внимание вопрос: мастер говорит, что проблема в чипе т2, хотя на сколько я знаю, чип т2 никак не занимается управлением питания аккумулятора, а занимается этим чип smc … можете просветить?

⟐ Answered марта 25, 2023 at 0:58 GMT-7

Anyway, I assembled everything according to the guide and everything works well, the battery is also great. However, I have just noticed, that even though the power button works, the touch id does not:

Whenever I log into the account after starting the mac, I enter the password, and after some time whenever it goes to sleep I cannot open it with touch id. Additionally, touch ID stopped working with saved passwords in Safari.

Also, whenever I try to add a new fingerprint, I get following error, right after I click add fingerprint and enter the password:

Failed

Unable to complete Touch ID enrollment.

So it does not even allow to put a finger on it. Anyone knows how I can solve this issue? Because power button works.

What I did so far:

• Tried to reset NVRAM and SMC
• Tried to add new fingerprint in Safe Mode
• Visually inspected if the ribbon for touch id and power button is damaged (it is not)
• Tried creating a new user and adding a fingerprint
• Tried running Apple Diagnostics (Control+D on startup) - no hardware failures.

Anyone encountered it and knows about any possible solutions I can try?

Finally found some time to disassemble it, I reconnected everything, as you can see in the images (even though low quality but hopefully good enough), the touch ID does not work and touch id enrolment fails :(

⟐ Answered августа 16, 2026 at 4:28 GMT-7

Current status/troubleshooting performed:

- Draws 20V and ~3.45A on USB-C (power delivery is negotiating normally).

- External monitor / peripherals show no output.

- Performed DFU mode revive and restore using Apple Configurator 2, but it did not resolve the issue.

- Internal connections and cables checked; no physical or liquid damage found.

Since standard DFU restore and basic troubleshooting haven't fixed a post-upgrade failure like this, what component level or firmware issue (such as T2 ROM corruption or specific power rails) could cause this behavior?

⟐ Commented августа 15, 2026 at 21:01 GMT-7

Here see the horizontal lines in the Finder icon.

⟐ Commented августа 02, 2026 at 7:17 GMT-7

⟐ Commented июля 24, 2026 at 6:01 GMT-7

Troubleshooting steps - I've basically done everything software wise, so I know it's hardware. Chat GPT seems to believe it's the backlight fuse that may have blown due to liquid entering.

Anyone have a hunch on what's happening? I know liquid is difficult, as I've actually worked at an Apple Store as a technician. This was a used purchase and I'd rather not spend a whole lot fixing it, but I'd like the backlight to work.

I do not have soldering equipment or a microscope, but I'm comfortable disassembling and stuff at home (I've replaced thousands of phone batteries and displays, and I build computers as a hobby). Thanks!

⟐ Commented июля 24, 2026 at 4:04 GMT-7

⟐ Commented июля 15, 2026 at 4:42 GMT-7

Can someone point me to the relevant cables which connect the LCD to the logic board?

⟐ Answered июля 14, 2026 at 20:54 GMT-7

There is always a delay for characters showing on screen when pressing “CAPS lock” key (when needs capital letter), it works fine after having the MacBook pro reset to factory settings, but issue came back gradually after installing apps like office, mail, etc.

Is there a setting to control this? Anybody has the similar experience or know how to resolve it?

Many thanks,

Tom

⟐ Commented июля 14, 2026 at 7:11 GMT-7

I have a 16" Macbook Pro 2021 (A2485) that has a cracked screen but I am able to buy a complete identical model laptop 'skeleton' (minus its original logic board) for less than the price of the repair at Apple.

If I transfer the logic board and Touch ID from my 'working laptop' with the cracked display, into the donor laptop shell, will everything work as normal or will I come up against a few issues?

Thanks!

⟐ Commented июля 08, 2026 at 12:08 GMT-7

⟐ Answered июля 07, 2026 at 6:23 GMT-7

About a week ago these visual issues have started, which I have assumed were linked to the flex cable that goes into the display assembly itself, making it impossible to fix.

The issue is triggered either by pressing the plastic bottom bezel at the left corner, or by moving the orientation of the screen.

I put my laptop for sale on a local marketplace, and someone called today saying the same happened to his 16" M1 Pro. He told me a repair shop has successfully repaired it by replacing a ribbon cable hidden behind the said plastic bezel strip, and the repair cost him very little money.

Does anyone have any idea about what exactly could've went bad so I can explain it to technicians that would attempt a repair for the laptop?

So far, I've just been quoted a full display assembly replacement costing from 800 to 1000€, which isn't an option. Thanks

- Hard to see on camera, but that region of the chin bezel > display seems to have kind of a bloated/warping effect.

⟐ Answer accepted июля 06, 2026 at 15:05 GMT-7

These Macbooks are now around 4-5 years so it's not a bad idea to replace the thermal paste.

They're not obsolute so there will still be users who can benefit from a guide.

Update:

So I was able to open the MacBook and disassemble the motherboard with the video.

Since I'm comfortable around electronics (this isn't my first time opening up a MacBook, laptop, or even a smartphone), I did choose to replace the thermal paste on the cpu and gpu.

And honestly, after four years of service... Kind of disappointed about the original paste. Dan said that paste will last longer now due to improvements, but the original paste was crumbly as hell. Furthermore I noticed small blank spots on the cpu and it's heatsink, so not very good spread. The gpu did have a good spread. They definitely were generous with the paste on the gpu, because its surroundings were covered with paste too.

Cleaning wasn't difficult, as I said the paste was in a very crumbly state.

After cleaning I gave the copper plates of the heatsink and the cpu and gpu some time to evaporate the alcohol.

I used Noctua NT-H2 and used the "X" to spread the paste on both cpu and gpu.

The only annoying experience was to place back the motherboard in the case. I needed multiple attempts because there was always some small connector/ribbon cable underneath the motherboard. Ugh! After playing like an octopus for a while, I was able to place the motherboard back and with all connectors/ribbon cables out on top of it.

It's do-able but only for people who have a steady hand and... most of all... lots and lots of patience. Take your time. Take some breaks if you get tired or frustrated because the moment that you attempt to work a bit faster or anything like that... something will go wrong. I 100% guarantee that.

I made only one mistake. The connector cable from the left fan is incredibely fragile due to its L-shape (that's what I think). In trying to get the L-shape cable from underneath the board to the top on the board, I got a small tear in the ribbon cable. This fan no longer works. We learn from our mistakes. Should've taped the connector on top of the fan, I wouldn't had an issue to "fish" for the cable since it can't get trapped underneath the board that way. Already ordered a replacement fan.

The temperatures are amazing though. In idle I went from 60-63° to 46-51°. The one remaining fan is also a lot quieter. I'm not going to claim this huge difference to the new paste though. There was so much built up dust in the MacBook... I was genuinely surprised that the MacBook didn't have much higher temps in idle. Both fans were completly covered up in thick dust, and the outlets on both fans same thing. How it managed to get some kind of airflow through those thick dust is a mystery to me.

Anyway, I am very happy with the result. Yes, I did damage one fan connector, but one can only learn with making mishaps.

⟐ Commented июня 30, 2026 at 9:51 GMT-7

I’m hoping someone can help me troubleshoot a serious issue.

About a week ago, I purchased a complete display assembly from iFixit for my 16-inch MacBook Pro (Late 2023) and followed the repair guide to replace the screen. The repair appeared to be successful. The MacBook powered on normally and I used it daily for about a week without any problems.

This morning, I initiated a macOS Tahoe update. During or after the update process, the computer became completely unresponsive.

Current symptoms:

• No signs of life at all.
• Screen remains black.
• No startup chime.
• No keyboard backlight.
• No response when opening the lid.
• No response when holding the power button for 10+ seconds.
• No visible indication that the machine is charging.

My biggest concern is that I do not have a recent backup of my data.

My questions are:

1. Has anyone experienced a MacBook Pro becoming completely unresponsive after a macOS Tahoe update?
2. Could this be related to the display assembly replacement, even though the computer worked perfectly for a week afterward?
3. Are there any recovery steps I should try before opening the machine again?
4. Is there a way to revive the system using DFU Restore or DFU Revive, and if so, would that preserve my data?
5. If the logic board has failed, what are my options for recovering the data stored on the internal SSD?

Any guidance would be greatly appreciated. I want to avoid making the situation worse and would like to preserve my data if possible.

Thank you.

⟐ Commented июня 26, 2026 at 14:22 GMT-7

⟐ Answered июня 09, 2026 at 18:32 GMT-7

I wasn't on the laptop at the time it restarted. I was doing some cleaning in the room and happen to hear that low chime tone noise, the one that I think is pretty standard across the board for when any laptop or computer is restarted or turns on. Everything was working normal before the restart occurred, and even after, things seem to be normal.

I do have a couple cats that I have to yell at from time to time if I catch them walking across the keyboard, maybe it's possible they stepped on a particular key combination which triggered the reason for this situation. I really don't have a clue. I haven't experienced any issues so I don't feel too concerned about it, for now anyway.

This is just out of pure curiosity, I was wondering if anyone had any knowledge in understanding anything on all that code stuff in the "Details" report that I'm able to pull up on the problem and reason for restart?

I appreciate any information anyone has on this matter and thank you very much for taking the time out of your day to give me some tips or insight to help me understand this a little better for now and in the future. Thanks again!

⟐ Answered июня 02, 2026 at 6:59 GMT-7

⟐ Commented мая 29, 2026 at 18:33 GMT-7

However, if I shut down macbook, the MacBook can be charged in any way, such as MagSafe, and all USB-C ports can be used.

But the charging power is only 5W.

⟐ Commented мая 26, 2026 at 7:50 GMT-7

• Firefox/YouTube: Video plays without audio.
• Safari/YouTube: Sometimes no audio/video (but seeker moves, subtitles come). Sometimes video just stuck on loading—in which case after a while it tells me to “try restarting the device” if playback doesn’t resume.
• Apple TV: Media cannot load/play. Instantly media player is “killed” for the lack of a better term.
• Apple Music: Track auto skips to next. Similar to Apple TV. It attempts to play, can’t play, then instead of killing the media it skips to next song, repeat.
• Many streaming services in Firefox, Chrome, Safari: The playback technically begins, I can see the seeker/playhead move in time and subtitles come and go, but video is black and there’s no sound.

What’s common in all scenarios is there’s no sound. It happened abruptly one day. Default device is set to “MacBook Pro Speakers”.

More strangely, in the past week I've been having this problem, there have been two times when it became completely fine. That too, mid-playback. And randomly, it goes away too. For example, most recently when it started working again, I was watching a video on YouTube. I pause it for a bit to do something and when I come back and resume it, suddenly there's no sound again.

Further clarifications:

• I opened OBS Studio and added window capture of Firefox while playing a YouTube video. The sound bar was not moving at all.
• I have removed all Bluetooth devices and kept Bluetooth off while I have tested all this.
• It's not just media, no alert sounds are coming either, including the boot-up sound.
• Sound works fine when using a headphone (via aux for example).
• No crackling or weird noise to tell me that speakers are damaged in any way. When they started working again twice randomy during the last week, they worked 100% fine with complete clarity and volume.

Video here.

MacBook Pro 16-inch 2021 with Apple M1 Pro, 16 GB RAM, and Sequoia 15.5 operating system.

⟐ Commented мая 02, 2026 at 9:54 GMT-7