MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement

Introduction

If your MagSafe 2 power adapter has been damaged, you can replace it. Use this guide to install a replacement MagSafe DC-In Board.

What you need

Step 1 Lower Case

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, Lower Case: step 1, image 1 of 1

Remove the following P5 pentalobe screws securing the lower case to the MacBook Pro:
Eight 3.0 mm
Two 2.3 mm

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Step 2

Lifting from the edge nearest the clutch cover, lift the lower case off the MacBook Pro.
Set the lower case aside.

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Step 3 Battery Connector

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, Battery Connector: step 3, image 1 of 1

Peel back the warning label covering the battery connector.

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Step 4

Using the flat end of a spudger, gently pry the battery connector straight up out of its socket on the logic board.
Bend the battery cables back and out of the way, ensuring that the battery connector doesn't accidentally make contact with the logic board.

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Step 5 AirPort/Camera Cable

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, AirPort/Camera Cable: step 5, image 1 of 1

Tool used on this step:

Tweezers

$4.99

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Use a spudger or tweezers to pry the three AirPort antenna cables straight up off of their sockets on the AirPort board.
The cable connection points are fragile. Be careful to lift only on the connector, and not on the socket or cable.
To reconnect, align the connector carefully into position over the socket, and press it down firmly with the flat of your spudger.

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Step 6

Use the tip of a spudger to push the camera cable's plug toward the fan and out of its socket on the logic board.
The plug in the photo has six connections, but some models have twelve connections. The process of removing the plug from its socket is the same for both.
If the camera cable's plug won't come easily out of its socket on the logic board, fold back the rubber cover over the fan to gain access to the cable, then gently pull on the cable while using the spudger to gently push the plug out of its socket.
Be sure to push parallel to the board, first on one side, then the other, to slowly "walk" the plug out of its socket. Do not pry up, or you will damage the socket.

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Step 7

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement: step 7, image 3 of 3

Insert the flat end of a spudger underneath the rubber heat sink cover on the right fan.
Slide the spudger underneath the length of the cover, releasing the adhesive.
Lift the cover and flip it back so that you can access the cables underneath.

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Step 8

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement: step 8, image 3 of 3

Use your fingers to pull the AirPort/Camera cables up off the fan.
The cables are adhered to the fan, so peel them up carefully to avoid damaging them.
Carefully de-route the cables from the plastic cable guide.

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Step 9 I/O Board Cable

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MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, I/O Board Cable: step 9, image 3 of 3

If your I/O Board cable's connectors have notches in the padding, you will need to release a locking lever underneath the notch in order to remove the cable. If this is the case, don't pry up on the connector until the levers are unlatched.
Using the flat end of a spudger, pry the I/O Board connector straight up out of its socket on the logic board.
During reassembly, connect this end first, as it does not flex.
In a similar fashion, remove the I/O Board cable connector from its socket on the I/O Board.
Remove the I/O Board cable from the MacBook Pro.

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Step 10 Airport Card

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, Airport Card: step 10, image 1 of 1

Remove the single 2.9 mm T5 Torx screw securing the AirPort card to the logic board.

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Step 11

Grasp the sides of the AirPort card and lift it up to a shallow angle (5-10˚) to separate the light adhesive adhering it to the logic board.
Pull the AirPort card parallel out of its connector on the logic board to remove it.

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Step 12

Use the tip of a spudger to flip up the retaining flap on the right fan ribbon cable ZIF socket.
Be sure you are prying up on the hinged retaining flap, not the socket itself.
Starting at the top of the cable, slide a plastic opening tool under the right fan cable to free it from the logic board.
Use caution when freeing the cable, as it is strongly adhered to the logic board.

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Step 13

Remove the following three screws securing the right fan to the logic board:
One 4.4 mm T5 Torx screw
One 3.9 mm T5 Wide Head Torx screw
One 5.0 mm T5 Torx screw with 2 mm collar

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Step 14

Lift and remove the right fan out from the MacBook Pro.
When reinstalling the fan, it's easiest connect the fan ribbon cable as you drop the fan in place, rather than after you've installed the three fan screws.

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Step 15 Left Fan

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, Left Fan: step 15, image 1 of 1

Use the flat end of a spudger to lift the rubber heat sink cover up off the left fan.

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Step 16

Remove the following three screws securing the left fan to the logic board:
One 4.4 mm T5 Torx screw with 2 mm collar
One 5.0 mm T5 Torx screw with 2 mm collar
One 3.9 mm T5 Wide Head Torx screw
When reinstalling the fan and its screws, don't fully torque the screws until you've first installed all of them loosely, so that the fan can move a little and position itself properly as you insert the screws into their threaded standoffs.

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Step 17

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement: step 17, image 3 of 3

Use the tip of a spudger to flip up the retaining flap on the left fan ribbon cable ZIF socket.
Be sure you are prying up on the hinged retaining flap, not the socket itself.
Starting at the top of the cable, slide a plastic opening tool under the left fan cable to free it from the logic board.
Use caution when freeing the cable, as it is strongly adhered to the logic board. If necessary, use an iOpener or hair dryer to heat the cable in order to soften the adhesive and make it easier to remove.
Lift the left fan out of the device.
When reinstalling the fan, it's easier to connect the fan ribbon cable as you drop the fan in place, rather than after you've installed the three fan screws.

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Step 18 SSD

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, SSD: step 18, image 1 of 1

Remove the single 3.1 mm T5 Torx screw securing the SSD to the logic board.

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Step 19

Slightly lift the rightmost side of the SSD and firmly slide it straight away out of its socket on the logic board.

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Step 20 I/O Board

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, I/O Board: step 20, image 1 of 2

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, I/O Board: step 20, image 2 of 2

Use the tip of a spudger to flip up the I/O board data cable lock and rotate it toward the battery side of the computer.
Use the flat end of a spudger to slide the I/O board data cable straight out of its socket on the logic board.
Do not lift up on the I/O board data cable, as its socket is very fragile. Pull the cable parallel to the face of the logic board.

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Step 21

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement: step 21, image 3 of 3

Remove the two 3.1 mm T5 Torx screws securing the I/O board to the logic board.
On some models, also removing the silver 3.5 mm T5 Torx screw from the heatsink can aid in I/O board removal.
Carefully lift the I/O board and remove it from the lower case.

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Step 22 Logic Board Assembly

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, Logic Board Assembly: step 22, image 1 of 1

Use the flat end of a spudger to pry the headphone jack connector up from its socket on the logic board.

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Step 23

Use the flat end of a spudger to pry the left speaker connector up and out of its socket on the logic board.
Use the tip of a spudger to pry the right speaker connector up and out of its socket on the logic board
Be sure to pry on the cable head, and not on the socket itself. Prying on the socket may cause it to separate from the logic board.

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Step 24

Peel back any tape covering the keyboard ribbon cable connector.

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Step 25

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement: step 25, image 3 of 3

Use the flat end of a spudger to flip up the retaining flap on the keyboard ribbon cable ZIF socket.
Pry only under the hinged retaining flap, not the socket itself, or you may break it off the board.
Use the flat end of a spudger to gently back the keyboard ribbon cable out of its socket by pushing first at one side, then the other.

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Step 26

Use the flat end of a spudger to pry the trackpad ribbon cable connector up from its socket on the logic board.

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Step 27

Use the flat end of a spudger to pry the keyboard backlight connector up from its socket on the logic board.

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Step 28

Use the tip of a spudger or your fingernail to flip up the retaining flap on the microphone ribbon cable ZIF socket.
Be sure you are prying up on the hinged retaining flap, not the socket itself.
Pull the microphone ribbon cable out of its socket.

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Step 29

Use the tip of a spudger to pry the display data cable lock and rotate it toward the DC-In side of the computer.
Pull the display data cable straight out of its socket on the logic board.
Do not lift up on the display data cable, as its socket is very fragile. Pull the cable parallel to the face of the logic board.

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Step 30

Use the flat end of a spudger to carefully pry off the rubber screw cap on the raised screw head near to the MagSafe 2 connector.

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Step 31

Remove the following six screws securing the logic board to to the upper case:
One 2.6 mm T5 Torx screw
Two 5.8 mm T5 Torx screws
One 3.8 mm T5 Torx screw
One 5.2 mm Raised Head T5 Torx screw
One 3.5 mm Silver T5 Torx screw

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Step 32

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement: step 32, image 3 of 3

Lifting from the side nearest the battery, rotate the logic board toward the top of the MacBook Pro.
Using the flat end of a spudger, carefully push the MagSafe 2 connector out of its socket on the bottom of the logic board.
When reinstalling the logic board, check the cables at the marked locations to make sure they don't get pinned underneath the logic board.
Clockwise from top: keyboard, trackpad, battery, right speaker, keyboard backlight, display, microphone, headphone jack, left speaker.

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Step 33

Remove the logic board assembly from the MacBook Pro.

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Step 34 MagSafe DC-In Board

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, MagSafe DC-In Board: step 34, image 1 of 2

MacBook Pro 15" Retina Display Mid 2012 MagSafe DC-In Board Replacement, MagSafe DC-In Board: step 34, image 2 of 2

Rotate the device 180 degrees to more easily access the rest of the internal components.
Remove the two 2.5 mm T5 Torx screws securing the MagSafe DC-In board to the upper case.
Slide the MagSafe DC-In board towards the right free it from its recess within the upper case.
Lift and remove the MagSafe DC-In board out of the upper case assembly.