I had a bunch of noise issues a while back.
Is it like a kind of whining sound?
I moved my Arbhar from my big case with all my modules and put it in a smaller case by itself and I think the noise stopped.
However, I’m still concerned and I’d love to hear a recording of your noise to see if it’s similar.
If you have an easy way to move it into another case and test if the noise stops, it could be another module that’s interfering somehow.
Let me know how you get on.