2011年後期モデル番号A1278 / 2.4 GHz i5 or 2.8 GHz i7 プロセッサー

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Trackpad cursor moving around on its own and clicking anywhere

Hello.

I own a Macbook Pro Late 2011 model and recently the trackpads cursor is behaving weirdly, like it moves around on its own, it clicks anywhere.

I am guessing I need to change my trackpad ?

MacBook Pro 13" Unibody (Mid 2009-Mid 2012) Trackpad

Will the trackpad on above link help me ? Do I need to check model number A1278 ?

or just 'Mid-2009--Mid-2012' is good enough to assume it will work with my laptop.

Thank you

Update (07/16/2018)

even the vertical page scrolling sometimes does not work

MacBook Pro 13" Unibody (Mid 2009-Mid 2012) Trackpad画像

製品

MacBook Pro 13" Unibody (Mid 2009-Mid 2012) Trackpad

$89.99

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the cursor erratic behavior seems to have stopped today but the 2 finger scrolling is not smooth, sometimes I can not scroll.

and then it works smoothly.

Using the coconutbattery app I found out that MBP battery had 1643 cycle count.

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Sounds like you have two problems here! A battery which also needs to be replaced. As you can see here you've exceeded its lifespan! Determine battery cycle count for Mac notebooks

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Before buying a new trackpad I'd open the Mac and make sure the battery is not swollen. A defective battery might push on trackpad and cause the symptoms you're experiencing.

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the cursor erratic behavior seems to have stopped today but the 2 finger scrolling is not smooth, sometimes I can not scroll.

and then it works smoothly.

Using the coconutbattery app I found out that MBP battery had 1643 cycle count.

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I checked with a vendor. The battery does not seem to be swollen.

Can't we figure out if the battery is swollen without opening the mac ?

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No, not possible, it needs visual inspection. You just need a small philips screwdriver to open the bottom, your fingers to unplug the battery connector, and a tri-winged screwdriver to remove the two battery screws. It just takes 10mins to do all.

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The part you need is part number 922-9063 which is what the link you have is, you’re good to go!

Here’s the IFIXIT guide you’ll need to follow: MacBook Pro 13" Unibody Late 2011トラックパッドの交換

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jiten shah さん、ありがとうございました!
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