Remove the 4 Y00 screws on the back.

Carefully pry off the back case from the main unit

Carefully disconnect the battery connector.

For the smaller ribbon cable (Backlight ribbon), Lift the small black bar upwards lightly with your nail or a small flathead bit.

With either a small flathead or spudger, pry up the black bar on the wide ribbon cable.

Using a small flathead, Pry upwards from the top right of the speaker.

Remove the 10 screws on the motherboard.

Remove the 1 screw in the top right (this is the last screw on the system) and lift up the housing.

You should be able to lift out the buttons.

Congrats! You made it to the end! Just follow the steps in reverse to rebuild the unit.