mode?
  13. 2informaticos

    Macbook A1466 820-00165

    Check SMC_BC_ACOK level, w/ and w/o charger connected (battery alone).
  14. 2informaticos

    Macbook A1278 820-2936B

    Still turns on in SMC bypass?
  15. 2informaticos

    A2338 820-02773 5V PPBUS at 11V

    "I get 3.3V there very briefly before it goes down to 0V" Can you catch 3V3/5V_SW_LCD at same time?
  16. 2informaticos

    A2338 820-02773 5V PPBUS at 11V

    Any history available? Tested the board alone on the desk?
  17. 2informaticos

    MacBook Pro A2289

    U7000 can work with just 5V input; in boost configuration.
  18. 2informaticos

    Macbook A1466 820-00165

    Did you test the board disconnecting LIO flex? Checked for USB activity (both ports)?
  19. 2informaticos

    820-02899 don´t turn on.

    Apart of no liquid, customer said something about how problem appeared? Do you get SSD voltages? Any chance to enter DFU mode? Sudden death may be caused by faulty SSD.
  20. 2informaticos

    MacBook Pro A2289

    Why changed U7710 too? Something happened when you worked on the board. Also possible damage when you've mounted board back.
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