Touchbar dead after keyboard replacement
Hi, I have replaced the keyboard and backlight on 2 MacBook Pro A1706s. This is just the keyboard and backlight, not the entire topcase.
The issue I have is that the Touch bar is dead on both of them. If I disconnect all the screws and flex cables except for the touchbar, power button, keyboard, touchpad and TB and boot the Mac the Touchbar works on both.
If I connect everything i.e. screws and all flex cables the Touchbar is dead. Exactly the same on both. I have done the usual NVRAM, SMC, macOS install and it does not fix the issue.
I have taken everything apart and checked the logic board and the flex cables under a microscope and I find no issue. Everything looks fine.
Because I have the same issue on both devices I’m wondering if it is the keyboards as I got them from the same supplier. Has anyone got any experience with this issue or have any ideas ?
Is this a good question?