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  1. 2informaticos

    820-00165 Orange Light

    Remove (one by one) R8164-8 resistors; keep in place R8167. Check when ALL_SYS_PWRGD goes high. BTW, be sure first to get 3V at pin 1 of R8167.
  2. 2informaticos

    820-02016 A2337 5V Cycling between 0.00 and 0.45a

    What about PPBUS_AON and 3V8_AON behavior?
  3. 2informaticos

    820-01700 trackpad clicking but no movement

    Post J6800's basic volatges: pins 12, 14, 34, 11, 15, 19. Of course, check them with trackpad connected.
  4. 2informaticos

    820-01814 no image

    Check for pulse without LCD connected.
  5. 2informaticos

    820-00165 Orange Light

    Remove Q8150 and check again ALL_SYS_PWRGD.
  6. 2informaticos

    820-00165 Backlight/Image Issue

    Check diode mode there, with LCD connected.
  7. 2informaticos

    A2442 820-02098 not charging

    USB meter stays black on all ports?
  8. 2informaticos

    820-02020 don't switch off lcd when closed

    No need to connect the LCD. You can test left sensor JR200 with a magnet. Is not so easy with right sensor, placed on right speaker area.
  9. 2informaticos

    820-02536 no 20v

    First check diode mode to ground at 3V8_AON. CHGR_EN_MVR is also 0V'
  10. 2informaticos

    MacBook Air A2337 (M1, 2020) No Backlight

    Check voltage and diode mode to ground on I2C_BKLT_SCL/SDA lines; LCD connected.
  11. 2informaticos

    A2681 no Keyboard

    You have more corrosion somewhere for sure...
  12. 2informaticos

    820-2850 intermittent charging

    Inspect U6900/1 areas for corrosion. Clean DCIN board and Magsafe connector as good as possible.
  13. 2informaticos

    820-00967 - LED 1 only

    I don't have such board to compare readings, sorry.
  14. 2informaticos

    820-00967 - LED 1 only

    Do you get any pulse on other LEDs? Also check for pulse at 12V_S0 and other secondary power rails. Remove the CMOS battery, to allow automatic turn on.
  15. 2informaticos

    820-3115 - Not turning on / Fan goes to full speed

    Try heating CPU too. You can probably get second hand board for good price. Think if is worth to invest time on this.
  16. 2informaticos

    820-02841 - Keyboard and shutdown issues after liquid damage

    Sorry, I don't have such board in hands...
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