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A1706/EMC 3071—于2017年6月上市，这台13''MacBook Pro以可升级至3.5Ghz酷睿i7动态超频至4.0GHz的Kaby Lake处理器为特征。

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Touch bar still broken after upper case swap

Hi!

Yesterday, I swapped all my internal components myself into a brand new upper case purchased from iFixit due to a dead keyboard, backlights, and touch bar. The repair went perfectly, and all components are now working—except the touch bar. Prior to the repair, the touch bar was completely dead, TouchBarServer couldn’t be found in Activity Monitor, and all touch bar options were missing in System Preferences. Post repair, its display is still blank and its options are still missing in System Preferences, but the TouchBarServer process is back in Activity Monitor. Its options are still missing in System Preferences.

The upper case I purchased came with a new touch bar and it’s cable pre-installed.

Computer is 2017 13” MBP w Touch Bar (A1706).

Is there something I am needing to repair here? Or could this just be a Big Sur beta software bug? Are there any fixes for that?

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My MacBook Pro A1706 has a problem with TouchBar, it displays very well but doesn't respond when using it, the touch is completely not working despite showing all the icons when the computer is in use, will I fix this problem if I transfer the internal components to a brand new palm rest which has new Touch Bar?

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For anyone attempting to find a solution for this, here it is:

Unfortunately, by the hands of Apple, there is no simple solution for this other than having your logic board itself fixed. The problem is the Touch Bar is unable to install its needed firmware (as it runs independent of macOS on something known as embeddedOS), and thus will not work.

Ended up shipping mine out to an independent fixer (PowerbookMedic), where they diagnosed that the problem with my Touch Bar’s inability to download its firmware was a T1 chip that needs complete replacing.

Total is about $300, which is much better than the $1k I was looking at if I decided to replace the entire board with all of my soldered on customizations (3.5 gHz, 16 GB RAM, 512 GB storage, etc etc).

So sorry there isn’t anything easier.

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What I can tell you you likely still have a hardware level issue.

I would review the connections and make sure you also try resetting the SMC & NVRAM.

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Am I able to reset both at the same time? Or should I perform the steps for the SMC first, boot up the computer, then shut down again and do the NVRAM?

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@bunrin - Do each one at a time.

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@danj Unfortunately these didn't work. Am I looking at a connections issue, and are they parts that I can find here?

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Lets see what the onboard diagnostics tell you. Restart your system and press the D key did you get any errors?

Reference: Mac startup key combinations

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@danj Did the diagnostic, it came up very quickly (<3~4 minutes) as no issues found.

I did some research and saw some people in the same situation as I am talking about how bridgeOS might have crashed or stalled. Do you think that's possible here? (Thank you for your continued help by the way, it is appreciated more than you can know!!)

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