iFixit

With all of the sides free, lift the upper display front panel off the display bezel.

Remove the six 3.6 mm Phillips screws securing the rear display bezel to the front display bezel.

Flip the device over so that the rear display bezel is on top and the hinge is on the side opposite from you.

Lift the edge of the rear display bezel closest to you and rotate it towards the hinge.

Continue to lift the rear display bezel off the rest of the device until it is free.

There are clips toward the bottom of the rear display bezel holding it in place. Use enough force to disengage the clips, but be careful not to break them.

Remove the 3D adjustment switch from the front display bezel.

This step is not necessary for disassembly, but the switch is likely to fall out on its own. By removing it yourself, you reduce the chance of losing it.

Insert a metal probe into the space above the ABXY buttons with the point touching the metal hinge.

Push the hinge towards the center of the upper case. This will require a fair amount of force.

Before and after images of the hinge location when looking at the back of the upper display are shown.

Slowly pull the upper display assembly away from the upper case.

Make sure that the various ribbon cables are being fed through the slit in the upper case.

Separate the upper display assembly from the upper case.

Carefully feed the speaker assembly ribbon cable through the hole in the upper display bezel.

You may have to gently fold the edges of the connector end of the ribbon cable to allow it to fit.

Remove the 2.5 mm Phillips screw securing the right speaker board to the upper display bezel.