I have a Eos Rebel T3i 80D, I got an external powered mic (comica V30) and when I plug it in the audio dies. The mic is definitely plugged in all the way, it has external power, I can't figure out the problem. This is the second mic I have tried both had this same issue.
When I plug the mic in the dB meter goes to zero and it stays there. Same with it set to automatic as well as manual. No sound registers. Microphone works instantly on my smart phone, can't get it to work on the Canon. There really aren't any options on the menu so it doesnt seem there is anything else I can do?