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  1. 2informaticos

    820-3332 NO POWER

    "3 : 0v" Fix this problem. U7000 requires good ACIN signal; 4V aprox.
  2. 2informaticos

    A2681 820-02536 no power

    If short without MPMU, then must be a bad capacitor. Voltage injection method should help.
  3. 2informaticos

    A2442 820-02098 not charging

    I don't have such dump in my library...
  4. 2informaticos

    MacBook Pro M1 - 820-02020 stuck on 5V 0.21A

    Get replacement CD3217 chip from same model donor board.
  5. 2informaticos

    A1707 820-00928-A no backlight

    DP_INT_HPD still 0V? Tried known good LCD assembly again? External video missing now?
  6. 2informaticos

    A2681 820-02536 no power

    "PP5V_MPMU_BSTLQ_XW has 0.002 on diode reading" Not normal; did you check it once MPMU was out of board?
  7. 2informaticos

    820-00597 Boot with apple logo freeze

    Did you test disconnecting J6600? https://boards.rossmanngroup.com/threads/how-to-collection.60974/
  8. 2informaticos

    A2442 820-02098 not charging

    D5403 is just a protection for CC1 line. Remove it completely, to avoid any leakage.
  9. 2informaticos

    A1707 820-00928-A no backlight

    Bad trace to pin 1? However, 0.179 looks lower than expected at pin 3. You should change U9850.
  10. 2informaticos

    820-02100 20V 0.15A bootloop (DFU error 21)

    Use external switch method for DFU access. https://logi.wiki/index.php/DFU_Mode_Restore_(Macs)#DFU_Mode_using_external_switch Any chance to stay on in recovery menu?
  11. 2informaticos

    Macbook A2918 Keyboard / Sleep/Wake Issue

    The "wrong" keys are placed in same row, or column? Save data and try DFU restore.
  12. 2informaticos

    820-3332 NO POWER

    Keep out F7040/1. Post U7000's basic voltages: 2, 3, 9,12, 13, 14, 15, 17, 19, 20, 27.
  13. 2informaticos

    Macbook A1398 820-00136

    When tries to tuen on, PCH and CPU voltages come on? What about ALL_SYS_PWRGD?
  14. 2informaticos

    Macbook A1466 820-00165 Intermittent Fan Spin

    Fan can't spin if PM_SLP_S4_L stays low. Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L. Did you try SMC bypass?
  15. 2informaticos

    820-00875 20V @ 0.124A No Power On.

    Unfortunatelly, dead PCH...
  16. 2informaticos

    820-01598 stop working

    Check diode mode to ground at C3113/4; you should get very similar readings. Also check continuity with corresponding pins of J3300.
  17. 2informaticos

    820-00597 Boot with apple logo freeze

    It is stuck on Apple logo, no progress bar? Did you try safe mode and SMC bypass? Can you access boot menu and embedded diagnostic?
  18. 2informaticos

    A1707 820-00928-A no backlight

    "1= OL 3= 0.179" Did you check both with red probe on ground? You should get very similar readings.
  19. 2informaticos

    A2442 820-02098 not charging

    You should compare INT_L lines with good board. UG260 is the ROM from right side...
  20. 2informaticos

    A2779 (820-02841-A) Gets 20V, 5V->20V handshake loops and does not boot. Can enter DFU. Liquid Damaged.

    Is U7700 soldered on the board? If yes, remove R7810/40 and check where the shorts remain. You may also need to lift L7810/11 and L7840-43.
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