Why is the touch bar not working on my MacBook Pro 2019 after a new battery?

So, your 2019 MacBook Pro’s Touch Bar is acting up after a battery swap, huh? Many folks have found themselves in a similar pickle, and it’s usually a hardware thing rather than just some software hiccup. What often happens is that during a battery replacement, some of the connectors or nearby bits like the charging chip take a bit of a hit, leaving the Touch Bar out of the game.

First off, let\’s dive into what you can do about it:

• Get Up Close and Personal with the Hardware: Even if everything looks shipshape at a glance, it\’s worth turning off your MacBook, then giving the Touch Bar’s display and digitizer cables a little TLC by reconnecting them. A bit of misalignment or a speck of dust can be all it takes to throw things off.
• Do a Little Reset Magic: Refreshing the System Management Controller (SMC) and NVRAM/PRAM isn\’t just a fancy trick—it might just do the job. These resets help fix power and communication glitches. Apple has a guide for this based on your MacBook model. The SMC, for instance, is responsible for regulating power to parts like your Touch Bar.
• Don’t Forget the Software Stuff: While it might not be the culprit here, make sure your macOS is up-to-date and peek into your Touch Bar settings under System Preferences > Keyboard. You could also hop into Terminal and use commands like sudo pkill TouchBarServer followed by killall ControlStrip to give the system a fresh start.
• Brace Yourself for Potential Hardware Trouble: If none of the above does the trick, you might be dealing with hardware damage. Battery swaps can sometimes cause short circuits or damage nearby chips. At this point, you’d need to consider getting a pro involved—someone at an Apple Store or an authorized repair center would be ideal for checking if your logic board needs a fix.

Ultimately, if you’ve tried all the DIY fixes and that Touch Bar is still giving you the cold shoulder, it’s probably a hardware gremlin. It\’s time to call in the cavalry and get some professional help to set things straight.

So your MacBook Pro 2019’s touch bar decided to go rogue after a new battery swap? Don’t worry, you’re not alone. Here’s how you can tackle this glitch:

First up, give your MacBook a restart. It’s the digital equivalent of a cup of coffee—sometimes it just needs a reboot to wake up.

Next, let’s mess around with the SMC. It sounds techy, but it’s not too bad. Shut down your Mac, hold down Shift + Control + Option on the left and the Power button all at once for about 10 seconds. Let go and hit the Power button again. This could set things straight.

Got your macOS up to date? If not, head over to System Preferences > Software Update and see if there are any updates waiting. Apple’s always throwing in fixes that might do the trick.

Check your touch bar settings for any irregularities. Pop into System Preferences > Keyboard > Customize Touch Bar and have a play—make sure everything’s looking right.

Next on the agenda, Safe Mode. Hold the Shift key while booting up until you hit the login screen. See if your touch bar wakes up in this mode.

Still no luck? You might wanna peek inside and check those connections. Just a heads-up, if you’re not comfy with this step, it might be worth getting someone who knows their stuff to help out. A loose connector could be at the heart of this.

Finally, if you’re still stuck, it might be time to wave the white flag and get some backup. Reaching out to Apple Support or popping by an authorized Apple service center could save you a massive headache.

With these steps, you should be on your way to resolving that touch bar trouble. Hopefully, one of these works out for you!

If your Touch Bar isn\’t working after you swapped out the battery on your 2019 MacBook Pro, you’re probably frustrated and wondering what went wrong. There could be a bunch of reasons, from sneaky software glitches to hardware hiccups. Let’s dive into some potential fixes that you can try at home.

1. Quick Software Glitches

Sometimes, the Touch Bar just decides not to play nice due to minor software conflicts—especially right after a change, like a battery swap.

What you can try:

• Restart your Mac: Sounds basic, but it often works. Just hit the Apple menu and click Restart to let your Mac clear its head.
• Refresh Touch Bar Processes: You can reboot the Touch Bar by opening Terminal and typing: sudo pkill TouchBarServer && killall ControlStrip. This can kick the Touch Bar back into gear.
• Check Activity Monitor: Open it up from Applications > Utilities. Look for TouchBarServer and give it the boot. This gives it a fresh start.

2. System Setting Shenanigans

Sometimes the system settings are just not your friend after a fix-up.

How to sort this out:

• Keyboard Preferences: Head to System Settings and check under Keyboard to make sure your Touch Bar settings aren’t mixed up.
• Turn off Slow Keys: This little feature in Accessibility can slow everything down. It’s worth toggling it off to see if it makes a difference.
• NVRAM/PRAM Reset: This is like a deeper factory reset for some of your Mac\’s settings. Shut down your Mac, restart it, and as it boots up, hold down Option + Command + P + R for around 20 seconds.

3. Power Management Puzzles

Swapping a battery can mess with the System Management Controller (SMC), which is a big shot in power management.

Resetting SMC:

• For a 2019 MacBook Pro, shutdown the Mac, press and hold Control + Option + Shift for 7 seconds, then press the power button too and hold everything for another 7 seconds. Fingers crossed, this plays well with the Touch Bar.

4. Compatibility and Driver Chaos

Old macOS versions can struggle with new hardware. If you’ve been putting off an update, it might be time to bite the bullet.

Freshen up macOS:

• Go to System Settings, hit Software Update, and make sure you’re all caught up. It can make a difference.

5. Hardware Troubles

Installing a new battery could\’ve also nudged something loose.

How to troubleshoot:

• Run Apple Diagnostics to see if it flags anything odd hardware-wise. Start with your Mac shut down, press the power button, and immediately hold D. Follow the instructions from there.
• If nothing shows up and you’re stuck, it might be time to chat with Apple Support. They can peek under the hood for you.

6. Deeper System Woes

If nothing has worked and you feel like you’re running in circles, it might be some deeper system issue.

What you can do:

• Reinstall macOS to iron out any system kinks. Just make sure you back your stuff up first. To reinstall, boot into Recovery Mode (hold Command + R while starting up) and choose Reinstall macOS.

Additional Notes

Be wary of third-party battery jobs. These can sometimes complicate things. And if your Touch Bar\’s performance is up and down, factors like heat might play a part too.

If all else fails, book in with an Apple Service Provider for a once-over—it might be something more dramatic than what meets the eye.