My Luxman turntables have a little delicate ending to the ground wire. Consider double checking whether this wire end is actually making proper contact with the grounding post on your preamp.
Is analog supposed to be so noisy?
I am experimenting with a Luxman TT which is actually in pretty good shape. My system consists of the Prima Luna Prologue pre-amp and the Prologue 6 monoblocks. A phono input was installed in the preamp when I bought the units. As soon as I turn the knob to the phono input, I am bombarded with a fairly significant hum, which is not present when I use the settings for my CD players. Is this something normal, or am I doing something wrong? By the way, I have also tried my old Moscode Minuet in A, which includes a grounding plug for the turntable, and I am still getting the same problem.