Got a macbook air that fails to boot from any drive be it external or internal. It just shuts down when the progress bar is about 25%. After it's off i can turn it on normally with the power button. I tried flashing a clean ME efi but there wasnt any difference. What could be the issue here? I can take measurements on the board if needed. There is a bit of liquid damage on the back of the board. I uploaded it to the drive folder. And also here's the video footage. https://drive.google.com/drive/folde...DzIb6YHjc9RMvh
Macbook air a1369 emc2469 boot issues
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Re: Macbook air a1369 emc2469 boot issues
Got a macbook air that fails to boot from any drive be it external or internal. It just shuts down when the progress bar is about 25%. After it's off i can turn it on normally with the power button. I tried flashing a clean ME efi but there wasnt any difference. What could be the issue here? I can take measurements on the board if needed. There is a bit of liquid damage on the back of the board. I uploaded it to the drive folder. And also here's the video footage. https://drive.google.com/drive/folde...DzIb6YHjc9RMvh
and that board need to be cleaned first contact cleaner a mild brush will do. and tryy to update, maybe a corroded solder joint the chip cause this issue -
Re: Macbook air a1369 emc2469 boot issues
cleaned with alcohol and no difference. Do you think a solder reflow would help?Comment
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by itzusmanHi Masters.
My 1708 EMC3164 macbook have power issues. First it was working fine but a bit slow in booting. Net day i turned it on and it didn't powered on. And i tested with usb meter it suddenly @ 20v it takes 2.6 ampares and cpu gets hot. Then i checked the baord and PPBUS_G3H was short to ground. I injected 1v to it it takes 350ma and cpu gets warm. After opening L7410/20/30 there was inly L7420 line was short then i injected 3v to PPBUS_G3H and it takes 2.5 amps and U7420 got hot and i desolder it. Now after that in the start it takes 0.580 amps and goes to 620-30 mili amps....2 Photos - Loading...
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