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The March 2015 update of Apple's 13" MacBook Pro Retina Display, model A1502, features fifth-generation Intel Core i5 and i7 processors and introduces the Force Touch trackpad.

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Keyboard and trackpad failed after battery replacement

Today I replaced the battery in my MacBook Pro 2015, following the excellent iFixIt guide (though not using an iFixIt kit as I can’t buy that where I live). It started up perfectly afterwards (so the battery is working), but the trackpad and keyboard aren’t working.

This seems to be a common problem, with many suggesting a damaged trackpad cable. However, my problem is a bit weird. First thing I noticed is that the trackpad, which has a “fake” clicker, makes a click sound when a press it when the mac is on, though with no input on the Mac.

Secondly, various people recommend resetting NVRAM and SMC. Obviously I assumed this would require an external keyboard, so I connected one and successfully reset the NVRAM (at least, I got the power on sound three times). However, I couldn’t reset the SMC with the external keyboard, so I tried the builtin keyboard… and it worked. The Mac remained off as it was supposed to until I let go and pressed the power button again. I tried resetting the NVRAM using the builtin keyboard, but that didn’t work.

To summarise, the trackpad clicker works, though the trackpad doesn’t. The power button works all the time. The keyboard seems to provide some input while the Mac is off but not when it’s on.

Any suggestions as to how to fix this? Is it likely to be the ribbon cable, given that some things still work?

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A common issue in this series is the ribbon cable that runs across the battery gets damaged. You’ll need to get a replacement cable MacBook Pro 13" Retina (Early 2015) Trackpad Cable Make sure the battery surfaces are clean where the cable crosses and don’t over bend it! Find an old BIC pen ink straw use it as a gage of how far to bend the radius of the cable. Its also important the cable have some play on both sides. That way as the battery swells it doesn’t stress the connections. Here’s the guide to put it in MacBook Pro 13" Retina Display Early 2015 Trackpad Replacement

MacBook Pro 13" Retina (Early 2015) Trackpad Cable Изображение

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MacBook Pro 13" Retina (Early 2015) Trackpad Cable

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Thank you for your help, I bought a replacement cable and it worked! Bending it with a Bic pen really didn't work very well as the ink "straw" seems way too big. In the end, I bent it as best I could and then put the lid on, effectively forcing the fold tighter. Quite scary to do, but it worked, for me at least.

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I ordered and replaced this cable to resolve an inop keyboard (even though when I looked the kybd had its own cable.) I didn’t expect this cable to fix it, but it was cheap enough to try and bam, back in service.

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Was your trackpad making the correct clicking sound before changing the cable?

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David будет вечно благодарен.
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