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Inleiding

Use this guide to replace a damaged heat sink or to reapply thermal paste.

    • Shut down and close your computer. Lay it on a soft surface top-side down.

    • Remove the following ten screws:

    • Two 8 mm 5-point Pentalobe screws

    • Eight 2.5 mm 5-point Pentalobe screws

    • The special screwdriver needed to remove the 5-point Pentalobe screws can be found here.

  1. Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air.
    • Wedge your fingers between the display and the lower case and pull upward to pop the lower case off the Air.

  2. In this step you will disconnect the battery to help avoid shorting out any components during service. Use the flat end of a spudger to pry both short sides of the battery connector upward to disconnect it from its socket on the logic board.
    • In this step you will disconnect the battery to help avoid shorting out any components during service.

    • Use the flat end of a spudger to pry both short sides of the battery connector upward to disconnect it from its socket on the logic board.

    • Bend the battery cable slightly away from the logic board so the connector will not accidentally contact its socket.

  3. Remove the single 2.9 mm T5 Torx screw securing the SSD to the logic board.
    • Remove the single 2.9 mm T5 Torx screw securing the SSD to the logic board.

  4. Use a spudger to help lift the free end of the SSD just enough to grab it with your other hand. Do not lift the end of the SSD excessively.
    • Use a spudger to help lift the free end of the SSD just enough to grab it with your other hand.

    • Do not lift the end of the SSD excessively.

    • Pull the drive straight out of its socket and remove it from the logic board.

    • When reinstalling the SSD, be sure it is properly seated before reinstalling its retaining screw.

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  6. Use the flat end of a spudger to pry the I/O board cable up from its socket on the I/O board.
    • Use the flat end of a spudger to pry the I/O board cable up from its socket on the I/O board.

  7. Peel the I/O board cable up from the adhesive securing it to the fan.
    • Peel the I/O board cable up from the adhesive securing it to the fan.

  8. Use the flat end of a spudger to lift the I/O board connector up and out of its socket on the logic board Be sure to lift straight up on the connector as you disconnect it from its socket. The socket is very deep on the logic board and prying it from side to side may damage the logic board
    • Use the flat end of a spudger to lift the I/O board connector up and out of its socket on the logic board

    • Be sure to lift straight up on the connector as you disconnect it from its socket. The socket is very deep on the logic board and prying it from side to side may damage the logic board

    • Remove the I/O board cable.

  9. Use the tip of a spudger to carefully flip up the retaining flap on the fan cable ZIF socket.
    • Use the tip of a spudger to carefully flip up the retaining flap on the fan cable ZIF socket.

    • Be sure you are prying up on the hinged retaining flap, not the socket itself.

  10. Remove the following three screws securing the fan to the upper case:
    • Remove the following three screws securing the fan to the upper case:

    • Two 5.2 mm T5 Torx screws

    • One 3.6 mm T5 Torx screw

  11. Lift the fan out of the upper case and carefully pull the fan ribbon cable out of its socket as you remove it from the Air.
    • Lift the fan out of the upper case and carefully pull the fan ribbon cable out of its socket as you remove it from the Air.

  12. Remove the four 2.5 mm T5 Torx screws securing the heat sink to the logic board.
    • Remove the four 2.5 mm T5 Torx screws securing the heat sink to the logic board.

    • If the heat sink seems to be stuck to the logic board after removing all four screws, use a spudger to carefully separate the heat sink from the faces of the CPU and GPU.

    • Remove the heat sink from the logic board.

    • When reinstalling the heat sink, be sure to apply a new layer of thermal paste. If you have never applied thermal paste before, we have a guide that makes it easy.

Conclusie

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

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I did this last night to my macbook air 11" mid 2012. I had been running at 100 to 105°C, and had up to 10 minute delays coming back from a sleep, while the CPU hit 100% with high temps. When I got into the macbook, it was pretty easy... though the parts are small. Getting to the heatsink was easier than I have found on most desktop ATX case machines. The thermal paste on the CPU was dried and cake-like. I gently removed the paste with the spudger, and it came off easily. I cleaned it up with Arctic paste remover and cleaner, and then reassembled with arctic silver 5. I used the long, rice grain - like bead of grease approach, rather than the recommended smearing technique. Right now, I have a number apps open, and am running at 60°C (vs. the mid 90°C range), and it comes back from sleep immediatly. I don't see the dreaded kernal_task, and i have loaded up the machine and it only hits about 85°. I think in general, I am running about 30°C cooler, and the machine is performing like new again.

Keith Elliston - Antwoord

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