Mac Mini Late 2012 Power Supply Replacement Repair Guide

Difficulty

Difficult

Steps

Time Required

                          45 minutes - 1 hour

Sections

Bottom Cover
2 steps
Fan
3 steps
Cowling
2 steps
Antenna Plate
4 steps
Logic Board
6 steps
Hard Drive
1 step
Power Supply
4 steps

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Introduction

What you need

Step 1

              Bottom Cover

Place your thumbs in the depressions cut into the bottom cover.
Rotate the bottom cover counter-clockwise until the white dot painted on the bottom cover is aligned with the ring inscribed on the outer case.
You do not need to apply much downward pressure while turning.

Place your thumbs in the depressions cut into the bottom cover.

Rotate the bottom cover counter-clockwise until the white dot painted on the bottom cover is aligned with the ring inscribed on the outer case.

You do not need to apply much downward pressure while turning.

1024

Step 2

Tilt the mini enough to allow the bottom cover to fall away from the outer case.
Remove the bottom cover and set it aside.

Tilt the mini enough to allow the bottom cover to fall away from the outer case.

Remove the bottom cover and set it aside.

Step 3

Fan

Remove the two 11.3 mm T6 Torx screws securing the fan to the logic board near the antenna plate.

Remove the two 11.3 mm T6 Torx screws securing the fan to the logic board near the antenna plate.

Step 4

Lift the ear of the fan nearest the RAM up off the standoff secured to the outer case.
Removing the standoff screw is not necessary to remove the fan. You need only raise the fan enough to lift it off the standoff screw.

Lift the ear of the fan nearest the RAM up off the standoff secured to the outer case.

Removing the standoff screw is not necessary to remove the fan. You need only raise the fan enough to lift it off the standoff screw.

Step 5

Lift the fan out of the mini for enough clearance to access its connector.
Grab all the wires at once and gently pull straight up to disconnect the fan from the logic board.
Do not pry at the socket, or you may rip it from the logic board.
Remove the fan.

Lift the fan out of the mini for enough clearance to access its connector.

Grab all the wires at once and gently pull straight up to disconnect the fan from the logic board.

Do not pry at the socket, or you may rip it from the logic board.

Remove the fan.

Step 6

              Cowling

Remove the single 3.5 mm T6 Torx screw securing the cowling to the heat sink.

Remove the single 3.5 mm T6 Torx screw securing the cowling to the heat sink.

Step 7

Lift the cowling from the end nearest the antenna plate.
Rotate the cowling away from the outer case and remove it from the mini.

Lift the cowling from the end nearest the antenna plate.

Rotate the cowling away from the outer case and remove it from the mini.

Step 8

              Antenna Plate

Remove the following screws securing the antenna plate to the mini:
Two 6.6 mm T8 Torx screws
Two 5.0 mm T8 Torx or 2.0 mm Hex screws (either screwdriver will work)
When putting back together:
It can be difficult to get the hard drive seated correctly such that the antenna plate fits in place correctly. If the screw holes don’t line up with those on the hard drive, make sure that the two pins that are in the back of the hard drive are properly seated in the holes at the back of the case, above the housing for the second hard drive.
The antenna attaches directly to the hard drive (red markers), therefore attaching the antenna can move the hard drive around and loosen the connection of the hard drive cable to the logic board.

Remove the following screws securing the antenna plate to the mini:

Two 6.6 mm T8 Torx screws

Two 5.0 mm T8 Torx or 2.0 mm Hex screws (either screwdriver will work)

When putting back together:

It can be difficult to get the hard drive seated correctly such that the antenna plate fits in place correctly. If the screw holes don’t line up with those on the hard drive, make sure that the two pins that are in the back of the hard drive are properly seated in the holes at the back of the case, above the housing for the second hard drive.

The antenna attaches directly to the hard drive (red markers), therefore attaching the antenna can move the hard drive around and loosen the connection of the hard drive cable to the logic board.

Step 9

Slightly lift the antenna plate from the end closest to the RAM.
Carefully pull the antenna plate away from the circular rim of the outer case.
Do not remove the antenna plate yet. It is still attached to the AirPort/ Bluetooth board.

Slightly lift the antenna plate from the end closest to the RAM.

Carefully pull the antenna plate away from the circular rim of the outer case.

Do not remove the antenna plate yet. It is still attached to the AirPort/ Bluetooth board.

Step 10

Use the tip of a spudger to carefully pry the antenna connector up from its socket on the AirPort/Bluetooth board.

Use the tip of a spudger to carefully pry the antenna connector up from its socket on the AirPort/Bluetooth board.

Step 11

Remove the antenna plate from the mini.

Remove the antenna plate from the mini.

Step 12

              Logic Board

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

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

Step 13

Use the tip of a spudger to lift the IR sensor connector up and out of its socket on the logic board.
Make sure to pry up from beneath the wires and not underneath the socket.

Use the tip of a spudger to lift the IR sensor connector up and out of its socket on the logic board.

Make sure to pry up from beneath the wires and not underneath the socket.

Step 14

Remove the following three screws:
One 5.0 mm T8 Torx or 2.0 mm Hex screw (either screwdriver will work)
One 16.2 mm T6 Torx screw
One 26 mm T6 Torx standoff

Remove the following three screws:

One 5.0 mm T8 Torx or 2.0 mm Hex screw (either screwdriver will work)

One 16.2 mm T6 Torx screw

One 26 mm T6 Torx standoff

Step 15

To remove the logic board, the two cylindrical rods of the Mac mini Logic Board Removal Tool must be inserted into the holes highlighted in red. Inserting instruments into any logic board holes other than the ones highlighted in red may destroy the logic board.
Insert the Mac mini Logic Board Removal Tool into the two holes highlighted in red. Be sure it makes contact with the top side of outer case below the logic board before proceeding.
Carefully pull the tool toward the I/O board. The logic board and I/O board assembly should slightly slide out of the outer case.
Cease prying when the I/O board is visibly separated from the outer case.
Remove the Mac mini Logic Board Removal tool.

To remove the logic board, the two cylindrical rods of the Mac mini Logic Board Removal Tool must be inserted into the holes highlighted in red. Inserting instruments into any logic board holes other than the ones highlighted in red may destroy the logic board.

Insert the Mac mini Logic Board Removal Tool into the two holes highlighted in red. Be sure it makes contact with the top side of outer case below the logic board before proceeding.

Carefully pull the tool toward the I/O board. The logic board and I/O board assembly should slightly slide out of the outer case.

Cease prying when the I/O board is visibly separated from the outer case.

Remove the Mac mini Logic Board Removal tool.

Step 16

Pull the I/O board/logic board assembly out of the outer case enough to access the power connector.
Use your fingers to disconnect the DC-In cable from the logic board.
Pull the power cable connector toward the front side of the mini.

Pull the I/O board/logic board assembly out of the outer case enough to access the power connector.

Use your fingers to disconnect the DC-In cable from the logic board.

Pull the power cable connector toward the front side of the mini.

Step 17

Carefully slide the logic board assembly out of the mini, minding any cables that may get caught.

Carefully slide the logic board assembly out of the mini, minding any cables that may get caught.

Step 18

              Hard Drive

Pull the hard drive away from the front edge of the mini and remove it from the outer case.
During reassembly, there are two pins on the inside edge of the hard drive that fit into the case. The holes have rubber grommets around them, so it may be difficult to tell when you have seated the hard drive correctly.
There are two pairs of holes in the case. Insert the pins into the holes closest to the bottom of the case.

Pull the hard drive away from the front edge of the mini and remove it from the outer case.

During reassembly, there are two pins on the inside edge of the hard drive that fit into the case. The holes have rubber grommets around them, so it may be difficult to tell when you have seated the hard drive correctly.

There are two pairs of holes in the case. Insert the pins into the holes closest to the bottom of the case.

Step 19

              Power Supply

Remove the 7.9 mm T6 Torx screw securing the power supply and hard drive tray to the outer case.
During reassembly, ensure the cables that run alongside the hard drive are tucked under the power supply. This will ensure the hard drive is properly seated. In addition, the antenna screw holes will not line up if there are cables in the way.

Remove the 7.9 mm T6 Torx screw securing the power supply and hard drive tray to the outer case.

During reassembly, ensure the cables that run alongside the hard drive are tucked under the power supply. This will ensure the hard drive is properly seated. In addition, the antenna screw holes will not line up if there are cables in the way.

Step 20

Pull the silver metal AC-In socket retainer away from the side of the outer case and remove it from the mini.
During reassembly, notice that the silver clip hugs either side of the lower beveled edge of the AC connector. When sliding the clip back in it will hit a stop, but not click into place. You will know that you did it correctly because it will not easily move out of position.

Pull the silver metal AC-In socket retainer away from the side of the outer case and remove it from the mini.

During reassembly, notice that the silver clip hugs either side of the lower beveled edge of the AC connector. When sliding the clip back in it will hit a stop, but not click into place. You will know that you did it correctly because it will not easily move out of position.

Step 21

Rotate the AC-In connector 90 degrees counter-clockwise.

Rotate the AC-In connector 90 degrees counter-clockwise.

Step 22

Slide the power supply out of the mini, minding any cables that may get caught.

Slide the power supply out of the mini, minding any cables that may get caught.

To reassemble your device, follow these instructions in reverse order.

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                    Andrew Optimus Goldheart

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Shakthi Gs - Oct 6, 2016

Hello,

Can you please mention the part number of the powersupply module.

akobelan - Jan 7, 2018

The instructions mention a T6, and T8 screwdrivers. The “Buy these tools” link to T6 and T8 security screwdrivers. There is no mention of the security version of these screwdrivers required. Can someone clarify?

Edward Petrik - Feb 25, 2018

For the late 2012 Apple Mac Mini, You do not need the security version of either the T6 nor the T8. However, I use the iFixit Pro Tech Tool Kit so mine are security torx. Either will work in this case. Goodluck!

(I’ve taken apart plenty of Apple products as well as 3 mac mini’s this week alone 2011, 2012, and 2012. They start using Safety Torx in 2014 to keep “clumsy customers” out. However that does not keep out the enthusiasts ;)

akobelan - Dec 4, 2018

The best advice I can offer following this repair manual is to read all the steps carefully prior to disassembly / assembly. Go at it carefully and methodically. And refrain from caffeine a few days prior. It really sucks to drop a screw inside the case at step 18.

dArKeR - Dec 18, 2021

can the power supply be tested IN PLACE with volt amp meter? i can see the power supply pins after Step 3. many people i see searching for this want to know if their power supply is good or if failure is also the logic board. i would stop disassembly if logic board has failed. also would know if one had to order power supply and logic board immediately/at the same time. Thank you!

Introduction#

What you need#

Team#

Introduction

What you need

Team