That’s great turn time for a repair! A little bothersome that it seemed like pulling teeth to get the full detail on what was addressed, but that seems to have become common with many CS departments lately that have otherwise very good service. I’ve experienced the same with Bose aviation headsets, David Clark headsets, Lightspeed headsets, Autel Robotics drones, and Garrett (pinpointer service) over the last year, so Minelab is in pretty good company there. Seems you always have to ask very specific questions to find out what was done during service/warranty repair with all of these places now, otherwise they all are perfectly happy just to fix the item and return it with no real explanation - I guess they figure people don’t really care anymore, as long as it works and they don’t get changed*.
*oops - charged, not changed. I hate when I post from my iPad...thinks it’s smarter than me!