1 - 3 heures
My daughter's Macbook Air's keyboard stopped working apparently due to water damage.
Couldn't have gone better. The instructions were clear, precise and easy to follow and the procedure took about an hour in total.
My daughter is so happy her machine is working again. Thank you so very much.
Just make sure you have a clean workspace and the right tools (ifixit sells the pentalobe driver that you will need or a kit that includes all needed bits. Well recommended...). Also make sure to keep the screws from each step separate so you know where they go when you re-assemble. I used an old egg container to easily separate up to 12 steps worth of screws.