Canon 6D Mrk II Background noise all of suden

[synergy21]

Hi Community!

I have been using a Canon 6D Mrk II for a year, and since yesterday, when I record I can hear a background noise, especially when i turn up the volume.

I use a external Mic Rhode, I put the setting in manual in the third lowest bar, and never had this issue before.

Yesterday i was recording and I had a very weird message on the screen, a issue with the SD. From that moment, without touching any other parameters, I have this noise.

I put the video here

https://youtu.be/B6M4c_qaFtQ

Anyone can help?

Ty!

[Waddizzle]

I think I heard something like aperture noise.  What lens was used to capture the sample?  Have you recently changed lenses?

[EDIT]. You mentioned an SD card error.  What type of SD card?  You need to use full-size, UHS-I SD cards.  Be sure to format them in the camera prior to first use.