Re: macbook 820-00239 20v no power missing pp3v3_s5
ok this is becoming a nightmare
i have a fully working 820-00239 board so i compared all the measurement you asked me and everything was ok
when i was taking all those measurement you asked i noticed something weird on U7660 so i changed it after that i powered up the board again and it was taking 20 mA more than before but still not booting of course
i unplugged and measure PP3v3_S5 again and now its shorted to ground
i removed u7660 and the short is still there
so out...
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macbook 820-00239 20v no power missing pp3v3_s5
hello everyone
this is my first time posting
i want to thank everyone for everything because i found a lot of solutions in here
i have repaired a lot of macbook logic boards and i consider i have some experience but a lot to learn still
this time i couldnt find the solution anywhere so here i am
this a1706 logic board i have was taking 20v and 120mA stucked
i opened it up and did a visual inspection and it was all good except from U7650 which had some corrosion between the ic and C7651 i tested C7651 and shorted
so i removed C7651...
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Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
that is why i am asking if someone can do it for me...
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Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
because i dont have linux to write the serial number into this file and do the checksum...
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Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
serial: C02LPRSYF5V7
emc: 2632
if you could do send me a good working file so i can program it to the spi i would really appreciate it...
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Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
no apple logo with this file
i load it to the chip and i have blinking folder with questionmark again...
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Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
My friend thank you for answering
I understand the video you posted the problem is that i dont have linux so i cannot use those programs
The bin file i uploaded is from the macbook iam trying to fix so it has the serial number inside it. The emc is 2632 and the board 820-3437-b
Do you need something else? If you could do this and give me the fixed bin file ready to upload it to the chip i would be really grateful!!
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Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
nobody?
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Re: EFIBIN File MacBook Air A1466 (EMC 2632) 820-3437-B
hi
i have a 820-3437-B with corrupted efi file
my macbook turns on ok but it shows the folder with questionmark even with a good ssd connected, i replace the spi rom chip from a working board and it boots ok with apple logo and the bar loads up but of course it doesnt enter the system because the spi rom chip is from another mac
i extracted the bin file from the damaged mac can anyone do the process for me to the bin file so i can load it back to the chip and be working?
i really...
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