RE: Ground hum - table to phono

Posted by Story (A) on April 3, 2021 at 15:31:20

In Reply to: Ground hum - table to phono posted by Wtucker1 on April 3, 2021 at 08:18:21:

do you have an ohm meter? you could measure for continuity between the preamp rca ground and the tonearm itself. The tonearm should be grounded, if not you'll get a grounding of sorts when you touch it. Some table and arms have separate ground points which complicates things and it sounds like your table is not stock. Why the hum stops when you touch the slate is a bit of a mystery.

There are many places to look for a ground issue, like wrong connections on the cartridge pins, in other words L- should be with the L+ and vice versa. Depending on the cartridge the minus of either channel can be internally connected to the body of the cart. It can be a mind F so start analyzing everything starting with the cart connections and moving down the line to the preamp. Post pics as they help.

Proximity to a hum field, as said below, can effect things also. Give us more clues to help you.

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Follow Ups Full Thread

Topic - Ground hum - table to phono - Wtucker1 08:18:21 04/03/21 (6)

RE: Ground hum - table to phono - Thank you! - Wtucker1 09:09:11 04/07/21 (0)

RE: Ground hum - table to phono - samstone 07:18:04 04/04/21 (0)

RE: Ground hum - table to phono - Story 15:31:20 04/03/21 (0)

RE: Ground hum - table to phono - mcdonald43 10:53:39 04/03/21 (1)

RE: +1 unshielded - LtMandella 12:19:57 04/07/21 (0)

RE: Ground hum - table to phono - peteSF 09:21:12 04/03/21 (0)

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RE: Ground hum - table to phono - Story 15:31:20 04/03/21 (0)

RE: Ground hum - table to phono

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