1 rMacBook 12 Keyboard Stopped Working
Hello,
My Macbook keyboard (except the Power button and the trackpad) suddenly stopped working yesterday and I'm unsure which part is defective. No spills or anything of that sort. It was just on, worked on it and left it for an hour so before realizing the keyboard stopped working after I resumed work.
Right now, I've connected an external keyboard so that works. I've resetted the SMC and PRAM/NVRAM to no avail.
After a couple of days struggling to adapt to an external keyboard and the whole setup with the USB hub .... the keyboard miraculously started working again. What in the !&&* is going on...nope. Started acting up again after I let it go to sleep for hours. Opened it back up and not working. Only trackpad, power and I think command, options buttons are working. So odd.
In the meantime, I’ve replaced both the trackpad and keyboard ribbon cables but to no avail. Does this mean it’s time to replace the actual keyboard itself now?
Update (02/16/2020)
Now the trackpad and the select few buttons (except the power) that worked has stopped working.
This really sucks.
I’ve ordered the topcase (without the trackpad) already so i’m really hoping that that’ll fix everything once I able to replace it.
Update:
After disconnecting and reconnecting the trackpad and keyboard ribbon cables, the few keys that did work and the trackpad started working again.
Still going to replace they keyboard/topcase when the part arrives.
Update (02/28/2020)
Unbelievable. I’ve finally replaced the upper case assembly with keyboard and the keyboard is still the only part that doesn’t work. The power button is the only button that works now. I have the original keyboard ribbon cable along with two other replacements ordered from eBay and Amazon but none of them have worked so far.
What could the issue be then? :(
1.1千 
2.6千 
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i've finally solved the issue!
I ordered 2 in total, one off of eBay and one from Amazon. I saw a lot of reviews on Amazon for these cables in general that they're faulty ..etc
I opened the notebook once more to see if I indeed didn't miss anything, so I unplugged the ribbon cable (let's call it #1) and trying turning the macbook on.
Didn't work so I replugged it and only the power button worked.
So I looked at my other two spare ribbon cables, which I tried before and didn't work at that time, and one of them bothered me because of the length.
I had to bend it a little to fit in the connector. I tried that one, bend it a little and just before putting on all the screws again i turned it on an tested the keyboard.
Worked great. Well, I was relieved. So relieved. Spending $100+, got an A+ grade keyboard (this one has quite a few sticky keys!) and all for a faulty ribbon cable that really cost me $13.00
Gddmn.
由 Eric C 完成的