Problem with external sound recording XT-3

[aecreates]

Hello, I am the owner of 2 x xt-3 cameras, I encountered a problem:
When I record sound to an external device (rode video mic pro plus and saramonic blink500), interference appears, but what is interesting only after pressing the rec button, in standby mode, everything is fine - clear sound, I checked on both cameras with all shooting modes, changing microphones in turn. The camera writes its sound without any interference, I also tried to connect my microphones to other cameras (canon and Sony), there is no such problem, Tell me what to do?
Thank you

[snaik]

Hi, I was the same problem during many month. An electonic sound at every second and appears when i put the button on rec. I have try to find during long time, change different mic (zoom H6 etc) was same... Its was not a mic problem. I made a test with an another XT3, was same...

So i have try to reduce the audio gain to -20 in my XT3, and increase the gain to +20 on the external mic and the sound has disappeared. 

It's very weird, but it worked. Why ? I dont know, i have send the question to fujifilm, I'm waiting for their answer

Edited October 8, 2021 by snaik

[justtocomment]

I made an account to thank user “snaik” for their recommendation to lower the in-camera audio gain to -20 and raise the mic audio gain settings to +20 because it worked! I’ve been trying to look for a fix for this problem for like a week and I finally found it! Thanks a lot