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Rodgers 705 volume

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  • Rodgers 705 volume

    Hi,

    I have a church in the area that's having a problem with their Rodgers 705 (not sure which version).
    The volume went to max and they can't control it.
    Is the expression pedal on these optical or just a standard potentiometer?
    Any help would be appreciated.

    Thanks!

  • #2
    It uses a soldered in 6022 lamp on the preamp board. It's located under a black cover that pulls off. There was a modification to use a CW23 lamp when Rodgers no longer had the 6022.
    td
    Servicing electronic organs since 1969.

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    • #3
      Note that the expression pedal has a standard pot--I'm pretty sure the signal from the pot is read by the microprocessor, which controls the lamp driver, with subsequent CdS photocell to do the actual expression control.

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