Oracle Delphi MKII-popping

[Patrick V]

I’m running an Oracle Delphi MKII, Sumiko Jelco tone arm with a Grado Silver cartridge. I’m routing through an Oracle PH200 preamp, into my system.
I’m getting a phantom “Pop”, randomly but consistently, every minute or two.
I thought it was the table, because it sounded like a record pop, (but louder”, but I’ve since lifted the needle while the record was still spinning, and it still occasionally happens, seemingly when I touch or jotherwise jostle the table, though that could be coincidence.
The only thing I’ve done differently since the popping issue presented itself was add the Oracle preamp.
Any thoughts on what the culprit might be?
Or troubleshooting ideas?

 

[ripblade]

Is the chassis grounded? There's a grounding nut on the underside to the left of the arm board. This needs to be connected to ground in addition to the arm itself.

 

[Patrick V]

Ah, so it’s a secondary grounding nut?

 

[ripblade]

Is there another one for the chassis?

 

[Patrick V]

Ah, yes, there is!
Thank you, I did not know that, I will run a wire to it tomorrow.
I love this site, I’m somewhat new to this level of equipment, and I VERY much appreciate your experience and knowledge