Retina MacBook 2017 Logic Board Replacement

Introduction

Use this guide to replace the logic board in your Retina MacBook 2017.

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Étape 1 Disable Auto Boot

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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

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Étape 2 Unfasten the lower case

Retina MacBook 2017 Logic Board Replacement, Unfasten the lower case: étape 2, image 1 de 1

Outil utilisé dans cette étape :

Magnetic Project Mat

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Before proceeding, unplug and power down your MacBook. Close the display and lay it on a soft surface, top-side down.
Remove the following eight screws securing the lower case:
Two 1.8 mm P5 Pentalobe screws
Four 2.9 mm P5 Pentalobe screws
Two 6.1 mm P5 Pentalobe screws
Note the orientation of the screws as you remove them—they need to be reinstalled at a slight angle.
Throughout this repair, keep track of each screw and make sure it goes back exactly where it came from to avoid damaging your device.

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Étape 3

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Wedge your fingers between the upper case and the lower case, starting from the rear of the MacBook between the hinges.
Lift the lower case only slightly to avoid damaging the cables that connect the lower case to the upper case.
Keeping a firm grip, lift steadily until the lower case separates slightly from the upper case.
You may experience a lot of resistance when lifting the lower case. If necessary, slide an opening pick or other ESD-safe pry tool down the side edges of the lower case to pop the two hidden retaining clips free.
During reassembly, to re-engage the clips, press firmly near both side edges of the lower case (near where the pick is inserted in the third image) until you hear the clips snap into place.

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Étape 4

While holding the lower case in place, carefully flip the MacBook over so the Apple logo faces up.

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Étape 5

Lift the upper case and display together from the front edge and raise it to about a 45˚ angle.
It may be helpful to prop the MacBook open in this position for the next step.

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Étape 6

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Use the flat end of a spudger to press and hold the small gold 'battery disconnect' button.
If the power LED is lit up, continue holding the button until the LED goes dark, and then release. This may take up to 10 seconds.
If the LED does not light, release the button after 5-10 seconds. Press and hold it again for 5-10 seconds, and release. Finally, press and hold it a third time for 5-10 seconds, and release.
This step ensures the MacBook is fully powered down and safe to work on.

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Étape 7

Close the MacBook and carefully flip it upside-down.

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Étape 8

Lifting from the front edge, open the lower case to an angle of about 45°.
Take care not to damage the ribbon cables that still attach the lower case to the MacBook.

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Étape 9

Outil utilisé dans cette étape :

Tweezers

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Use tweezers to peel back the tape covering the trackpad cable ZIF connector.

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Étape 10

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Use a spudger to carefully flip up the retaining flap on the trackpad cable ZIF connector.

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Étape 11

Disconnect the trackpad ribbon cable from the trackpad by pulling it gently through its slot in the frame.

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Étape 12

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Carefully close the MacBook and flip it over once again, so that the Apple logo faces up.
Lifting from the front edge, raise the upper case/display assembly to about a 90° angle, and prop it up against something sturdy so you don't have to hold it.
Add a piece of tape near the track pad to secure the upper case and prevent accidental movement.
It's possible to open the MacBook all the way and lay both sides down flat, but this may damage the flex cables and is not recommended.

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Étape 13

Remove the single 2.9 mm T5 Torx screw securing the battery connector to the logic board.

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Étape 14

Outil utilisé dans cette étape :

Battery Blocker

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As an added precaution, you may physically disconnect the battery by inserting a battery isolation pick between the logic board and the battery connector.

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Étape 15 USB-C and Audio Jack Disconnect

Retina MacBook 2017 Logic Board Replacement, USB-C and Audio Jack Disconnect: étape 15, image 1 de 1

Remove the two screws securing the USB-C port cable bracket:
1.1 mm Phillips #00 screw
Some variations of this model may use a Tri-point Y00 screw.
3.5 mm T5 Torx screw

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Étape 16

Use the flat end of a spudger to disconnect the USB-C port cable bracket by prying it straight up from the logic board.
To reconnect this cable, first line up the metal bracket over the screw holes, then press down on the middle of the bracket. Make sure it's aligned correctly, or you may damage the connector.

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Étape 17

Use a spudger to flip open the retaining flap on the audio jack board cable ZIF connector.

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Étape 18

Disconnect the audio jack board ribbon cable by pulling it straight back out of the ZIF connector.
During reassembly, orient the ribbon cable so the white stripe faces you. Insert the cable until the white line disappears under the socket.
At this point it is possible to open the macbook all the way and to lay it flat on a table without causing any damage to the flex cables.

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Étape 19 Lower Case Assembly Removal

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Retina MacBook 2017 Logic Board Replacement, Lower Case Assembly Removal: étape 19, image 2 de 2

Outil utilisé dans cette étape :

Tweezers

$4.99

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Use tweezers to peel back the tape covering the display cable connector.

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Étape 20

It's possible the metal retaining flap on the display cable connector may flip open, remaining stuck to the tape.
If so, use the flat end of a spudger to hold down the retaining flap while peeling the tape away with the tweezers.

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Étape 21

Use the flat end of a spudger to flip open the retaining flap on the display cable connector.
Try to keep it clear of the tape, or it may re-adhere and make cable removal difficult.

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Étape 22

Retina MacBook 2017 Logic Board Replacement: étape 22, image 3 de 3

Outil utilisé dans cette étape :

iOpener

$12.99

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Carefully slide the flat end of a spudger underneath the display cable to separate the adhesive holding it to the lower case.
Take care not to damage the cable. If the adhesive is very strong, heat the case directly beneath the cable with an iOpener to soften the adhesive, and then try again.

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Étape 23

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Hold the retaining flap open.
Disconnect the display cable by gently pulling it straight out of its connector.
Immediately close the retaining flap. Keep it closed throughout your repair.
During reassembly, keep the flap closed while you insert the display cable. Remember to orient the cable so its gold contacts face down, making sure not to crimp or fold it—it'll click into place when it's connected.

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Étape 24

Separate the upper case assembly from the lower case assembly.

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Étape 25 Logic Board

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Retina MacBook 2017 Logic Board Replacement, Logic Board: étape 25, image 3 de 3

Outil utilisé dans cette étape :

Tweezers

$4.99

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Use tweezers to peel up the tape covering the two ZIF connectors—one for the right speaker cable, and one for the audio jack board cable.

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Étape 26

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Use the point of a spudger to flip up both ZIF connector retaining flaps.

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Étape 27

Carefully pull straight back on the two pieces of tape you just peeled up to disconnect the two ribbon cables.

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Étape 28

Use the point of a spudger to peel up the foam pad covering the two antenna connectors.

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Étape 29

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Insert one arm of your angled tweezers under the metal neck of the first antenna connector and pry up to disconnect it.
The antenna connectors and sockets are extremely fragile. Be very careful to lift only on the connector, and not on the socket itself. Do not lift under the cable, or put any unnecessary strain on it.

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Étape 30

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Pry up the second antenna connector to disconnect it.
The antenna connectors and sockets are extremely fragile. Be very careful to lift only on the connector, and not on the socket itself. Do not lift under the cable, or put any unnecessary strain on it.

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Étape 31

Use a spudger to disconnect the left speaker cable connector by prying it straight up from the logic board.

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Étape 32

Use a spudger to flip up the retaining flap on the trackpad cable ZIF connector.

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Étape 33

Disconnect the trackpad cable from the logic board by gently pulling it straight out of its connector.
During reassembly, check that your ZIF connector flaps are flipped up before reinserting their cables.

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Étape 34

Remove the single 3.5 mm T5 Torx screw securing the logic board to the lower case.

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Étape 35

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Flip up the front edge of the logic board.
Handle the logic board only by its edges.
Lift and detach the EMI tape securing the logic board to the lower case.
If the tape feels stuck, heat it with a hair dryer or iOpener to soften the adhesive.
Reattach the tape securely during reassembly.