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Touchpad not working after battery repair.

Today i fixed my macbook pro battery and it went pretty well as this isn’t the first time i have done this. After installing the new battery and booting up my laptop, i gave in my password and everything worked fine (including the touchpad). When i was completely booted up and at my home screen though, the touchpad didn’t function at all (keyboard did). I checked my system information and the keyboard/trackpad appeared like normal… I opened the macbook back up to look for anything wrong, removed the battery, etc. All looked normal. I reset the PRAM, SMC and rebooted a couple times now, no luck. Could anybody help?

Update (02/23/2020)

I inspected the cable, connector and touchpad itself completely. Doesn’t look like anything is wrong… I have attached some photo’s. I’m just left confused, Everything on the motherboard, cables and touchpad seem fine, and i checked in mac os, everything is getting enough power and is showing up. (so it isn’t the battery either)

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Inspect the cable connects are any of the pins bent? As the cable runs across the top of the battery you might have a damaged cable. Heres one source 15” Retina MacBook Pro Trackpad Flex Cable, Apple P/N 821-2652

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I will look for some obvious defects on that cable. Thanks for the tip!

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I inspected the cable, connector and touchpad itself completely. Doesn’t look like anything is wrong… I’m just left confused, Everything on the motherboard, cables and touchpad seem fine, and i checked in mac os, everything is getting enough power and is showing up. (so it isn’t the battery either)

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I would still replace it as I've see what looks like a good cable not be as the cables connector interface can breakdown.

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Just went to an apple store with my trackpad/cable. The told me i knocked a tiny component of the logic board of the trackpad, so i'm looking for a replacement. Could you help? I looking for something thats not too expensive, as i'm a student (this is my main computer for school though, so something like amazon with fast shipping would be amazing).

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Here's the trackpad part: MacBook Pro 15" Retina (Mid 2015) Trackpad The used version is $71 USD.

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