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Ground Control to Major Tom...

Looking for some help with a grounding issue. Although I have a dedicated grounding wire connected from by turntable to my phono pre, I'm getting some pretty significant hum when I make contact with my tonearm...( as I pick up the arm at the end of a LP side...)

What would be the typical culprits and where do I start assessing?

Thanks!

                                 (VPI Prime/Manley Chinook, Supra Silver Sonic BL-1 cable)

larseand
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cleeds
6,011 posts
 

If all this gear is new, why not save yourself some aggravation and have your dealer troubleshoot the equipment?

atmasphere's avatar
atmasphere
11,938 posts
 

Something very odd to add, the coaxial cable from my CD transport to my integrated amplifier (input 1) produces noise through the stage.

@larseand Which 'stage'? the phono section??

mijostyn's avatar
mijostyn
8,570 posts
 

I would try locating locating the system somewhere else in the house to see if this changes. My guess is you are acting like an antenna when you pick up the arm. The question is antenna for what?

duckmanst3
52 posts
 

I have a large plasma TV on the wall behind my rack. If I leave the TV is on and I touch the tonearm it hums terribly. It makes me wonder what all the EM is doing to my body. :)

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