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BestFixing Lab

Mac laptop · 2015–2017

Repairing a 12″ Retina MacBook in Barcelona: the butterfly keyboard

This is the laptop where the butterfly mechanism was born: the thinnest keyboard Apple has made, and also the one that gave it the most trouble.

4,6 out of 5 · 138 reviews on Google

Documented design fault

A mechanism with no room for dust

The butterfly keyboard cuts key travel down to almost nothing. In exchange, there is barely any space between the key and its base, and a particle that would simply rattle around in another laptop jams the mechanism here. The symptoms Apple eventually described are three: keys that repeat letters, keys that do not respond and keys that feel sticky.

Apple opened a service programme in June 2018 and widened it in 2019 to cover every laptop with this keyboard, with four years of coverage from purchase. That programme closed in November 2024, so no 12″ MacBook goes through that door any more: today it is an ordinary workshop repair.

The other quirk of this model is that everything runs through a single USB-C port, which charges and connects at the same time. When that port works loose or gets dirty, the laptop looks dead without being dead, and that gets checked before anyone mentions the logic board.

What we see most on this model

  • Keys that repeat or type nothing

    The classic butterfly symptom. Sometimes a deep clean of that one key sorts it; sometimes the mechanism never recovers and has to be replaced.

  • It will not charge through its only port

    With a single USB-C, any dirt or wear in the connector leaves the laptop without power. The port gets checked before anyone declares the board dead.

  • Trackpad bulging from the battery

    The cells are glued under the trackpad. If the battery swells, the first warning is that the click stops working. It is not a machine to keep using like that.

Before you bring it in

  • Compressed air rarely does it

    It is the first thing everyone suggests and it sometimes works, but in this mechanism the particle usually sits under the scissor itself, where air will not reach.

  • Keep it shut and crumb-free

    It sounds like a joke and it is not: with this particular keyboard, prevention is half the maintenance. Eating over it is the single most repeated cause we see.

The service this belongs to

This page digs into one specific model. If you want the full picture of what we do with this family of devices, start here:

Similar models with their own page

Frequently asked questions

Can a single key be replaced?

Sometimes yes, when what broke is the scissor or the keycap. When the fault is in the membrane, the repair is bigger. We see which of the two it is at the free diagnosis and tell you before touching anything.

Is Apple’s keyboard programme still running?

No. It ran from June 2018 and Apple closed it in November 2024, once every covered model had passed its four years of coverage. The repair is still possible at an independent workshop.

Is a 12-inch MacBook worth fixing?

As a light second machine, often yes. What decides it is what is wrong: a battery or a port almost always pays off; a full keyboard is a conversation with numbers on the table, and we give you those numbers first.

Shall we take a look?

Tell us what’s wrong and we’ll tell you what it is, what it costs and how long it takes. No obligation, and the initial diagnosis is free.

4,6 out of 5 · 138 reviews on Google

Carrer de Fontanella, 14, bajos · 08010 Barcelona — or drop by Fontanella 14, next to Plaça Catalunya

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