Ok. Put a voltmeter in line with the ground lead that goes to the amplifier. Found a 3 to 3.6vAC voltage present.
Pulled the power supply fuse inside the turn table; no change.
Hum is still there…I get the feeling somethings’ shorted. But I also read in the repair manual about an “insulation test” that’s supposed to occur after every disassembly. So far, I’m still hunting what that might be.
Also interesting to see the conductors coming down the tone arm are un-insulated between each other and in full contact…