To replace the Microphone board on a 203G unit you will need a standard Phillips head screwdriver.

Start by removing all of the cover screws, 2 on each side and 4 on the back. Lift the cover from the rear and slide it off at an angle.

You will now be able to see the microphone board on the left side (if the front of the unit is facing you). Remove two more Phillips head screws securing the microphone board.The board can now be slowly wiggled loose. Gently flip the board right-side up and carefully grab the base of the clip of the wires that are connected to the board. Gently wiggle and pull the clip loose from the board. Switch in the new board and reconnect the wires. Be careful to not over-tighten the screws for the new Microphone board when installing. Tags: 203G