Ir para o conteúdo principal

Conserte seus objetos

Direito de executar reparos

Loja

Introdução

This serves as the starting point for every repair on your MacBook Pro. You'll need a P5 Pentalobe screwdriver to remove the lower case and get into the device.

For your safety, discharge your MacBook Pro's battery before you begin this procedure. A charged lithium-ion battery can create a dangerous and uncontrollable fire if accidentally punctured.

  1. Before starting this procedure, you must disable your Mac's Auto Boot feature. Auto Boot powers on your Mac when you open the lid, and may be accidentally triggered during disassembly. Use this guide or follow the abbreviated instructions below to disable Auto Boot. This command may not work on all Macs. Power on your Mac and launch Terminal. Copy and paste the following command (or type it exactly) into Terminal:
    • Before starting this procedure, you must disable your Mac's Auto Boot feature. Auto Boot powers on your Mac when you open the lid, and may be accidentally triggered during disassembly. Use this guide or follow the abbreviated instructions below to disable Auto Boot. This command may not work on all Macs.

    • Power on your Mac and launch Terminal.

    • Copy and paste the following command (or type it exactly) into Terminal:

    • sudo nvram AutoBoot=%00

    • Press [return]. If prompted, enter your administrator password and press [return] again. Note: Your return key may also be labeled ⏎ or "enter."

    • You can now safely power down your Mac and open the bottom case, without it accidentally powering on.

    • When your repair is complete and your Mac is successfully reassembled, re-enable Auto Boot with the following command:

    • sudo nvram AutoBoot=%03

    Is this step necessary? I can’t perform this step as I am attempting to repair water damage and need to remove logic board & most likely replace the battery.

    lamajr - Responder

    @mac_medic You definitely don’t want the power coming on while the board is wet. In your case, I think powering on the machine to disable Auto Boot would do more damage than it prevents. I agree, skip this step and be prepared to disconnect the battery quickly if the laptop automatically powers on. Good luck!

    Jeff Suovanen -

    This did not work when running High Sierra.

    Kyle B - Responder

    Tried this on a 2018 MBP 13” Touchbar (there’s no iFixit guide for this model yet). Need to replace a broken screen.

    Luckily I managed to connect to an external screen (Cmd-Down Brightness to switch displays) and enter above command. Seems to work, but there’s another problem with this model - it powers up as soon as any key is pressed……. ffs <gnashes teeth>

    Cool_Breeze - Responder

    I unscrew the battery first and wrap electrical tape over the logic board battery connector before attempting any repairs to the board. Haven’t had any problems yet and I’ve worked on about 10 of these models already. Also when you open the bottom case use a suction cup at the bottom and pull up then run a plastic spudger along the edges to disconnect the clips. Also only use a plastic spudger on the board. Saw a youtube video from a repair shop and he did not disconnect the power and used all metal tools during the entire process of removing the board. His last step was to disconnect the battery terminal.

    Brian - Responder

    Is this step necessary if my mac can turn on? Battery fully dead(

    Nursat b - Responder

    BEFORE YOU START: The included torx head stripped off before I was done (and you might need an additional T4) so stop now and go buy a good one. Also they fail to warn you above to get some blue threadlocker ahead of time.

    Jason Sherron - Responder

    This command did not work for me and I read that sometime in later 2020 Apple stopped this command from working…any ideas on a work around?

    Patrick Machacek - Responder

    Not able to do that with damaged screen

    richardjgreen - Responder

    Hi. This does not work on 2018 13” MacBook Pro with Touch Bar. I did exactly this to disable auto boot. But when I check by using nvram -p it says: auto-boot true. Am I doing something incorrectly? I did everything step by step. Copied and pasted the sudo command, pressed enter and then entered my password. I have Big Sur 11.1 installed. Is there any other way since I need to replace the screen. Thank you. Adrian

    Adrian Vizik - Responder

    Hi everyone. This is also a little pointless if you can’t see anything on the screen, and you don’t have a display adapter to USB C to display it. I agree with Brian about removing the back and disconnecting the battery cable before you even think about opening the lid of the MacBook. Applying the insulation tape is also a handy little tip that just makes sure there is no way to discharge from either the board or battery.

    Roberto Enrieu - Responder

    running `nvram -p | grep 'AutoBoot'` in terminal verifies that it was accepted

    result: `AutoBoot %00`

    Marek Polák - Responder

    This step is completely unnecessary if you follow the guide to disconnect the battery properly. Just put some tape between the battery and logic board connection to prevent it from accidentally touching and therefore powering on the laptop.

    Grant Ormsby - Responder

    It took me a few tries to make this command work, as I was able to copy and paste the command into Terminal, but could not type in my laptop’s password. I finally typed my password into a text document, copied it (command C), and then pasted it into Terminal and it worked.

    tommy404 - Responder

    • Before proceeding, unplug and power down your MacBook. Close the display and lay it on a soft surface, top-side down.

    • Use a P5 Pentalobe driver to remove the six screws securing the lower case:

    • Two 6.2 mm screws

    • Two 5.3 mm screws

    • Two 3.4 mm screws

    • Throughout this repair, keep track of each screw and make sure it goes back exactly where it came from to avoid damaging your device.

    Before any repair is carried out that involves removing the bottom case, the machines auto-boot function has be disabled. This can be disabled via the terminal command “sudo nvram AutoBoot=%00” once the repair has been completed the auto-boot function can be re-enabled via the vermin command “sudo nvram AutoBoot=%03”.

    Aaron Dalziel - Responder

    I recommend that you have an organizer tray for all the small parts, and label it in advance with the numbered “step” associated with each removal of screws and other parts. It really helped me when I needed to put everything back in reverse order, after the new battery is glued in place.

    tommy404 - Responder

  2. Apply a suction handle to the lower case near the front-center area of the MacBook Pro. Lift the suction handle to create a slight separation between the lower case and the chassis.
    • Apply a suction handle to the lower case near the front-center area of the MacBook Pro.

    • Lift the suction handle to create a slight separation between the lower case and the chassis.

    To replace the bottom just line it up just like it came from the factory. Make sure it clears the display connectors. And press firmly down until the clips connect to the bottom again.

    olivia drinkwine - Responder

  3. Insert one corner of an opening pick into the space between the lower case and the chassis. Slide the opening pick around the nearest corner and halfway up the side of the case. This releases the first of the hidden clips securing the lower case to the chassis. You should feel and hear the clip pop free.
    • Insert one corner of an opening pick into the space between the lower case and the chassis.

    • Slide the opening pick around the nearest corner and halfway up the side of the case.

    • This releases the first of the hidden clips securing the lower case to the chassis. You should feel and hear the clip pop free.

  4. Repeat the previous step on the opposite side, sliding your opening pick under the lower case and up the side to pop the second clip free. Repeat the previous step on the opposite side, sliding your opening pick under the lower case and up the side to pop the second clip free. Repeat the previous step on the opposite side, sliding your opening pick under the lower case and up the side to pop the second clip free.
    • Repeat the previous step on the opposite side, sliding your opening pick under the lower case and up the side to pop the second clip free.

  5. Insert your opening pick once again under the front edge of the lower case, near one of the two centermost screw holes. Give the pick a firm twist to pop free the third clip securing the lower case to the chassis. Repeat this procedure near the other of the two centermost screw holes, popping the fourth clip free.
    • Insert your opening pick once again under the front edge of the lower case, near one of the two centermost screw holes.

    • Give the pick a firm twist to pop free the third clip securing the lower case to the chassis.

    • Repeat this procedure near the other of the two centermost screw holes, popping the fourth clip free.

  6. Pull the lower case firmly towards the front of the MacBook (away from the hinge area) to separate the last of the clips securing the lower case. It may help to pull first at one corner, then the other. This may require a lot of force.
    • Pull the lower case firmly towards the front of the MacBook (away from the hinge area) to separate the last of the clips securing the lower case.

    • It may help to pull first at one corner, then the other.

    • This may require a lot of force.

    Difficult to explain clearly, but worked easily for me by gripping the adjacent bottom and top corners then pulling in opposite directions, rather than trying to grip the hinge corner which is too narrow to afford a strong grip.

    Andrew Gordon - Responder

    I initially tried shifting the whole panel off the front after using the separating tool to make some space at the back where the hinges are. I only had luck when I pushed the panel back to it’s normal state and using the separating tool again to open the front, then getting my fingers underneath the slide it off the front was easy. I guess the lesson is to not use the separating tool to “push from the back“.

    Josh Brown - Responder

  7. Remove the lower case.
    • Remove the lower case.

Conclusão

To reassemble your device, follow the above steps in reverse order.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Check out our Answers community for troubleshooting help.

22 outras pessoas concluíram este guia.

Jeff Suovanen

Membro desde: 06/08/2013

344.438 Reputação

257 Guias de autoria

Equipe

iFixit Membro de iFixit

Community

134 Membros

15.565 Guias de autoria

Une ventouse de fixation de crochet sur carrelage,

permet de soulever le fond du macBP.

M. Can - Responder

Adicione um comentário

Exibir estatísticas:

Últimas 24 horas: 11

Últimos 7 dias: 42

Últimos 30 dias: 205

Duração total: 15,480