u/Relative_Move2001

Hey guys, new lumix user here, so I recently got my used lumix s9 (labeled like new) on MPB with the lumix s 50mm f1.8. So everything works perfectly fine except for the fact that im not getting any audio from my mics, ive tried putting external mics but still the camera is not picking any sound. It's hard for me to return the camera to MPB (since I ordered it using a friend in the UK, who brought it to me in zimbabwe when he visited 2 weeks back. So how best can I resolve/ fix the camera maybe