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Fender Bassman 70 gut shot?

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  • Fender Bassman 70 gut shot?

    A while ago, I bought a non working Fender Bassman 70 UL amp. As it turns out the amp has been heavily modified/butchered. I am trying to rebuilt it to the original design. That I can find only the schematic is available. The wiring diagram does not exist.

    Does anyone have or have a source for some fairly detailed interior "gut" photos? I have found a few on the internet but they have new components so I am leery that it has been modded.

    Thanks!

  • #2
    I'm not sure about the difference between the '10' and the '70', but here is a layout someone transcribed for the 10 : https://www.tdpri.com/threads/ul-bas.../#post-7009887
    If you scroll through that thread, there are gutshots starting on the next page. Not sure if 70 or 10 model.

    And a gutshot for the 70 from a listing on reverb:

    Click image for larger version

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    Originally posted by Enzo
    I have a sign in my shop that says, "Never think up reasons not to check something."


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    • #3
      Since it is UL I'm wondering if the 70 is a two tube version of the 135? Not that that would help much, since that schematic doesn't have a layout either that I can find, but perhaps more opportunities.

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      • #4
        Originally posted by glebert View Post
        Since it is UL I'm wondering if the 70 is a two tube version of the 135? Not that that would help much, since that schematic doesn't have a layout either that I can find, but perhaps more opportunities.
        Guess not, since the 135 layouts I find have a big empty spot in the middle of the eyelet board. Here is a gutshot from audiofanzine that is supposed to be a 70, looks like an import model based on the red voltage selector knob.

        Click image for larger version

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        • #5
          Thanks guys. I will use the photos and schematic.

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