820-00850-A, 1 USB'C port, killing Pen's USB

[SpinNNN]

Hey guys,

im working on 820-00850-A and that already kill my 2 pens usb's... the problematic port only works for the charging part.

the port with problems is related to the U3100. I've also replaced the U3100 but no success...

I have other board 820-00850-A repaired, and alredy compare some readins. The readings is the same.

All others ports work perfectly all thinks.

i need the right direction to repair this mac. I don't want to burn any more pens!

Thanks

 

[2informaticos]

Looks like bad Q3100; replace it.

 

[SpinNNN]

You right one more time. Solved! Many thanks