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motot boating when phono selected on preamp

This maybe a bit long.

I had to send in my cartridge for cleaning to Soundsmith. When I got it back i mounted it right away and had no sound issues. Later I noticed that the small blue wire going from the tonearm to the cartridge had broken and was no longer connected.

I took it to a local TT technician. He put a small connector on the cartridge pin and preceded to solder the blue wire to the connector while the connector was still on the cartridge. It was not easy to solder but after about 20 minutes he finally got it done.

When I hooked it back up at home the output had a loud oscillation (motor boating). The oscillation is sensitive to volume control. I tried my cd player and it played fine. I changed the output to a different phono out and it still occurred.

Could the tech have harmed the cartridge by soldering the clip to the wire while the clip was still attached to cartridge pin. The tech let me watch and he barely touched the solder to the clip/combination so I do not think it could have damaged anything, but who knows.

I have another preamp I am going to hook up and see if it is my Truth preamp. Any thoughts would be appreciated.

Thanks

Richard


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Topic - motot boating when phono selected on preamp - rockpassion 21:52:54 01/18/24 (5)

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