YAMAHA CLP-550 without of sound

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  • AlexVG
    Senior Member
    • Apr 2022
    • 132
    • SPAIN
    #1

    YAMAHA CLP-550 without of sound

    Hi.
    I have an old YAMAHA CLP-550 without sound. (Some times I can get some kind of noise or distorted sound)
    I have replaced all green marked elements, but it gave me nothing.
    The IC12 chip LC9116A-105 (red marked) remains under suspicion yet.
    Click image for larger version Name: CAPs.jpg Views: 0 Size: 1.06 MB ID: 3654925
    But it is custom YAMAHA's chip, and I can't find any information about it.
    Maybe somebody came across with the same issue?
    Any information will be very useful. I will be very appreciated.
    Thank you.
    Last edited by AlexVG; 06-08-2025, 09:32 AM.
    Tags: None
    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 30931
      • Albion
      #2
      forget that.
      read the roms - they are compatable with 27c040
      these old yamaha keyboards are all losing their memory now.

      if you search the forum their is a long thread where we dumped several keyboards to get a single good set of chip dumps.

        Comment

        • stj
          Great Sage 齊天大聖
          • Dec 2009
          • 30931
          • Albion
          #3
          here:
          https://www.badcaps.net/forum/troubl...eyboard-output
          and
          https://www.badcaps.net/forum/troubl...p550-rom-codes

            Comment

            • AlexVG
              Senior Member
              • Apr 2022
              • 132
              • SPAIN
              #4
              Yes. Thank you!

                Comment

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