Every now and then I get a humming noise from my TT source. When I touch the headshell or wires attached to the cart, the noise changes. When I touch the preamp the noise changes. When I touch the contacts of the interconnects the noise changes. And then it eventually goes away when I've moved enough things around.
Grounding? As I have a Rega TT, there is no ground. There IS one on my phono pre, and on my amp. Would grounding the pre potentially help?