iFixit

Remove the AirPort/Bluetooth board from the logic board.

Use the flat end of a spudger to pry the AirPort/Bluetooth ribbon cable up off the logic board.

Remove the AirPort/Bluetooth ribbon cable.

Release the tabs on each side of the RAM chip by simultaneously pushing each tab away from the chip.

These tabs lock the chip in place and releasing them will cause the chip to "pop" up.

After the RAM chip has popped up, pull it straight out of its socket.

Repeat this process if a second RAM chip is installed.

Remove the single 5 mm T6 Torx standoff from the heat sink near the edge of the logic board.

Remove the following screws securing the heat sink to the logic board:

• Four 8.6 mm T8 Torx screws
• One 2.6 mm T6 Torx screw

Keep track of the springs held beneath each of the T8 heat sink screws.

Remove the heat sink from the logic board, minding any cables that may get caught.

If the heat sink appears to be stuck to the logic board after removing all screws, it may be helpful to use a spudger to separate the two components.

If you need to mount the heat sink back onto the logic board, we have a thermal paste guide that makes replacing the thermal compound easy.

Logic board remains.