Open up the remote control.

Remove the screw as indicated.

If someone spilled soda or apple juice over the controller it may be helpful to clean the board using contact cleaner.

Remove screws where indicated.

Gripper components can be removed for further disassembly.

Use the knife to peel off stickers that conceal the screw holes.

More screws can be removed to check the condition of gear teeth.

Admire the mechanical design.