There will be one black wire, a thin white wire and a thin red wire connecting to the trigger module from the circuit board. Using your needle nose tweezers insert one of the ends into the release slot below the white wire.

Make sure to aim the tweezers toward the wire.

Lift the end of the tweezers to release the wire.

The Circuit board is now free.

Do not force the removal of the wire.

Remember to reinsert the wires to their corresponding slots when reassembling.