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  1. A

    820-00165

    So what do I do about it?
  2. A

    820-00165

    if it turns on and the trackpad works, can I leave it with bypass? strange why does this happen, yes I changed u8000 2 times?
  3. A

    820-00165

    3V3_S4=3.3v
  4. A

    820-00165

    bypass u8000, then 3V3_S5=3.3v
  5. A

    820-00165

    disculpe cuando se refiere a bypass u8000, se refiere que quite u8000 y que haga una union con un cable 3V3_S4 a 3V3_S5
  6. A

    820-00165

    Ok, change again u8000 and then 3V3_S4=2.5v PP3V3_S5=3.3v
  7. A

    820-00165

    S4_PWR_EN=3.3v diode mode to ground at R8000=0.39
  8. A

    820-3437

    board no turn on, no green light, smc_reset_l=3.3v PP3V42_G3H_REG=3.42 PPBUS_G3H=8.16
  9. A

    820-00165

    I measured those values with the trackpad disconnected, only with the board
  10. A

    820-00165

    change R4830 pin 10 2.4v PP3V3_S5=3.3v PP3V3_S4=2.4v, change u8000 because it is physically damaged, problem persists
  11. A

    820-00165

    3.4v pin1 1.9v. pin10 5.1v pin 14 3.41v pin 19v
  12. A

    820-000165 Not video

    this macbook does not give video, it does not have usb data, it turns on and turns the fan, it does not give a green light. some story: entry with humidity computer turned on with video but backlight worked sometimes. It had some resistors R5177, R5178, R5179 corroded, I changed them and it did...
  13. A

    820-00165 backlight

    change backlight driver lp8550, and backlight is not working. BKL_EN=0v
  14. A

    820-00165

    Hello I need help how to solve this problem.Te escribo español hacerme entender.El pad SMC_TM se daño por corrosion, por lo tanto.Yo hago un puente desde R5177 al pin smc pin10.Sin embargo el pad SMC_TM tambien va al pin 9 J6100, como hago para llegar desde el pad SMC_TM hasta J6100? tambien me...
  15. A

    820-000165 turn on, not video

    This machine works well with all active sources, but it does not give video, nor backlight; fan turn on some measures BKL_EN=0v EDP_BKLT_EN=0v PPBUS_G3H=8.6v PPVIN_S0SW_LCDBKLTFET=8.6v PLT_RERST_L =3.2V
  16. A

    820-00165 backlight

    XW7720 there is continuity, BKL_EN/PWM are stable 3.2v
  17. A

    820-00165 backlight

    good, this macbook was changed 2 times backlight chip lp8550 and after a week it comes back and fails with the same original failure, this is the original video failure. macbook works well and the light goes out, it was already tried with another screen and the problem persists...
  18. A

    820-00840-A not turn on

    which resistors?
  19. A

    820-00840-A not turn on

    I already changed u7000 and the problem persists
  20. A

    820-00840-A not turn on

    A question about this type of board that are thinner at what temperature and air in the station do you remove the chips?
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