The Dynaco Tube Audio Forum

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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


2 posters

    Is failure imminent?

    frank
    frank
    frank


    Posts : 97
    Join date : 2011-02-14
    Location : Pacific Northwest
    • Post n°1

    Is failure imminent? Empty Is failure imminent?

    Post by frank Fri Mar 28, 2014 4:19 pm

    I was listening two days ago. All of a sudden there was snap, crackle, and pop in one channel. It continued regardless of volume. I turned the amp off, waited a few minutes, then turned it back on. After two full days of constant use, there has not been a repeat of the noise.

    Capacitor going bad somewhere?
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    Bob Latino
    Bob Latino
    Bob Latino
    Admin


    Posts : 3276
    Join date : 2008-11-26
    Location : Massachusetts
    • Post n°2

    Is failure imminent? Empty Re: Is failure imminent?

    Post by Bob Latino Fri Mar 28, 2014 4:35 pm

    What you describe is more likely to be a tube issue .. an output tube on that channel or one of the driver tubes that feed that channel ..

    Bob
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    frank
    frank
    frank


    Posts : 97
    Join date : 2011-02-14
    Location : Pacific Northwest
    • Post n°3

    Is failure imminent? Empty Re: Is failure imminent?

    Post by frank Fri Mar 28, 2014 4:56 pm

    Thanks, Bob. So, I swapped all tubes L+R. I'll wait to see if/when the noise recurs, then swap drivers.
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    • Post n°4

    Is failure imminent? Empty Re: Is failure imminent?

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