Mac Mini Mid 2011 IR Sensor Replacement

Replace a broken IR sensor/sleep LED.

Use this guide to replace your mini's IR sensor/sleep LED assembly. Replacing this component requires removal of the logic board and most other components in your mini.

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Edit 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.

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Edit 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.

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Edit Step 3 Fan  ¶ 

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

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Edit 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.

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Edit Step 5  ¶ 

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

  • Carefully pull the fan cables upward to lift the fan connector up out of its socket on the logic board.

  • Remove the fan.

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Edit Step 6 Cowling  ¶ 

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

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Edit 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.

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Edit 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.

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Edit 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.

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Edit Step 10  ¶ 

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

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Edit Step 11  ¶ 

  • Remove the antenna plate from the mini.

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Edit 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.

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Edit 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.

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Edit 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

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Edit 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.

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Edit 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.

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Edit Step 17  ¶ 

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

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Edit 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.

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Edit 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.

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Edit Step 20  ¶ 

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

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Edit Step 21  ¶ 

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

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Edit Step 22  ¶ 

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

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Edit Step 23 Hard Drive Tray  ¶ 

  • Remove the 7.9 mm T6 Torx screw securing the hard drive tray to the outer case.

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Edit Step 24  ¶ 

  • Remove the hard drive tray from the outer case.

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Edit Step 25 IR Sensor  ¶ 

  • Carefully de-route the IR sensor cables from the channel in the hard drive tray.

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Edit Step 26  ¶ 

  • Remove the 5 mm Phillips screw securing the IR board to the hard drive tray.

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Edit Step 27  ¶ 

  • Remove the IR sensor from the hard drive tray.

  • Be careful when removing the IR board from the hard drive tray, as the lower plastic positioning pin has the tendency to get caught on the delicate IR board.

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

For more information, check out the Mac Mini Mid 2011 device page.

Required Tools

TR8 Torx Security Screwdriver

$5.95 · 50+ In stock

Spudger

$2.95 · 50+ In stock

T6 Torx Screwdriver

$5.95 · 50+ In stock

T6 Torx Screwdriver

$9.95 · 29 In stock

T6 Torx Screwdriver

$4.95 · 50+ In stock

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Comments Comments are onturn off

Does anyone know the part number of the IR sensor and where you can order it?

Jako Verstraate, · Reply

This took a lot of force on my Mac mini. A lot.

nh3, · Reply

I agree. It took a crap ton of force from my thumbs to twist the bottom off.

sleeve,

I accidentally broke the little things that hold the cover to the case. Is there a cheap replacement to the cover? Those clips are held onto it very weakly.

Jacob Halton, · Reply

Don't just use your thumbs... Use your whole palm to twist it, with maybe a thumb in one of the recesses, applying slight downward pressure.

markbart, · Reply

On my mini, the fan has a 3rd screw on the bottom right of its housing just out of sight on the step 3 photo. I believe it was in the hole later referred to as the 26 mm T6 Torx standoff in step 14.

benjamin, · Reply

Remove a third screw at the opposite end of the fan near the DRAM

Craig Foster, · Reply

I needed a T7 for this, and had to remove all three screws before I could take the fan out.

mackrell, · Reply

The fan has in fact, 3 screws that need to be removed before you can lift it out.

FinnCrisp888, · Reply

The 3rd screw needed a T5, for me.

Martin Cleaver, · Reply

Contrary to the instructions, I had to remove the fan screw

radonr, · Reply

Same for me, couldn't get it to move without feeling it was going to break so I just removed the screw.

warrencox,

You actually don't need to disconnect the fan. You can just let it hang on the side while working. I accidentally killed my connector trying to pry it loose. It's being held together now by some tape, after spending hours trying to reconnect it and figuring out pin outs.

Nick Michielsen, · Reply

Be careful to LIFT UP on the fan connector cable. Using a spudger tool helps here. I mistakenly thought that the connector would slide off the logic board and tried to remove the connector this way. I ended up lifting the connector off of the logic board, thus ruining my logic board and requiring a $350 logic board replacement at the genius bar. The second time I did a HD/SSD replacement, everything worked fine.

wattmagner, · Reply

That's probably the must tricky part of the replacement. I did the same thing, i just pull on my cables and the connector stays on the board. Tried many times to switch cables into but any order i try is not the good one.

The avoid this, now, when i want to pull out my fan, i just use a plate screwdriver and lift up the connector. That's work perfectly.

ayottepl, · Reply

in Step 6 — Cowling ; " Remove the single 3.5 mm T6 Torx screw securing the cowling to the heat sink", does it mean that it is the same T6 Torx screw for the cowling and the heat sink ?

In fact at the end, I mess this T6 Torx screw !

cegondaireun, · Reply

Uhh I can't get this to go back in? Not sure what is going on...

David Inman, · Reply

When reassembling this aerial plate, it may take a very strong force to align the side lips with the screw bays. The circular edge on the body is meant to slot into the plate by less than 1mm. I followed the rule of thumb, which is, if it takes an unusual force, stop and think it out to avoid a disaster! Then, I hit on using a paper clip to get around this problem. Make a paper clip L-shaped to loop through a hole close to the edge of the plate, where the slotting is not deep enough. Gently lifting the paper clip, slide and push the aerial plate in place. This worked like a charm without using a strong force.

al dente, · Reply

My only real problem in the whole process was putting back the antenna plate. Couldn't get both side screws to align. Ended up leaving one out but might try the paper clip trick now

andrewarwas, · Reply

I had a similar experience, but when I realized the two 5.0mm T8 Torx screws were 2 of a set of 3 that also served to hold the cover on, I wasn't comfortable with only securing the cover with 2.

UNSC Jon 117,

DO NOT BRUTE FORCE the reinstallation of the plate. In my case, the top lip of the antenna plate has a notch which aligns with the edge of the opening was preventing the perfect fit. All I did in my case was use the spudger to pry open the notch a little more to give me a little bit extra space so that edge of the aluminum enclosure fits into that notch on the top of the antenna plate. Hope that helps. :)

chicosy, · Reply

I was installing an SSD in my mini and when I got to this step, an issue came up. The two 6.6mm screws on the antenna plate screw into one side of, and secure, the hard drive. The problem was the SSD was thinner than the original hard drive, so when I tried to reassemble, the hard drive sat too low for the screws to reach it.

Here's how I got around the problem. I loosely attached the antenna plate to the hard drive, leaving plenty of wiggle room between the plate and the drive. I also left the two stand off screws on the logic board off to give me more wiggle room there.

With the SSD attached to the antenna plate, I carefully connected and stowed the Bluetooth cable. Using the antenna plate as a handle, I was able to guide the SSD into the hard drive mount. Once in place, I tightened the 6.6mm screws more, which raised the SSD to the proper level.

After insuring that the screws all lined up, I installed and tightened the logic board, then the other antenna plate screws.

yourgenius, · Reply

The "engineering tolerances" are definitely tight for the AirPort antenna plate. I would recommend trying to replace it as soon as it's removed for the first time, in order to work out the (precise) alignment of it.

Nothing I tried (including the suggestions here) seemed to help me during reassembly. No matter what I tried, I couldn't get the holes for the two 5.0mm T8 screws to line up. Eventually, I had to resort to CAREFULLY and SLIGHTLY re-bending the curved edge of the antenna plate.

UNSC Jon 117, · Reply

REATTACHING grate - al dente's trick helped me.

The tiny perforations on the grate rest ON TOP of the lip of the case, while the remainder of the grate slides UNDER the lip. It is very hard to see - I used a magnifying glass.

To get it into place, create a tiny hook on the end of a paperclip. Moving along the edge of the grate, lift a perforation with the hook to help it slip into place. Keep moving along the edge until entire grate is shifted into place.

Chris 1000, · Reply

I had several 2-terminal connectors that went to what appeared to be temperature sensors on several components including the hard disk and optical drive. I accidentally pulled the wires out of one of these connectors. Lucky for me, they came out clean and I was able to just re-insert them into the connector

Kyle Jurick, · Reply

On a Mini bought Jan 2014, Red screws were T-9 and orange were 2mm Hex, T-8 didn't work in either one. T-9 didn't work in orange.

michael, · Reply

As everyone else has noted during re-assembly, seating the antenna plate is tricky. For me, what ended up working was to attach the hard drive screws first. After this, with just a little wiggling of the plate, the 2 5mm screw holes lined up perfectly.

jonathansturges, · Reply

Aligning the drive holes with the ones on the antenna grate was easy – just take the pointy end of the spudger. Also, for getting the circular part of the grate set correctly, I had to bend down the outermost part a tiny little bit and then used curved tweezers to lift the grate once it was near its final position to get it slide in the last millimeter. Frustrating at first, but it worked after a few tries.

Julian, · Reply

steps 10 11 13 14 15 16 not necessary …

1 2 3 4 5 6 7 8 9 12 17 only needed to change hard drive …

radioman, · Reply

Step 10 is different for late mini Mac 2012

The antennaplug is different (round)

Josse, · Reply

I skipped steps 10 and 11 but had to do the rest to get the drive out. My system had a second drive so that may be why the logic board had to be removed to have enough room to get the drive out past the DIMM sockets.

Craig Foster, · Reply

On the Late 2012 model the antenna connector is hidden under the case, so unlike as indicated in step 10 you can not see the connector and definitely not remove it until the Logic Board has been eased out an inch. Note how the cable makes a loop under the case as it is removed. Remember to reconnect the same way with the loop and connected before the logic board is pushed in all the way.

Indy, · Reply

The antenna connector is underneath a black flap. I just lifted the flap slightly with a spudger and used my fingers to disconnect.

FinnCrisp888, · Reply

...in the latest delivery of the mac mini they had changed something. The antenna plug is hidden under a plastic cover and some tape on it.

You have to push up the cover and remove the tape...not really difficult, it was formed so you can put up easilly.

Tom, · Reply

If your machine came with a 7mm drive and you are replacing with a 7mm drive you do not need to move the logic board. I installed an Intel 335 240GB drive which is a 9.5mm drive and to get that drive in I did need to bump the logic board out to clear the memory slot brackets. I did not need to remote any other wires or connections as the logic board only needs to move maybe an 1/8" to get the drive to clear the memory bracket.

klaubscher326, · Reply

There's no real need to disconnect the antenna. You can just lay the grill gently on its side and leave it connected.

FinnCrisp888, · Reply

That is true if you do not need to remove the logic board (i.e. you are only replacing the drive in the original slot position).

anonymous 3693,

You can leave the antenna plate attached and remove the logic board if you're careful while removing the motherboard.

Dan Wilson, · Reply

It may just be my own experience, but the hard drive connectors appear to be "sensitive" to ANY pressure, even when (re)connected properly. I found that I had to repeatedly re-seat them when re-installing the drive, AirPort antenna, and cowling. I would recommend holding off on putting the screws back for the AirPort antenna and cowling until both are in place, and re-checking the hard drive connectors before installing/tightening those screws.

UNSC Jon 117, · Reply

This board component is very delicate, I screwed up my Mac Mini IR receiver and HDD led light by doing this wrong. PLEASE take your time to do this delicately.

lcba813, · Reply

Hi, I can't remove the yellow screw, I don't even see it (it look like more like on this picture: http://static.macgeneration.com/img/2012...)

So I don't know what to do, I don't want to damage the tread (if there is actually one..) and I can't move the logic-board..

Do you hav any idea?

broussesimon, · Reply

The "yellow screw" depicted in this picture doesn't exist in the Mac Mini late 2012, at least in mine. Well, to be more precise, it exists but was already removed when the fan was unscrewed (it was actually in the fan).

Jeff Evans,

I found the same as Jeff.

Martin Cleaver, · Reply

If you're in a pinch and don't have time to order the removal tool, you can use two 2mm hex wrenches.

philomathius, · Reply

You can pull the board out about 1cm with the wires intact.

Martin Cleaver, · Reply

In April, I purchased a late 2012 mini (MD387LL/A) - 2.5Ghz i5 with 500MB hard drive.

It looks like Apple now secures the drive to the tray with 3 screws. 2 on back side and one on front. This means the entire drive tray has to come out to remove the drive - it no longer just "lifts out" as in step 18. In order to remove the drive tray, you have to remove the power supply (step 22).

Gary Leatherman, · Reply

During reassembly, watch the power harness and connector from the power supply when reinserting the logic board assembly into the case. When the board is close enough for the connector to reach, re-attach it before inserting the board the rest of the way. I found that if the connector is lined up properly, it almost attaches itself.

Also be careful of the hard drive and IR sensor connectors.

UNSC Jon 117, · Reply

Speaker trademark? Is it a sony, or a Bose...

I think it is a bad quality speaker.What do you thick?

Hugo BURGUILLOS, · Reply

During reassembly, after putting the "lower" drive back, test fit the AirPort antenna to make sure the two holes in the antenna plate line up with the two holes in the drive. If not, check that the power harness from the power supply is routed correctly. If the power harness is next to the power supply, go back and re-route it properly.

UNSC Jon 117, · Reply

Before I started this ifixit I read a lot of people talking about the antenna not going on properly and problems with the hard drive. I found that the problem is the two grommets inside the front of the casing. These grommets are where the two screws on the existing or upper most (when the case is inverted) hard drive should go into.

I was placing the hard drive flat against the second hard drive I'd added which ment the two screws weren't in the grommets and we instead pushing on the outer casing. This meant the hard drive was in the wrong position and if I had continued with the rest of the reassembly the antenna definitely couldn't have fit correctly. I spotted this and made sure the hard drive was in the grommets, leaving enough room for the power cables to sit between the two hard drives.

With the hard drive sitting correctly you should find everything goes back together very easily. If you get to the end and nothing seems to fit this is probably the reason why!

Martyn, · Reply

I bought my mini in late June 2013. My hard drive was not mounted as indicated, it was in the lower slot. I had to insert the grommets into the upper holes. You need to use a non metal flat edge to get them in, my fingers had no leverage when reaching into the aluminum shell. I also waited until I had removed everything from the case before inserting them to minimize the risk of harming an internal component.

rob545, · Reply

This is one case where having the actual reassembly instructions would be helpful. When I put my drive back in the upper position, I thought it was in the right place, even tried to move it and it seemed like it was locked into the holes, but it wasn't, so I had the issue with the antenna plate not going back on. It was so close. It seemed like it should work, but nope.

So, after disassembling again, I played with it some and the best, most surefire way to get it to line up is to hold the unibody upside down when inserting the drive. It has to be essentially at the top to catch the holes. Thin drives make it even more of a problem.

Once I did this, it fit in great and stayed in with no need to hold down, and there was now another 1/8" between the motherboard and the drive, which doesn't seem like much, but in this tight case, its everything. The antenna plate then went in perfectly, all 4 screws were in with no issues at all and the connectors for the two drives stayed on with no issue.

Sherifftruman, · Reply

Like others, I found with my November 2013 purchased Mac Mini, Apple had installed the internal hard disk in the bottom location (bottom when working on the unit upside down as detailed in this guide).

I found that it was best to remove that drive, and install the SSD in the bottom location, but use

* 2 of the rubber grommets and screws (that came with the ifixit kit) on the front edge of the drive

* that let me use 2 of the screws from the original mac mini on the back top HDD as they are larger screws than came with the kit

That way the HDD didn't rattle in the top location.

I also

* Installed the SSD in the bottom location with the original apple cable

* Installed the spinning 1TB drive into the top location (which made it easier for the top wifi screws to screw into

* But I had to reshape the cable (that came with the ifixit kit) quite a bit to get it to line up with the connector on the logic board.

brian, · Reply

During reassembly I had the reported problems of getting the original drive in the right spot. You should note that there is a gap on the left side. My drive slid in (twice) so it was right up against where the connectors are on the left side. Slide it right so there is a gap.

mikeubell, · Reply

Careful when reassembling. Don't make the same mistake I did by attempting to screw in the hard drive bracket without having the power supply re-inserted and aligned. Otherwise the screw will end up in the piece attached to the bottom of the case (where it's not supposed to be) and you will have no choice but to pry the glued part off the case to remove it. If you start to hear a "crunchy" sound when screwing, stop immediately because it's probably a glued part coming off.

anonymous 3693, · Reply

When putting it back, make sure that it's both in the correct place and fits properly; otherwise, it may come loose. After reassembly, if you hear what sounds somewhat but not quite like a loose screw rattling around in the case, it's probably this clip.

Don't worry: it's only 20 steps to get back to it. I hate this metal clip. ;-)

UNSC Jon 117, · Reply

For the late 2012 model at least, when re-assembling, make sure the edges of the plug are lined up with the innermost grooves in the case (there appears to be another set that is closer to the outside of the case).

anonymous 3693, · Reply

Specifically, note the power harness and connector, and that it's routed "above" the inner edge of the power supply ("below" when viewed from this angle). That power harness needs to be in the same position when replacing the power supply during reassembly. If the power harness ends up next to the power supply instead, the "lower" drive won't fit properly and the AirPort antenna won't line up correctly.

UNSC Jon 117, · Reply

With virtually everything removed from the outer case, this is a good time to look toward the front of the case to notice the two locations where the standoffs from the "lower" drive normally fit. You'll want to be aware of this when reinstalling that drive later.

UNSC Jon 117, · Reply

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