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You are here: Home / Topics / Grounding problem in a slimmed down recordplayer.

Grounding problem in a slimmed down recordplayer.

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Projects › Projects › Grounding problem in a slimmed down recordplayer.

  • This topic has 0 replies, 1 voice, and was last updated 4 years, 1 month ago by israr786.
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  • July 14, 2018 at 1:56 pm #4948
    israr786
    Participant

    Hi! I don't know it this is a good place to ask this, but I thought I give it a shot!

    So I'm rebuilding an old recordplayer, sort of sliming it down and removing the "big box" and putting away the electronics inside so I can have only the record and the arm visible by itself. I have gotten everyting to work, but the grounding is all wrong so I got quite a bit of humming. If I touch the big metal disk the record is laying on (at least 1 kg of metal), I get a lot less hum, but still some.

    Before it was not grounded thought the outlet, but it was grounded via the amp, which I don't have anymore. It also had a pretty big and heavy metalplate in the bottom, don't know if that could have helped in anymay, but I thought i mention it since I removed it. Now it's hooked to an active speaker via a new RIAA amp I bought for this and the ground cable is connected to the RIAA amp. The RIAA amp has a specific grounding hook, but it's not grounded thought the outlet either.

    So, this is not black magic to me, but almost, so I don't really know how to approch this problem. Can anybody help me out? Thanks in advance!

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