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  • September 15, 2011 at 1:20 am #81898
    mtrvl
    Member

    I have an original Big Muff Pi that I have owned since about 1970. My problem is the RED Battery lead has become disconnected . The BLACK lead is still attached. Can anybody tell me where to re-connect the RED lead? EH no longer has support for the early Vintage units. Any help would be GREATLY appreciated. Thank you.

    September 16, 2011 at 3:44 am #116025
    devnulljp
    Participant

    Kinda depends on which version it is. Can you post a gutshot?
    If it has a power supply jack, the red wire would usually go there.
    like this for a v3 EH3003
    [img]”http://www.kitrae.net/music/Version 3 board c.jpg”[/img]

    September 16, 2011 at 6:14 am #116029
    mtrvl
    Member

    Thank you for your reply. This particular unit it one of the earliest versions, and it does not have a power supply jack.

    September 16, 2011 at 6:26 am #116030
    devnulljp
    Participant

    Then it goes to the middle lug of the switch (providing it’s standard NPN that is: FS36999/2n5133/2n5088 trannies, black wire goes to ground).
    You can run it straight to the switch or via that pad on the 3003 board. Doesn’t make any difference (AFAIK).

    [img]”http://www.kitrae.net/music/1974 V2 with batt clip replaced.jpg”[/img]

    If it’s a triangle, wire it like this (same deal)

    [img]”http://www.kitrae.net/music/Triangle Muff PCB.jpg”[/img]

    September 17, 2011 at 1:05 am #116036
    mtrvl
    Member

    That looks like it should work. Thank you so very much. Have to keep this vintage stuff alive. It’s music history.

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