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I still replaced the J4002 isight connector but not better but now i notifyed an intresting fact measuring R4008 pin 2 the board has a nice wave 25Mhz signal after starting, tried big sur and high sierra comes apple logo and under the logo the loading line, in about 1/3 of th line the 25Mhz...

no, there is only the message "No video capture devices were found"

I replaced now the 3900 but still the same :-( only ALS sensor is working

conector resoldered without any change tried to detect u3900 via terminal but the command lspci doesnt work instead i used ioreg -l | grep PCI got this but i dont know what it means

yes I forgot to post, checked already L4007/09 in diode mode same readings like on a working board tomorrow i will resolder cam connector and try in terminal to detected u3900 on the PCIe bus like described, thanks @piernov is this what i wrote above not the data lines? ... MIPI_CLK_P and /N...

yes i tried the bios untouched there was only one for 2017 my board is a 2017 original serial is FVHVCG6HJ1WK

got this macbook air as an npo no green/orange light the machine was in other repair place, they took out the ssd and copied the date, gave machine back as repair not possible. my client asked me to chek first if this ist the original board from his machine. so i desoldered the bios chip read...

Problem ist solved! thanks to @EsteTron, I found the same problem https://boards.rossmanngroup.com/threads/imac-27-late-2013-820-3481.59938/ after replacing the burned Thunderbolt Host working great again, thanks all for help

I had the same problem, same solution, I can confirm that it works (I toke also from 820-3437), the burning point was in the same place! Great job @EsteTron, thanks for that post!

thanks, saving client data can i use to do this time machine ?

I got an A1398 2.8GhZ, 16GB, mid 2014, OSX 10.15.7 with bad Akku After replacing it came back because it shows by clicking on battery symbol "service needed..." I replaced the accu checked, no service symbol and sent back Now i got again with the same problem (1 day later) I dont had password...

ok. So, if I replace the Mainboard with another one and the touch Id button with the touch id button from the donar mainboard that will work. the question is, if i clone the ssd from the old mainboard to the new and the client has saved touch id informations from fingers, does her can use all...

so i think i am screwed isnt it?

Need some help please. Had to replace the topcase and unfortunately the cable broke off. I tryed to solder that under the microscope but the seems to be a pain in the a... has anyone of you an idea what could i do here ? thanks all

no idea. my client want to have a 1TB ssd in original place and extendet 1TB in DVD place. I replaced now the 1TB in original place with a 2TB and build in the dvd player back. problem for client solved but that was strange. thanks for help.

back again with bad news i assembled today all together, came the client, machine starting up and shut down or freez. after 3-4 times tryed i have now the same problem like in the beginning, fan spins, cpu vcore is good, it pulls only until 0.5A if good it should until 0.6 I think. seems like...

i tryed alread 2 :-(

i have a a1286 2011, the mainboard is modified with the Tiresias from Harald the osx is a catalina patched from dosdude the 2. ssd is a 1TB, external via usb no problem, can clean it or copie files on it. if is in the dvd place i can "see" in disk utilities or in finder the SSD, but it is not...

the first replaced screen was 2015 as well

yes PRAM reset i tryed, how to start SMC bypass mode? i just noticed that all screens I tryed was 2015, the mainboard is an 2017 is this a problem?