MC-505 , Roland drum machine , schematic please

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  • zen
    Badcaps Veteran
    • Apr 2011
    • 511

    #1

    MC-505 , Roland drum machine , schematic please

    No experience whatsoever on this unit & hoping someone can help.


    No audio from keyboard when , BD , SD , or Others selected ( see pictures )
    Attached Files
  • stj
    Great Sage 齊天大聖
    • Dec 2009
    • 31002
    • Albion

    #2
    Re: MC-505 , Roland drum machine , schematic please

    the liquid spill is obvious - check for corrosion everywhere

    Comment

    • zen
      Badcaps Veteran
      • Apr 2011
      • 511

      #3
      Re: MC-505 , Roland drum machine , schematic please

      Hi & thanks

      No liquid damage

      Seem like a genuine failure .

      Comment

      • stj
        Great Sage 齊天大聖
        • Dec 2009
        • 31002
        • Albion

        #4
        Re: MC-505 , Roland drum machine , schematic please

        nothing to see on the top, got a photo of the other side?
        and that other board in the center too.

        Comment

        • zen
          Badcaps Veteran
          • Apr 2011
          • 511

          #5
          Re: MC-505 , Roland drum machine , schematic please

          Have managed to source a service manual .

          Will update with some info & more picture when i have a chance to work on it again .

          Thanks once again for your advice .

          Comment

          • zen
            Badcaps Veteran
            • Apr 2011
            • 511

            #6
            Re: MC-505 , Roland drum machine , schematic please

            Managed to restore missing functions with a system reset .

            Power on while holding down SHIFT, then press ENTER. Note, this procedure takes
            several minutes

            Comment

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