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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


    ST-70 Restoration, Can-capacitor

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    ksbaek


    Posts : 2
    Join date : 2021-02-07

    ST-70 Restoration, Can-capacitor Empty ST-70 Restoration, Can-capacitor

    Post by ksbaek Mon Feb 22, 2021 5:27 am

    Hi, I did some work to restore existing ST-70.
    It was done without can-capacitor.
    For the heater of 7199 is connected directly from the tube #3, #7 of V3 & V7
    (That means, eyelets 3, 8, 10, 18 are opened)

    ST-70 Restoration, Can-capacitor Dynaco11

    One thing I wonder is the direction of can capacitor.
    Existing can shows no mark terminal(1) towards rear side of ST70(power inlet side)
    When I install 80uF of new 80/40/30/20 toward rear side, D mark toward rear side. Am I correct?

    I prepared a pdf, not possible to post.
    avatar
    ksbaek


    Posts : 2
    Join date : 2021-02-07

    ST-70 Restoration, Can-capacitor Empty Re: ST-70 Restoration, Can-capacitor

    Post by ksbaek Mon Feb 22, 2021 7:44 am

    Here, I upload what I wonder.
    ST-70 Restoration, Can-capacitor Can_ca10

      Current date/time is Sun May 19, 2024 5:47 pm