MacBook Pro 15" Unibody Late 2008 and Early 2009 Logic Board Replacement

Prerequisite Only

Prerequisite Only

Please note that this guide is only a prerequisite for other guides.

Logic board assembly replacement.

Logic board assembly replacement.

Edit Step 1 Mid Wall  ¶ 

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Edit Step 1 Mid Wall  ¶ 

  • Remove the following 5 screws securing the mid wall to the upper case:

    • Three 10.5 mm Phillips screws.

    • Two 3.7 mm Phillips screws.

Edit Step 2  ¶ 

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Edit Step 2  ¶ 

  • Lift the mid wall out of the upper case.

Edit Step 3 Logic Board  ¶ 

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Edit Step 3 Logic Board  ¶ 

  • Remove the following six screws securing both the right fan and the left fan to the logic board:

    • Four 3.5 mm Phillips screws.

    • Two 3.2 mm Phillips screws.

Edit Step 4  ¶ 

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Edit Step 4  ¶ 

  • Use the tip of a spudger to lift the right fan connector straight up from its socket on the logic board.

    • Be sure to only pry up on the connector itself not on the socket or you may damage the machine.

    • It is useful to twist the spudger axially from beneath the fan cable wires to release the connector.

  • Remove the right fan from the case.

Edit Step 5  ¶ 

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Edit Step 5  ¶ 

  • Use the tip of a spudger to lift the left fan connector straight up from its socket on the logic board.

    • Be sure to only pry up on the connector itself not on the socket or you may damage the machine.

    • It is useful to twist the spudger axially from beneath the fan cable wires to release the connector.

  • Remove the left fan from the case.

Edit Step 6  ¶ 

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Edit Step 6  ¶ 

  • Remove any adhesive from the camera cable connector.

  • Disconnect the camera cable by pulling the male end out of its socket, parallel to the logic board, do not lift it upwards.

Edit Step 7  ¶ 

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Edit Step 7  ¶ 

  • Use a spudger to carefully pry the optical drive connector straight up off its socket on the logic board.

Edit Step 8  ¶ 

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Edit Step 8  ¶ 

  • If necessary, peel off the foam bumper covering the subwoofer connector.

  • Using the flat end of a spudger, pry the subwoofer connector straight up off its socket on the logic board.

  • Be very careful. This connection is delicate, the socket can be easily broken off the logic board.

Edit Step 9  ¶ 

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Edit Step 9  ¶ 

  • Use the flat end of a spudger to pry the silver-colored hard drive cable connector straight up out of its socket on the logic board.

Edit Step 10  ¶ 

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Edit Step 10  ¶ 

  • Use a spudger to pry the trackpad connector straight up out of its socket on the logic board.

Edit Step 11  ¶ 

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Edit Step 11  ¶ 

  • Using the tip of a spudger, flip up the IR/sleep LED ribbon cable retaining flap.

  • Pull the IR/sleep LED ribbon cable straight out of its socket.

Edit Step 12  ¶ 

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Edit Step 12  ¶ 

  • Use a spudger to pry the battery indicator light connector straight up out of its socket on the logic board.

  • Pry up under the cable wires to avoid pulling the socket itself off of the logic board.

Edit Step 13  ¶ 

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Edit Step 13  ¶ 

  • Using the tip of a spudger, flip up the keyboard ribbon cable retaining flap.

  • Pull the keyboard ribbon cable straight out of its socket.

  • During reassembly, make sure to fully insert the keyboard ribbon cable back into the ZIF socket.

Edit Step 14  ¶ 

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Edit Step 14  ¶ 

  • Using the tip of a spudger, flip up the express card cage ribbon cable retaining flap.

  • Pull the express card cage ribbon cable straight out of its socket.

Edit Step 15  ¶ 

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Edit Step 15  ¶ 

  • Using the flat end of a spudger, pry the microphone cable connector straight up out of its socket on the logic board.

  • Pry up under the cable wires to avoid pulling the socket itself off of the logic board.

Edit Step 16  ¶ 

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Edit Step 16  ¶ 

  • Grab the plastic pull tab secured to the display data cable lock and rotate it toward the DC-in side of the computer.

  • Pull the display data cable connector straight away from its socket.

  • When disconnecting the display data cable, do not pull on the black tab secured to the cable lock. We recommend wiggling the cable while applying tension to slowly "walk" the connector out of its socket.

  • Make sure the display data cable is placed correctly in its socket during reassembly. Failure to do so will result in a partially visible display or no display image at all.

Edit Step 17  ¶ 

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Edit Step 17  ¶ 

  • Locate the keyboard backlight ribbon cable (near the left fan space).

  • Using the tip of a spudger, flip up the keyboard backlight ribbon cable retaining flap.

  • Pull the keyboard backlight ribbon cable straight out of its socket.

Edit Step 18  ¶ 

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Edit Step 18  ¶ 

  • Remove seven 3.2 mm Phillips screws securing the logic board to the upper case.

  • Do not remove the logic board yet! There are connectors attached to the underside of the logic board that must first be disconnected.

Edit Step 19  ¶ 

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Edit Step 19  ¶ 

  • Remove two 7 mm Phillips screws securing the DC-in board to the upper case.

  • Note: This step is not completely necessary, but it will make it easier to disconnect the cable that is connected to the DC-in board.

Edit Step 20  ¶ 

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Edit Step 20  ¶ 

  • Remove two 3.5 mm Phillips screws securing the bottom case clip to the upper case.

  • Lift the bottom case clip out of the upper case.

  • Some MacBook Pro Unibodies do not have a bottom case clip and do not require this step.

Edit Step 21  ¶ 

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Edit Step 21  ¶ 

  • Carefully lift the logic board assembly from the left side and work it out of the upper case, minding the port side that may get caught during removal.

  • Do not entirely remove the logic board yet!

  • Ensure that the logic board is free from all connections to the upper case (except the battery connector) before proceeding.

  • During reassembly, ensure all connectors and cables are not placed underneath the logic board. Some of the ribbon cables are very thin and fragile.

Edit Step 22  ¶ 

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Edit Step 22  ¶ 

  • Lift the logic board enough to grab the battery connector and pull it straight away from its socket on the logic board.

  • Lift the logic board assembly out of the upper case.

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

For more information, check out the MacBook Pro 15" Unibody Late 2008 and Early 2009 device page.

Required Tools

Spudger

$2.95 · 50+ In stock

Phillips #00 Screwdriver

$5.95 · 50+ In stock

Recommended Tools

54 Bit Driver Kit

$29.95 · 50+ In stock

Pro Magnetic Project Mat

$19.95 · 50+ In stock

Pro Tech Screwdriver Set

$59.95 · 50+ In stock

Anti-Static Project Tray

$4.95 · 50+ In stock

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Comments Comments are onturn off

Pry under the side where the wires connect.

colleenthompson, · Reply

There's a little shiny piece of plastic holding this item in place to keep it from sliding out of it's slot. It's glued on and if you don't take it off first, you'll likely bend the connector so that it won't work anymore. Ruined a motherboard because this step was missing.

maccentric, · Reply

What this guy said - REMOVE the shiny plastic block first. Also the "straight away" means sliding outwards TOWARDS THE OPTICAL BAY - *NOT* upwards.

Damien, · Reply

Hi, thanks for this tutorial: it solved my problem.

But unfortunately I have broken the IR/sleep LED ribbon cable socket on motherboard (cable is ok, socket crumbled): computer works fine but now it doesn't go on standby anymore. Is there a way to fix the cable on motherboard (for example with Kapton tape) or is there a software to manage computer standby?

Thanks in advance for your help.

Mary

mary, · Reply

I ran into trouble when re-installing the keyboard cable. I got everything put back together, plugged it in, and pressed Power... and nothing happened. I took everything apart again, reseated the heat sink and everything, put it back together... and the Power button didn't respond.

The MagSafe light came on, and the battery charge lights came on. But it wouldn't power up.

Finally I figured out that the keyboard cable is really tricky to get in correctly. If you can slide it out with the retaining clip locked (applying very little pressure), then the cable isn't actually in correctly. I had to really fiddle with it, and maybe slide it in one side first, to see that it actually needed to slide in another 1/8th inch or so beyond what felt like "in" the first few times I did it.

Once I'd secured that cable, my MacBook turned on again without a problem. So far, after just replacing the Thermal Paste (I didn't actually install a new heat sink), the computer is running 20°F cooler than it has in years. Thanks!

simolinic, · Reply

I agree. The instructions should place emphasis on seeing how deep this ribbon is. Most ribbons are pretty easy to slot back in. This one is not (maybe because of the colour). The IR/sleep is a b... too!

Jerome, · Reply

Hi Jerome. Thank you for your feedback. I agree with you and simolinic. There should be a reminder bullet that warns people about the depth of the ribbon cable. Thanks for adding that. Much appreciated.

Walter Galan,

On reassembly, check carefully that none of the fiddly little cables are trapped under the logic board. I had to back up and liberate the subwoofer connector. It takes some careful jiggling to get the sockets seated in the port holes.

colleenthompson, · Reply

The two screws closest to the optical drive have smaller heads. (May not be critical.)

Marty Swartz, · Reply

My clip is oriented 180 degrees (flipped) from this picture.

colleenthompson, · Reply

The bottom case clip is screwed to a black plastic bracket that's glued onto the upper case. My replacement upper case did not come with this bracket. I had to carefully pry it off the old upper case, taking care not to break it, and glue it to the new upper case before replacing the logic board.

colleenthompson, · Reply

I have a 2.66ghz 15inch Unibody Macbook Pro (A1286) and this step was not necessary.

Andrew Mostajo, · Reply

Quote from Andrew Mostajo:

I have a 2.66ghz 15inch Unibody Macbook Pro (A1286) and this step (24) was not necessary.

Andrew Mostajo, · Reply

Apropos to the last tip in this step, the replacement unibody I purchased omitted the receiving end of this clip, but it was in my original. As it only captures (but does not secure) a small metal tab on the bottom cover, I skipped transferring it.

Brett Deriso, · Reply

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