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  1. huzeafa

    820-00281 NO DISPLAY ON INTERNAL SCREEN

    Good day, guys. I have a 15 inches 2016/17 Touch Bar with no display on internal. When I measured in DIODE MODE {{EDP_AUXCH_C_P}} signal was very low compared to a working board which led me to replace U9850 from a donor board, then checked again in Diode mode, and this time the value I got was...
  2. huzeafa

    16 inch with funny issues

    Good day guys . Have got a 16 inches with a very funny behaviour: the machine powers and boots fine with the rich bar on but no display, however when I performed a “ REVIVE /RESTORE “ through DFU, the display will work again until I restart, then it stops working, when I perform the procedure...
  3. huzeafa

    820-00281 crashes from sleep only

    I did remove j9600, but it didn’t boot through external drive , came up with a critical update error
  4. huzeafa

    820-00281 crashes from sleep only

    Forgot to mention, I tried the board in a different shell , same thing
  5. huzeafa

    820-00281 crashes from sleep only

    Good day guys Have got an 820-00281 that crashes when it wakes from sleep, but this does not happen when I manually put the machine to sleep from the operating system. below are the sleep signal I measured PP0V6_SLEEP = 06V PP0V8_SLEEP = 08V PP1V1_SLEEP = 1V PP1V8_SLEEP =1.8V SMC_LID RIGHT =...
  6. huzeafa

    Tools for bios programming

    Good day guys please I would like to be pointed to which which programming tool I can get for repairs. For older and newer machines : thank you
  7. huzeafa

    820-01987 Does not power from charger but works on battery

    Thank you so much. This one has been resolved. So it turns out D3349 and D3328 were burnt out, which then caused damage to both CD3217, replaced both CD3217 and D3349+D3328, and the 20V was restored. Once again, thank you for your help.
  8. huzeafa

    820-01987 Does not power from charger but works on battery

    Could you please help me clarify this “Just a quick question, I swapped U2890 from a working board just to test it, and I still get 5V however its own U2890 on the other board gets 20V. Does this mean they are interchangeable from the same board? if yes, then why do we have to reprogram it ...
  9. huzeafa

    MacBook Pro 16 inch would not upgrade form Catalina

    I only use LAN for recovery. wireless is very slow
  10. huzeafa

    820-01987 Does not power from charger but works on battery

    I do get 3V3_G3H_RTC in the value of 3.3V with the charger connected U2890 is good tried on another board, also the surrounding area is very clean ohm resistance over C7020/23 value is the same with a known good board USB devices are recognized in macOS? I do not have the client password...
  11. huzeafa

    820-01987 Does not power from charger but works on battery

    Just a quick question, I swapped U2890 from a working board just to test it, and I still get 5V however its own U2890 on the other board gets 20V. Does this mean they are interchangeable from the same board? if yes, then why do we have to reprogram it ? or is there a different outcome to be...
  12. huzeafa

    MacBook Pro 16 inch would not upgrade form Catalina

    Safari crashes and will not open
  13. huzeafa

    820-01987 Does not power from charger but works on battery

    Thank you, will check and get back to you.
  14. huzeafa

    MacBook Pro 16 inch would not upgrade form Catalina

    I have, no changes. Even when I try to upgrade to Monterey, same error, would not go through
  15. huzeafa

    820-01987 Does not power from charger but works on battery

    Hello guys , have got an 820-01987 that does not power from the charger, but works fine on battery. I only get 5V, and PPBUS is 12.3 with charger connected. I have compared diode mode on the LDO of the CD3217 and all seems good , all basic rails for the CD3217 are present: there’s no corrosion...
  16. huzeafa

    MacBook Pro 16 inch would not upgrade form Catalina

    Good day guys , I have 16 inches, that safari fails to open , so I decided to re install the MacOS, but that didn’t work with a usb stick regardless, so I decided to use DFU to restore the machine , after that I used internet recovery to install the Os, it fails at the ending multiple times ...
  17. huzeafa

    820-0016 MISSING PM_BATLOW_L

    Thank you guys, I apologize, for my mistakes, when @2informaticos asked this (3V3_S5/SUS is steady) I did check but did not hold the probe point longer to see that after sometimes the voltage drops and then go back up, so I resolved that, and the board is now resolved. Thank you so much...
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