The Dynaco Tube Audio Forum

Would you like to react to this message? Create an account in a few clicks or log in to continue.
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


5 posters

    Newbie problems with a ST-70 rebuild VTA70 driver board / bias display: no sound

    Roy Mottram
    Roy Mottram
    Admin


    Posts : 1839
    Join date : 2008-11-30

    Newbie problems with a ST-70 rebuild VTA70 driver board / bias display: no sound - Page 2 Empty Re: Newbie problems with a ST-70 rebuild VTA70 driver board / bias display: no sound

    Post by Roy Mottram Thu Nov 16, 2023 2:21 pm

    the LM334 that was in backwards needs to be replaced.
    Also the one cap in this photo needs to be relocated as shown

    Newbie problems with a ST-70 rebuild VTA70 driver board / bias display: no sound - Page 2 St70_c10

      Current date/time is Wed Oct 09, 2024 1:57 am