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1963 Fender Blond Bassman 6G6-B circuit static noise

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  • 1963 Fender Blond Bassman 6G6-B circuit static noise

    Wondering if anyone has an idea where to "look".

    I have a static sound im trying to pin point. Im in channel 2 which is the "Normal channel", no tubes in channel 1 which is the Bass channel. I have 2 good/tested 12ax7 tubes, one in v3, and one in the phase inverter socket. If I pull the v3 tube I still get static, If I pull the PI Tube, leaving V3 in place the static goes away. Does this pinpoint that the problem is possibly somewhere in the PI circuit? any help would be appreciated.

    Also, this happens with my guitar (lapsteel) is not plugged in, so its not my guitar rig

    thanks in advance,

    Smitty
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  • #2
    I would look at noisy plate resistors in the phase inverter circuit.

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    • #3
      I started replacing plate load resistors starting at V1, I will continue through until the "sizzling bacon" noise stops (hopefully) This amplifier was given to me, and sat in a basement for 40 years, which would occasionally flood. This is a testament to Leo Fenders workmanship, as it still operates, and sounds fantastic! although this has been quite a project! I will post my results when Ive completed replaceing the plate load resistors.

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