Disconnecting The Polarity Switch On A '73 Marshall

Discussion in 'The Workbench' started by buddy7168, Jan 7, 2017.

  1. buddy7168

    buddy7168 Member

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    I’d like to disconnect the Polarity Switch and Death Cap from my ’73 Marshall. I’ve read a few threads that say as long as you have a three prong power cable (which I do) you can simply disconnect the Polarity Switch from the Power Switch. I noticed however that I have a light blue wire (from PT) as well as a yellow wire (from fuse) connected to the Polarity Switch. Do these need to be relocated and if so, where? Thanks in advance for your help!

    Polarity Switch Close Up

    [​IMG]

    In Context
    [​IMG]
     
  2. ampmadscientist

    ampmadscientist Well-Known Member

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    In your bathtub.
    What model is that, 1959?
     
  3. buddy7168

    buddy7168 Member

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    It's a 1987.
     
  4. ampmadscientist

    ampmadscientist Well-Known Member

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    Location:
    In your bathtub.
    It's hard to see because the photo is so dark, but...
    There is no polarity sw on the schematic...but,
    clip both (far) ends of the capacitor leads, at the very end of the lead. Then pull the cap out (it's glued in...)
    Then at least the death cap is disconnected from the chassis, and disarmed permanently.
    Hard to tell how they wired the switch, but the switch won't do anything when the cap is removed.
     
  5. buddy7168

    buddy7168 Member

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    I did this and it worked out fine. Thanks for your help!
     
  6. ampmadscientist

    ampmadscientist Well-Known Member

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    Location:
    In your bathtub.
    Now you are ready to modify it, into 2204.
     

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