I recently acquired a Pyle PDWM4400 Rack mount 4 headset wireless microphone system. Some of the transmitters had broken jacks. If you forget to unscrew the connector and try to disconnect the microphone you will break the jack. Replacement jacks are available on eBay and the repair is quite easy to do.
This is the ad on eBay.
These pictures show the new jacks installed. Notice that the one connection needs some more solder.
Make sure that you get jacks with threads on them for the microphone connector.
To dissemble remove the belt clip and then remove 2 screws.