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Roland CUBE-40 Chorus Amp issue

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  • Roland CUBE-40 Chorus Amp issue

    Hi,
    I have a Roland CUBE-40 Chorus Amp with an annoying problem, when I turn the chorus switch on, there's a strong electric pulse (maybe a bad cap?).
    See the attached clip:
    https://youtu.be/sAXPQ5jPs3I
    I would like to fix this problem but I can't find the schematic for this amp (or the CUBE-60 Chorus).

    Does anyone have this schematic / any idea how to fix it?

  • #2
    One of the Jazz Chorus circuits may be similar if not the same.

    Here is the JC50: Roland JC-50 Jazz Chorus (Ed.2) Service Manual.zip

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    • #3
      smilan , did you ever figure it out? I'm having the same issue. Any tips in fixing it would be great.

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