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 products

    I'm damaged goods.


    Posts : 100
    Join date : 2018-12-03

    I'm damaged goods. Empty I'm damaged goods.

    Post by bbqjoe on Sat Mar 30, 2019 9:27 pm

    When I built my VTA-120, it worked great right off the bat.
    I played it about 6 hours, then took it back into the shop to clean it up, zip tie the wiring, and close it up.
    I didn't notice it, but I broke a wire when tying.

    When I turned the amp on in the house, there was a large flash and snap from inside, a nice sizzle, and the magic smoke.
    The sound coming from the speakers made it even more exciting.

    A new switch, a new resistor and some wiring fixed it right up.

    Now every time I turn it on, my mind races back to the snap, crackle pop!

    Recently, I was sitting at my desk listening to tunes, when I heard a pop, and the music got a bit louder.
    I went to the amp, and two power tubes were busy red plating.
    I shut it down immediately.

    Apparently, 1 tube gave up the ghost, roasted the other, and took out a resistor with it.

    I ordered 2 new tubes, and replaced the resistor.

    I got it all back together, and plugged it in.

    Just as I was flipping the on switch, my wife was right behind me, and gave a fly hellacious swat.

    I will never be the same.

    Posts : 2255
    Join date : 2012-05-23
    Location : Wallace, Idaho

    I'm damaged goods. Empty First good laugh . . .

    Post by deepee99 on Sat Mar 30, 2019 10:44 pm

    . . . of the day.
    You'll prolly need two resistors. Have one handy in case the volcano blows again.

    Posts : 113
    Join date : 2013-07-13
    Location : Rochester NY

    I'm damaged goods. Empty Re: I'm damaged goods.

    Post by WLT on Sun Mar 31, 2019 9:06 am

    Sounds like your wife is a keeper. We will see if the amp is a keeper after the testing period.

    Posts : 746
    Join date : 2013-03-19
    Location : It can get windy here

    I'm damaged goods. Empty Re: I'm damaged goods.

    Post by corndog71 on Sun Mar 31, 2019 3:01 pm

    Lol! Tube audio ptsd is a real thing! Especially with rectifiers and power tube failures.

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    I'm damaged goods. Empty Re: I'm damaged goods.

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