Use a hammer and a small chisel to carefully force the input panel open

Clamping the device helps prop the input panel open but, do not pull the panel away from the device forcefully, as there are small wires connected to the device components.

Use dyke and pliers to cut outside casing to pry open the shell and remove the circuitry.

Recommend using hand saw to cut around the plastic.

Isolate the internal electrical components from the casing

Recommend unsoldering the wires from the input panel.

Unsolder components that connect to the bottom and top circuit boards.

Detach the top and bottom circuit boards from the plastic separator.

Observe that once the circuit boards are separated individual components can be accessed.