When removing the casing, do not drop the small black plastic piece. This piece sits in a small gap above the lens, to the left of the flash, and underneath the camera case.
Remove the small black plastic piece and set it aside. If necessary, use tweezers to remove the small black plastic piece.
Do not completely lift the circuit board off the camera. The circuit board is attached to the top of the camera by a soldered ribbon cable. Lifting the main circuit board off the camera will break these soldering points.
Gently lift the bottom of the main circuit board, the side without the soldered attachment points, like a hinge.
Locate the white ribbon cable attached to the underside of the main circuit board.
Gently remove the white ribbon cable from the connector.
Adhesive tape attaches the flex circuit to the top of the camera. Gently un-stick the flex circuit from the tape, but do not completely remove the flex circuit.
The next step requires the use of a soldering iron. Do not perform this step if you do not have experience soldering, you could permanently damage the mother board
De-solder the two soldered ribbon cables attached to the motherboard.