Hi Folks:
I tried to fix this mic, but first I had to figure how to take it
apart. I couldn't find any hits with google, so here's we go!

There are three plastic latches inside.
One is at the top, and two on either side, about an inch and a quarter
from the opening of the mike plug. You may be able to poke a flat-blade
screwdriver here, but it's a very tight case. I look now how I
chipped-up the edges and think squeezing the back-half of the case on
both sides, about an inch and a quarter up from the cable may snap it
open. This mic has a bad switch. Easy to fix, but maybe hard to find
the parts. Maybe at Digikey.

I hope someone finds this useful!
Harry