Turntable and phono preamp white noise
The other day I dusted off and setup my JVC L-A31 turntable that I purchased in approximately 1981, plugged it into my Creek phono preamp OB H-18 MM that I purchased in the mid to late 90s, and plugged it all into a JoLida JX10 integrated tube amplifier [on loan to me].
Once a record was loaded, the turntable was spinning with the needle hovering above the record [i.e. not playing], the phono preamp turned on, and the JX10 turned on I could hear a constant, although somewhat discrete, "white noise" out of my speakers. When I selected another source, the noise disappeared. When I switched it back to the turntable it returned. I plugged my turntable into a different input on the back of the amp and the noise followed it. Any ideas on what could be causing this?