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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


    Dynaco PAT-4 Injects Hum when High Filter is Used

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    arremondo


    Posts : 21
    Join date : 2021-03-11

    Dynaco PAT-4 Injects Hum when High Filter is Used Empty Dynaco PAT-4 Injects Hum when High Filter is Used

    Post by arremondo Tue Sep 10, 2024 10:22 am

    Hello all,

    I just finished doing an almost complete rebuild of my Dynaco PAT-4 using the PAT4 Renewal Kit from https://updatemydynaco.com/storeindex.html#PAT4RENEW

    It sounds amazing (especially the phono input) but when I click the high filter on any of the settings, it injects an irritating hum.  The hum goes away when I turn the switch to the off position.  I have cleaned it with Deoxit but the hum still exists.  Any ideas?

    Thanks in advance!

      Current date/time is Thu Nov 21, 2024 1:09 pm