Noise out of speaker from turntable


looking for some leads on potential issue from my turntable

have had this issue for years, in two different homes, have tried cheating the ground pin, different grounding, latest PS Audio HumBuster.

it does seem to be a ground hum, but a low level slightly fluctuating sound, which when platter is spinning, and no music, can be heard. Most of the time, when record is playing, aside from very high volume, the music drowns out the noise.

Years ago, maybe 15 years ago, when I owned a JA Michell Gyrodec, and had a similar noise, he knew exactly what it was, and replaced I capacitor in the motor i believe?

My current table has a separate power supply,it is a Symphonic Line RG-6, the rest is a Graham 2.2 arm, with a VDH Black Beauty Special X, LOMC.

i am now far away from a tech, so would like to diagnose anything here first and hope anyone can offer some advice.

TIA
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