High frequrency noise during recording videos

I have the mini 0805 for 4 years now.
During recording videos there is a high frequency loud noise. It happens on latest and previous firmwares. Any ideas.

Sample videos:

https://vimeo.com/user132441036/review/506498318/b32626db54
or
https://www.dropbox.com/s/awu05v9jm4vh7dj/AMBA0020.MOV?dl=0

Any ideas how to fix it...

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