Turntable hum problem after demagnetizing

Do you have another cartridge you can swap in place of your Benz LP-S to see if the hum goes away? If not, you could buy an inexpensive one and try it. Obviously if the hum goes away the Benz cartridge is damaged, if the hum is still there the problem is somewhere else. Make sure your table and arm are properly grounded.

Was aways for a few days, so just got around to disconnecting the cartridge. Hum still there, but slightly less - only slightly more now when touching tonearm, but very loud if I touch the hookup leads (red, yello, blue, green). I will try rehooking the leads tomorrow - as Paul2240 suggests - I have otherwise disconnected and reconnected the phono cable from both ends. The ground wire on the phono cable looks to be undamaged and all other visible wiring looks undamaged. I don't think the AC is the problem - there are 4 other components hooked up to the circuit - no issues.

Try this - get a piece of wire, strip both ends and connect one end to the grounding post on your phono stage. Then try touching the other end to tonearm, turntable subchassis, turntable spindle and turntable motor. As you go through these check for hum. I have on the odd occasion managed to eliminate hum from earthing various turnable components.

Call Garth Leerer at Musical Surroundings. I have a Benz LP-S and asked him if it was ok to use my Fluxbuster. He said that the Benz Aesthetics is far better. Your Benz doesnn't need to be done that often because it has a non magnetic Ruby polepiece. If the Aesthetics screwed up the cartridge, Garth would most likely repair or replace it.

So, I took my whole rig into the local high end audio store and the tech checked it over with an ohm meter. He did finally isolate it to the cartridge. Ouch.....
Also a careless error of mine - the hum is actually only in the right channel, in my panic, I thought it was both. I've contacted Garth from Musical Surroundings, and I'll see what he says.