Use a spudger to pry under the microphone board. and gently wear away at the connecting glue.

The board is glued on so use the spudger to release the glue. It may take some time but be patient to avoid damaging the device.

The microphone component is delicate and relatively flimsy, so a gentle approach to breaking the adhesive is recommended.

After the adhesive seal has been broken, gently lift and remove the microphone board.