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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...
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...
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 =...
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.
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 ...
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...
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...
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...
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 ...
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...