I ordered a replacement mic boom and a chat puck from Turtle Beach. The one they show on their website is WAY different than the cable included with my headset. I have a feeling it’s a problem with the headset itself, not the chat system, because other headsets I own work just fine for chat. And the issue isn’t that chat drops in and out, the mic doesn’t pick up any sound AT ALL.
But, hey, that’s what buying refurb stuff is all about, right? Cheapo prices for second hand equipment. I’m hoping the chat puck is the only thing that was missing.