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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


    Correct TOP surface and tube socket location for MK3 PCB

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    TN Allen

    Posts : 124
    Join date : 2013-01-01

    Correct TOP surface and tube socket location for MK3 PCB

    Post by TN Allen on Tue Dec 31, 2013 3:38 pm

    I'm assembling an MK3 PCB and want to be certain I am locating the tube sockets on the TOP of the PCB. From what I can see in the photos on the tubes4hifi website the sockets should be on the side of the PCB that has no text. Is this correct?

    Thank you.

    stewdan

    Posts : 160
    Join date : 2010-03-07
    Age : 78
    Location : Houston Texas

    Re: Correct TOP surface and tube socket location for MK3 PCB

    Post by stewdan on Wed Jan 01, 2014 12:11 am

    Hi - Yes, you are correct. Top side, no writing. (Also, if the sockets are mounted on the topside of the PCB, they will be in a straight line with the RCA Input Jack.)

    Actually, the way that I tell what the bottom side of a VTA PCB is, is to look for the ground solder trace that goes all around the perimeter of the PCB and makes contact with the mounting holes.

    On some of the VTA PCBs the trace looks like it is bare solder and on others it has a greenish coating which I believe they call a solder mask.  

    If you have any other questions, ask away.

    Have fun,
    Stew

    sKiZo

    Posts : 1285
    Join date : 2013-04-01
    Location : Michigan USA

    Re: Correct TOP surface and tube socket location for MK3 PCB

    Post by sKiZo on Wed Jan 01, 2014 3:51 pm

    No worries if you get it wrong ... just mount the board in backwards and insert the tubes upside down ...  geek 

    PS ... some nice pics on Roy's site that should help ...

    http://tubes4hifi.com/MK3.htm


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