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Debuzzing a Wheaton TriPlanar problem

My original dealer is out of business now, and the only TriPlanar contact listed on Google does not respond. My problem: when initially turning up the preamp gain, the tonearm - yes ! - emits a loud buzz. All I have to do is grasp the shaft - wrapped in an inert cover - and the buzz ceases (mostly) for the duration of my listening session. I've grounded both the tonearm and VPI table in addition to the ground provided on the cable itself, and still the problem persists.
Might the Cardas arm cable not be shielded properly ? I have not a clue about rewiring a tonearm myself and cannot locate anyone in NYC to do it.
dr_john

Showing 2 responses by atmasphere

atmasphere's avatar
atmasphere
11,633 posts
 
Why not give Tri of Triplanar a call 612-623-0922? I'm sure he can help you out. I have heard that he's not so good at the email (by his own admission).
atmasphere's avatar
atmasphere
11,633 posts
 
Dr_John, I think I did not read your first post all that clearly. Now the problem sounds to me like it might be a sort of RF oscillation in the preamp. I would not characterize this as 'feedback'... it sounds like either a very bad ground or RF in the system. The fact that you can touch the arm tube and have the sound go away for extended times suggests that its an RF problem. I don't think its anything with the Cardas cable, as when you touch the arm tube, you should at that time be able to keep the arm still.
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