(347) 552-2258 [email protected]

Search results

  1. O

    Macbook Pro 2019 no power

    Hi Guys, I have this dead Macbook Pro 2019 13", I would like to know before if it accepts repair and if anyone has ever worked on the logic board? please advise before I go on with logic board troubleshooting. Thanks
  2. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    Great! Have changed U8180 though, but I guess must be a bad one still. I will try another U8180 tomorrow and give you feed back on it... have a good one champ.
  3. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    On U8180: Pin 1 and 2 read 1.21V, Pin 3 is GND, Pin 4 the troublesome guy reads 0V and Pin 5 reads 3V.
  4. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    R8178. reads 3.32V
  5. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    No!i have 1.21V on pin 1 and 2. Only pin 5 reads 3V
  6. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    Yes I did. But no 0V at PM_SLP_S3_BUF_L still
  7. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    R8178 reads 99.7ohms
  8. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    Oh thanks. I just noticed that every Components on PM_SLP_S3_BUF_L power line are givBig 0V but components before PM_SLP_S3_BUF_L Read their actual Volts. Just trying to get a better understanding of the messages diff schematics are trying to pass
  9. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    Just curious. "PM_SLP_S3_BUF_L” produces P5VS0_EN right?
  10. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    R8178 reads 3.32V. i'm surprised why I get 3.32V on R8178 and PM_SLP_S3_L pin 1 and 2 will read 1.21V. What's missing here?
  11. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    pin 1 and 2 reads 1.21, pin 5 reads 3.32 but pin 4 reads 0V... Does it mean that my case is a rare one?
  12. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    It has been changed but the same thing. P5VS0_EN still missing. PM_SLP_S3_BUF_L still 0V.
  13. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    There is power at pin 5 - 3.3V. Does that mean I go ahead with the replacement?
  14. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    Hello Dear friend, I'm skeptical about replacing the suspected chip (U8180). Considering a basic note on Rossman's Training guide that pointed not to replace IC that does not have voltage at an"Enable" pin, the pin may have not been told to come on. If yes can you please identify chip...
  15. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    PM_SLP_S3_BUF_L is 0V
  16. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    have worked around the board and I noticed that P5VS0_EN is 0V. C8187 pin 1 to P5VS0_EN reads 0V. R8187 pin2 also reads 0V. U8080 pin 2 also reads 0V. U8180 is the water affected area with its pin 4 reading 0V. R8167 pin 2 reading 0V. I'm confused here identifying which logic gate between...
  17. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    Unfortunately no, PM_SLP_S3_L on R8178 pin 2 reads 3.32V PP5V_S0 reads 0V
  18. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    S0 reads 0V I meant
  19. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    ALL_SYS_PWRGD reads 0V S0 reads. please what next?
  20. O

    820-4924 no power, PP5V_S3RS0_ALSCAM_F missing

    there was. about 5.8V max. Ranges from 2.02V to 5.8V before it now settled at 3.32V
Top