820-00165 No keyboard and mouse in Mac OS X

Hello,
I have a motherboard 820-00165 where I have the keyboard and mouse that no longer work on Mac OS X.
What's odd though is that the keyboard works fine when booting, I can do an Alt + Cmd + P + R or a Cmd + D or Cmd + R without worries.
So I suddenly made several PRAM reset but nothing.
In Internet Recovery Mode (Cmd + R), the mouse and keyboard do not work either.
But in diagnostic mode (Cmd + D) yes.
I tried to reinstall Mac OS X by formatting the SSD (10.10 to 10.13 with all updates), but nothing, still the same problem.
The card is undergoing a surge, it did not start at first but I fixed it in addition to the backlight and now I have this problem.
Cordially.
 

2informaticos

Administrator
Staff member
Check all traces and resistors related with SPI mode for trackpad connector.
Also check U4810 area for corrosion.
Post U4810 voltages into OSX.
 

2informaticos

Administrator
Staff member
U4810 looks good.
Check all traces and resistors SPI related.
Don't forget to try other trackpad board/flex.
 
In the end I saw that all the solder pads of R4852 had been ripped out so impossible to change or at worst to bridle. The only solution I saw on the diagrams is to run a thread from a pad to pin 9 of the keyboard / mouse connector. But it's way too small for my material.
 
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