820-00281 critical update

[ThisIsWes:AASP]

I've had a few of these lately and always fixed with u4200 clean/reflow/reball. This one had corroded dust near u4200 but cleaning and replacing twice had no change. Clean board otherwise. No ultrasonic yet.

Any other suggestions for this?

No touchbar or keyboard backlight like usual. Boots in safe mode but stopped by update error otherwise. Only difference with this one from all others is that I can actually boot externally (still no TB). All others external boot is still stopped by update.

 

[2informaticos]

Disconnect webcam and try again.

 

[ThisIsWes:AASP]

So that worked. I was able to load the OS but now I have no touchbar. Yes keyboard backlight.
It does the 2 min install when restarting but TB doesnt come to life.

 

[ThisIsWes:AASP]

And it doesnt wake from sleep now. Panic message on restart.

 

[ThisIsWes:AASP]

 

[2informaticos]

Try with external macOS, to discard software for sleep issue.

 

[ThisIsWes:AASP]

Externally it will wake eventually with the press of the power button. But freezes after entering the PW and later coming to life.
I tried this again in the local OS and it came back on for 1 second after pressing the power button and waiting 30 seconds. It then restarted on its own.

Set standby 0 with no change.

 

[2informaticos]

Did you try PRAM reset?

 

[ThisIsWes:AASP]

Swapped cases and touchbar works, sleep issue gone. Camera not working but I cant confirm if this was preexisting.
Assuming original case has a faulty touchbar causing all these issues?

 

[ThisIsWes:AASP]

Finished the top case swap. Original display with cam connected and TouchID switched over. Everything works now.