MBA A1466 random shut down

Hi
I have a MBA 820-00165 in with liquid split on it. It’s been liquid damaged for long time before he brought in. I cleaned and did visual inspection and found backlight section damaged. I replaced the backlight Ic, LVDS connector and jumper from pin 8 to Iset resistor. It came to life back. But keep shutting down in 5-6 mins after start up. I have tried by replacing other parts like I/O board, fan and I/O board cable. I didn’t find any other rusted component. What could be the reason for this random shut down. Any help would be highly appreciated. Thanks in advance.
 

2informaticos

Administrator
Staff member
Check if stays on booting in SMC bypass mode.
Does it still shut down in boot menu, or only into macOS?
You should try clean ME BIOS.
 
It shuts down in boot menu also some time and even during loading the OS at apple logo bar. I tried to read the Bios but it say chip is empty. even not completing the write on BIOS chip.
 
I have tried cleaning the ME region but the problem has not solved. it still does shut down and takes ages to boot. I have also tried with different BIOS chip but it also does not made any difference. can you please provide me the good BIOS for this board?
 
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