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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


    New Power Cord ST70 Polarity??

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    LBK

    Posts : 3
    Join date : 2020-09-06

    New Power Cord ST70 Polarity?? Empty New Power Cord ST70 Polarity??

    Post by LBK on Sat Oct 31, 2020 4:05 pm

    Putting a new cord on ST70. Should the hot lead go to the on/off switch or the fuse side?

    I'm thinking on/off....

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    Hops

    Posts : 55
    Join date : 2019-09-21
    Location : South Detroit, Michigan

    New Power Cord ST70 Polarity?? Empty Re: New Power Cord ST70 Polarity??

    Post by Hops on Sat Oct 31, 2020 6:54 pm

    The Power to Ground just makes a loop through the Input Transformer, the fuse, and the powerswitch. For me, if there was a short, I would want the fuse to cut the power, not cut the common.

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    corndog71
    corndog71

    Posts : 760
    Join date : 2013-03-19
    Location : It can get windy here

    New Power Cord ST70 Polarity?? Empty Re: New Power Cord ST70 Polarity??

    Post by corndog71 on Sat Oct 31, 2020 7:35 pm

    Power should go to the fuse and then the switch.

    mijohn and LBK like this post


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    New Power Cord ST70 Polarity?? Empty Re: New Power Cord ST70 Polarity??

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