Interesting information here. I’ve had similar issues. I “upgraded” from the PSvane to the Genalex (Upscale, Kemin’s stash). I only had the issue with 1 of the Genalex tubes. I just got a replacement last week and I have a slight buzz when turned on, it quickly goes away. From my experience, I was able to solve the issue by finding the right tubes. Having done all of this, My biggest learning is probably that I should have left the Psvane in place.