X-T2/3 Microphone Pre-AMP is BUZZING and Hissing [deep-dive video]

[Ned_Sayer]

Hello, I had the X-T2 and it made a humming sound, so I replaced the camera with an X-T3 the problem persisted, I thought it might be the Microphone but I still got a super High Noise and Humm in my audio no matter what settings I used... So I decided to make this video to really get down and see what the problem could be.

Currently I tied a wire to the strap holder and the other end to my foot, that way the camera is grounded and the Humm is bypassed for the most part. 

any help would be hugely appreciated... is this problem fixed in the X-T4?

 

Additional Notes, Charging from USB-C from the mains causes interference... charging from USB-C over Battery Pack is fine, no interference. 

Edited January 15, 2021 by Ned_Sayer
Added detailed info

[Ned_Sayer]

Update1:
I've tried using a "Ground Loop Isolator" but that did not clear up the problem... like at all.
I made a video in italian (I live in italy) but the gist is pretty obvious:

Looking for recommendations...
I've been told also that an EMI shield for a power socket as a Power Conditioner was advised to clean up the dirty sound

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[Ned_Sayer]

SOLVED...

It was not the Fuji Camera, it really was cables and the Microphone...

I fell like I had a monologue. 

 

ended up wrapping a cable a few times around the capsule of the mic to create a coil-like Electromagnetic barrier and then wrapping the same wire around the Sleeve aka Ground of the 3.5mm jack creating my own EMI blocker / Ground Loop isolator.

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