⟐ Commented April 13, 2026 at 16:54 MST

Initially even after charging it a few hours, the Mac would not turn on, so I reopened the case to make sure all the connectors were secure.

Now the Mac turns on, but noticed that the battery is not charging.
I have tried all the required resets.

This is a screenshot after an overnight USB C connection, it still is not charging.

Please advise on what I can do next.
Thank you

The display of the MacBook in question suddenly stopped working. Half an hour before, the MacBook was used with no problems but when it was opened again, the display no longer showed anything. The keyboard light also stopped working.

However, the MacBook itself continued to work software-wise, you could connect a 2nd display and use it without any problems (except the display itself).

Error is also present with active power supply, after PRAM and SMC reset and in single user mode. Accordingly, I assumed a hardware problem at this point.

However, after taking a look into the MacBook, no visible damage could be found.

When turned on, there is also no screen backlight, it stays completely black (and FYI: the battery of the MacBook is very weak).

My question is: Could the Tcon board be defective or could it be the power supply/connection from the LogicBoard to the Tcon board/display, since I got no backlight or any slightly visible changes on the display when turning the macbook on?

And could the keyboard light, which isn't working, also be related to this problem?

Or could another component be the cause?

Otherwise I would have bought a new display and hoped that this would fix the problem, but before I wanted to be sure, that there is no obvious point, which could possibly caused this and I'm not aware of.

Thank you very much in advance.

Thank you,

⟐ Edited September 02, 2023 at 20:40 MST

I carefully followed the MacBook Pro 13" Function Keys 2017 Battery Replacement procedures but the battery is not "seen" by the computer.

I'm about to go through the installation procedures and try to determine why the battery is not connecting (does not show up in any program nor will it charge).

Can you recommend a troubleshooting procedure?

⟐ Edited May 02, 2022 at 13:44 MST

Narayanan Lakshmanan India

⟐ Commented April 14, 2022 at 21:04 MST

⟐ Commented December 24, 2021 at 10:03 MST

After which when trying to boot all I get is power to fans and nothing else…no cap light on keyboard, nothing from the screen …just the fan.

I tried resetting SRAM and PRAM and this would cause the fans to stop/ power down but has not fixed the main issue of not being able to boot.

I got a replacement battery from Ifixit as they said it was possible I got a bad one and I even ordered a new power/flex cable that connects the battery to the logic board as the original one got a bit bent up and figured that could be an issue but still no booting.

I feel I was pretty thorough/ gentle with the repair so not sure what I would of/ could of messed up in the process but any suggestions would be greatly appreciated.

⟐ Commented December 10, 2021 at 11:57 MST

My MacBook Pro has the following symptom: When using WiFi I face a problem that it deactivates itself and constantly tries to connect. As I have already replaced the WiFi antenna of my system I want to know if that maybe is a software related issue.

Someone who know what is the cause of this problem?

⟐ Edited December 07, 2021 at 5:43 MST

SMC and PRM resets to no avail so i assume i am going down the road of digging deeper internally unless anyone has a good way of troubleshooting further without taking back off. After a little searching it seems that the dual port part requires soldering onto the board. Sadly not my area of expertise so trying all other avenues before handing it over to a more skilled fixer. Any ideas very welcome!

⟐ Commented November 27, 2021 at 10:28 MST

⟐ Commented November 23, 2021 at 5:47 MST

Any ideas on how to recover data at least?

Issue: MBP not booting anymore at all. There are some softwares with 1-time keys (cannot be deactivated via internet) on there we’d really like to save along some private data. Apple store wasn’t very helpful, besides proposing a fix for €1000 without even opening it.

Reading through forums, I understand its not easy to read out the SSD bc of the bespoke design. Opened it up, does not terrible at least to my amateur eye. Only the LSI sticker at the USB-C ports turned red.

Would greatly appreciate some tips, also for a recovery expert in EU / GER?

Many thanks

Jan

⟐ Commented August 19, 2021 at 5:59 MST

⟐ Commented August 01, 2021 at 7:34 MST

My mac suddenly did not turn on. I tried to troubleshoot it:

Already tried resetting the SMC

I checked maybe the battery or the charger is not working but they are.

I opened the back lid, remove the battery and try tried to directly power it. The fan works and the CPU is heating up but no chime or signal through the monitor.

I put the battery and see if the fan or CPU will work. The fan works and the CPU is heating up but no chime or signal through the monitor.

Also, whenever I push the power button, I know it is working because it turns on and off the fan.

I’m not really sure what is the problem. I’m guessing that it could be the RAM or the logic board.

Please help. Thanks!

⟐ Commented July 27, 2021 at 5:19 MST

Intro: (SKIP if not interested in the background story lol). I'm new to the forum so sorry if I'm posting this question on the wrong subform (or even website). I have a MacBook Pro 2017 (function keys, 2 cores/4 threads base model with a 256gb SSD) which I need to sell. I need a laptop with much more computing power and it has to run Windows because of work. I see a more powerful MBP as a bad option given the prices of used MBPs and the fact that mobile ryzen chips are so much more competitive than Intel's, and bc I've loved using my Desktop Ryzen 3600 for more than a year now.

Issue: I've happily used my MBP 2017 for over 4 years now, but it recently fell from a short bench (thanks to my cat) and started having strange behaviors. First, CoconutBattery reported 0% battery and charging was impossible according to OS X. Then the CPU started capping out at 1.5ghz while using all 4 threads (but actual CPU performance was like 1 fifth of "normal "according to benchmarks). Then the fan stopped working and CPU/GPU started throttling even more. Then OS X didn't allow me to configure the trackpad, saying there was no external trackpad to configure (even though the internal one was working fine). I did some Google/YouTube research and ended up "diagnosing" the first problem as a faulty connector (the one in the battery daughterboard), thinking this would at least make the battery work properly and I would take it from there.

The thing is, switching that specific cable for a new one FIXED EVERYTHING. This was like 2 weeks ago, and I've been using it since. The first or maybe second time I switched it on, OS X said it didn't recognize my keyboard, but it worked just fine so I didn't worry, and haven't had anything like that happen since. The time after that, the keyboard background light keys stopped working, but they did once I turned the Mac off and on again. It's been 12 days or so and I haven't had/found any other problems. It works just like new (I also reinstalled OS X from scratch).

The real problem is, I'm "convinced" I found the root cause of MOST if not all of the problems, and I'd like to think the keyboard thing was just some software issue and will not happen again. BUT I also want to sell it at a fair price and I don't want to sell something that works "just fine" for a few months and then starts having problems (because of the fall and/or my "faulty" "repairing" skills). Is there any way I can test all the components and make sure they all work as they should? I've thought of a few options: I can do CPU/GPU stress test, and I guess I could try checking every key, one by one, to see whether they all work, which I've done to some extent but, is there any software or suite which can do that (other than Apple Diagnostics, which according to Louis Rossmann is useless in most cases)? Or should I just keep using it for a month and see what happens? Or should I take it to an UNAUTHORIZED repair center and have them check it out? (I don't trust Apple "certified" repair services because they switch whole components -i.e. motherboard, screen- instead of specific faulty parts -transistors, backlight- and thus charge insane prices and produce a ton of waste, and also I'm in Mexico so I don't currently have access to an Apple Store, and I trust "certified" services here even less).

Thank you if you've made it this far. I really appreciate it.

⟐ Reopened July 06, 2021 at 11:20 MST

PS: I already tried the SMC reset & PRAM reset, etc, to help with the keyboard issue, but nothing worked. I’ve heard about a swollen battery causing issues to keyboard and trackpad, but this battery is so new and has been working perfectly and doesn’t heat up and holds charge as usual, so I don’t think that’s what’s causing the issue.

The video is pretty self explanatory. I have no idea what happened. It just started without any physical trauma.

Suddenly the computer stopped working, not showing signs of life, so I decide to open it to see if there was something understandable at first glance.

I find the schematics online and identify the component that has burn marks, the component in question is the inductance L2950 which is short-circuited to the ground, together with components C2951 and C2952. Trying to remove L2950 and C2952 the short circuit remains, which if I understood correctly from the brd file recovered on the network could be caused by the component present on the back of the card always near the two type-c ports named as U2800. Is there anyone who can tell me where I could find if he was the problem with the U2800 integrated circuit? Some advice? Anyone who has had the same problem? If it cannot be resolved, can you tell me what is the method to recover data from the SSD disk that has proprietary attack?

In leaving you to the attached photos I thank anyone who can leave me a comment, thank you very much.

⟐ Commented April 06, 2021 at 16:50 MST

⟐ Commented March 06, 2021 at 4:34 MST