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


    New board for Stereo 70 project?

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    ricohman

    Posts : 11
    Join date : 2012-12-24

    New board for Stereo 70 project?

    Post by ricohman on Thu Jul 25, 2013 3:59 pm

    I have recently purchased a Stereo 70 and I have been reading many threads on what needs to be done. I have decided on the VTA 70 board and I will also be doing the rectifier mod and adding a new choke and tubes.
    Does using the VTA board require any special modifications to the amp? I am not a raw beginner but I was mostly hoping it would be an easy install. Is there anything else that needs attention, besides the caps under the deck and the can?
    Here are a few pics of my project.

    I need an emblem though.






    stewdan

    Posts : 161
    Join date : 2010-03-07
    Age : 78
    Location : Houston Texas

    Re: New board for Stereo 70 project?

    Post by stewdan on Thu Jul 25, 2013 4:48 pm

    Hi --- there are 2 links on the www.tubes4hifi.com webpage that are usefull, down towards the bottom of the page.

    #1
    http://www.tubes4hifi.com/VTA70wiringdiagram3.GIF  --- this is a wiring diagram with colored wires.


    And the other link shows the rebuild step-by-step process on the ST70 with photos and textual description.  

    #2
    http://www.tubes4hifi.com/VTA70install.htm

    stewdan

    Posts : 161
    Join date : 2010-03-07
    Age : 78
    Location : Houston Texas

    Re: New board for Stereo 70 project?

    Post by stewdan on Sun Jul 28, 2013 9:56 am

    Hi again -- the 2nd link is again active, I asked Roy to re-activate it.  It should help. Any other questions just ask.  Your ST-70 looks very nice and almost new, did you get it like that or did it take lots of elbow grease?.

    Have fun!

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