Today, i have changed both my microphone (broken) and my USB-board in same time.
Problem was because separate parts was not assembled (i thought yes !) and without any soldering on the two new parts that i received ...
Areas connexions (4) are very small and it's really difficult to put little soldering point on USB-board and when done, put the 4 mic connectors on it, and after, to solder through over top with a small soldering iron.
It's easier if you use the old USB-board because if you unsolder the old mic quickly you can keep enough soldering on it and you can solder the new mic by direct appply and solder it through by the top.
Don't forget to put again silicon for fixation and waterproof.
Hope i'm enough comprehensible ... i'm not english !
PS : don't drink too much coffee before !