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In June 2017 Apple updated its 13" MacBook Air with a newer Broadwell Intel Core i5 processor, resulting in slightly increased performance and battery life.

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Help me fix non-functioning down key in MacBook Air (I have all parts)

Hi, can you help me with the non-functioning down key on my MacBook Air 2017?

I looked here, and it looks like I’m on the right track: How to replace the Arrow keys (bottom))

All the parts remain:  The black cover, The white mechanism and The white nipple

I tried using my screwdriver to push on the metal circle underneath where the nipple would go to see if it was a problem with my keyboard. When I press on that, the down key functions.

However, when I reassemble the whole key, it does not. What do I need to do to fix this?

Am I assembling it wrong? I followed this video: https://www.youtube.com/watch?v=E8ncRaFM...

It looks like what I did is right, but the nipple slides all over the place, and even I use my screwdriver to press it to press the button underneath, my cursor does not go down.

Do I need to buy an install a new nipple? It seems like the nipples work as springs, could it have lost its “springiness”?

Or do I need to glue the nipple in place so it doesn’t slide around. I’m afraid if I do that and the down key doesn’t work though, I’ll be in trouble!

For example, I see in this listing to buy a listing a suggestion to glue: https://www.ebay.com/itm/Rubber-Key-Plun...

Please help! Thank you.

Answer this question I have this problem too

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the part https://www.ebay.com/itm/Rubber-Key-Plun... is not used in your system!

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good eye! I wasn't sure but I was only using that as a "glue" example

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Refer to this web page TheBookYard - KeyCap parts MacBook Air click on the image that looks like your keyboard to then drill down to the part’s you need. I would get a new KeyCap, Scissor Mech and Silicone Dome.

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Thanks, it looks like this is what I need, but it's out of stock! Any chance you know of other sources?

https://www.thebookyard.com/product.php?...

This place looks like a possibility, but at almost twice the price:

https://www.replacementlaptopkeys.com/

Can I use any key of the same size? It's my down key that doesn't work but if I ordered a left or right key it would not matter to me, I wouldn't look at it anyway ... although the down key has a little taper at the top

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@andrewch - Sorry I used these folks. Send them a note to ask, in case the web pages wasn't updated.

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@danj thanks Dan!

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AndrewC will be eternally grateful.
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