Re-opening the thread from here, because support closed it when I mentioned that the buzzing had (for the moment) stopped.
Well, it’s back! And worse! In fact, it seems to come and go, so it’s clearly some loose piece of material in the GF case.
I’ve got something going on, too. I see the left-side gantry belt vibrating when it happens. Something is trying to move but not able to move.
This sounds like a different issue. In my case, it is just a resonant vibration caused by the exhaust fan. Two parts of the case appear to be vibrating against each other.
I’m so sorry! Unfortunately we’ll need to replace your unit.
I see you already emailed us about this and we’re working on it there, so I’m going to close this topic. Thank you for letting us know about this.