Looking for Technical help with Scan Tech (Spectral) Cartridge

I am hoping someone can help with an unusual problem that I am having with a Spectral LOMC Cartridge.

Last night as I was putting an album on and I was attaching the metal clamp to the center spindle a loud buzzing came from the left channel. It was the same kind of buzzing you get when the ground lead is not attached. The buzzing started the moment the metal clamp touched the center spindle. The right channel is ok and has no buzzing.

To make sure it wasn't the amplifier or SUT I used my other TT with no problems.

To make sure it wasn't the table i disconnected the headshell wires and attached them to another cart and had no problems.

My conclusion last night was I had fried my beloved Spectral cart with a blast of static electricity.

This morning I switched everything back on and there was no buzzing. I then played a quick track with no problem.

After returning the arm to the tonearm rest the buzzing came back but when I placed the arm back on the record it went away and played fine. When I then returned the tonearm back to the rest there was no buzzing.

I now have this intermittent buzzing that doesn't occur when playing but may or may not occur if I slightly touch the cantilever but doesn't occur when it is playing.

I should add that there is no sound degradation when playing.

All of this is very puzzling and it would great to know what I have done.

Any advice will be most welcome.

Thanks

Regards

Adrian