hello, my A2289 MacBook keyboard and trackpad does not work anymore. keyboard backlight is working, Touch Bar is working but I can’t use it. if I connect external keyboard and external mouse all work perfectly, but internal keyboard and trackpad does not work. The Apple Hardware Test completes with the error PPF003 indicating that the fan is not working properly. (PPF004). does it worth try to change keyboard and trackpad? or Maybe I need logic board repair? I take apart trackpad and no signs of corrosion
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Re: A2289 MacBook keyboard and trackpad does not work anymore
Moved post to a new thread . -
Re: A2289 MacBook keyboard and trackpad does not work anymore
This machine is still under warranty.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: A2289 MacBook keyboard and trackpad does not work anymore
Thank you for all your replies.
I cannot really let this Mac go, it was a good deal for me. Anyway after teardown the whole mac I noticed what seems a trace of some kind of liquid flow from a to b in the downside of logic board (photos attached). But I don't see any trace of corrosion or water sensor color change. I cleaned all with 98%alchol and reassembled it. Now apple diagnostics show no error detected (maybe it was just fan ribbon needing to be reseat), but keyboard and trackpad still not working at all. Only key working is finger print, and touch bar display image but don't accept any touch.
I guess I'll try go to the Apple Store and try to get it repaired under warranty.
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Re: A2289 MacBook keyboard and trackpad does not work anymore
Ufortunately, as expected, Apple wont accept fixing this under warranty, as prevous owner declared liquid spill damage, voiding warranty. They simply wanna change bottom case assembly and logic board.
Putting logic board in ultrasonic cleaner can help me even if i can't see any corrosion sign?Comment
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Re: A2289 MacBook keyboard and trackpad does not work anymore
UPDATE.
I found as spare parts one A1989 top case nearby me. So i decided to give a try and buy the A1989 trackpad of this case. Obviously, even if they have same flex cable connector, the A1989 trackpad isn't working when connected to my A2289 logic board. I managed to swap the "new flex" to my old Trackpad and it worked! But not only trackpad, also internal keyboard now work flawless. The A1989 trackpad cable has a different design so it can't be used in A2289. Then waiting for a new trackpad cable I put back my "old" one, and surprisingly it is still working! That mean my trackpad and cable connector was good. I've done literally nothing in this board or keyboard or trackpad, except looking for shorts or visible damaged area. I think that connecting the other trackpad somehow "unlocked" it. Anyway all works good except for TouchBar that dislay image but wont accept touch. That maybe due to touch driving data cable problem, or maybe it neet do be "unlocked" to accept imput as the same as my trackpad. Dunno.Comment
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Re: A2289 MacBook keyboard and trackpad does not work anymore
MacBooks in this model usually require a T2 DFU recovery to bring back the Trackpad and Keyboard. We had this issue when swapping a OEM Trackpad and it would disable it once booted into the OS. A hardware NVRam reset and SMC reset will not fix this, we have to wipe it completely and do a complete recovery for it to fully function. This solved the issue of it not working hope this helps for future laptops you may work on with T2 chips.sigpic
MEOWING IN THE IMPOSSIBLE UNIVERSE!Comment
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Re: A2289 MacBook keyboard and trackpad does not work anymore
Thank you so much for this advice! T2 BrideOS recovery was the first thing I thought about, but since the internal keyboard was NOT working I have found no way to get in DFU. External keyboard doesn't let me do that. Now I will try for touchbar, maybe it will workComment
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Re: A2289 MacBook keyboard and trackpad does not work anymore
Although your internal keyboard doesn’t seem to work I wouldn’t rule it out not working. The keyboard will disable itself once it gets into the OS or recovery. The keyboard will turn on first so you can get into DFU. Always attempt DFU first before ruling the keyboard out.sigpic
MEOWING IN THE IMPOSSIBLE UNIVERSE!Comment
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Re: A2289 MacBook keyboard and trackpad does not work anymore
Unfortunately it was not working for sure, no way to get DFU at all. Only switch a different trackpad and reconnect the old one do the trick! Now keyboard and trackpad works perfectly. Only problem remain the touchbar, it display image but wont accept touch control.
Looking in diagrams i found that there is a component lost:
Can be this the problem? Connectin an other touchbar won't fix, still display but not accept touch controlComment
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Re: A2289 MacBook keyboard and trackpad does not work anymore
Yes, L5100 is a filter for the respective power rail. If missing, can raise your issue.
It is a filter so for now, you can just bridge this component. Ideally, you want to source a replacement inductor for the L5100 but for immediate testing, you can bridge the pads to allow for the power rail to work.Comment
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Re: A2289 MacBook keyboard and trackpad does not work anymore
I'll try to jump it! Thank you
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Hi,
I hope this is the correct place to post about this device. I originally posted regarding this on iFixit so see the details from that post below:
"I'm hoping someone can give their opinion on the symptoms I'm seeing before I spend any more time and put money into this. I got this MacBook from a customer and after looking at it they decided they didn't want it.
It doesn't turn on and there's no visual signs of life. I have tried resetting the NVRAM, SMC, power cycling, unplugging the battery, using the charger with the battery unplugged. Removed the... -
Hey everyone,
Usually, I'm not the type to ask for help, but this time, I'm calling on your wisdom and expertise
I've seen what this community can do, so I'm pretty sure you guys can help me out.
Here's the deal: I noticed my MacBook got stuck in a boot loop. After opening it up and doing some initial troubleshooting, I found that the boot loop stops only when the trackpad is unplugged.
Now, just so you know, the trackpad actually works — I tested it with another motherboard and it's all good. Same for the cable, no issues there. The problem is only... -
Hello all,
I am repairing a Macbook A2337 and i have a problem
The Macbook is stuck in restore as someone before me tried a DFU restore and bricked the device, now i can't do a restore as AC2 throws error 1 which is related to the trackpad.
When i turn on the device i get the trackpad click for a few moments and then nothing, i tried 7 trackpads and 7 trackpad flats, i know all 7 are functioning okay, especially one as i use it for testing and DFU restore.
I inspected the whole board and everything seems fine.
Can anyone help me as i didn't fiddle with trackpad... -
Hello,
I have been following the posts in the forum for some time now and have learned a lot. I would first like to thank you for this and hope that it will continue for a long time.
I received the MacBook in DFU. The recovery always failed with error 1. After some search, I was able to find a defective inductor (LT202).
After replacing the component, I was able to successfully complete the DFU restore. Unfortunately, the trackpad and keyboard where still without function.
So i measured all voltages and diodereadings on the JT400 connector. ... -
Hi everyone. Just a reminder I am not a professional repair technician, fixing Apple electronics is my hobby.
Recently got my hands on MacBook Pro A2289 with interesting behavior. Pristine condition, no water damage, no visual issues whatsoever. It has no image, no CapsLock, no life except the fan is spinning. But it is able to boot into DFU and recognized by another MacBook. I tried to revive and restore the laptop, but the process ends when the MacBook usually should show an Apple logo with a progress bar. I assume the main power lines and T2 are working. It seems like the Intel...
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