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  • Yamaha Electone MC-600

    <FONT face="Courier New">I am trying to solve a power supply problem
    When the organ is turned on it will not always power up
    However if you tap the little 24v relay on the power supply unit, there is a loud pop and everything starts working
    I have de-soldered the relay and installed a brand new relay, but exactly the same fault

    I have now checked every single joint on the power supply board for dry joints

    Does anyone have any ideas or had experience of this problem and how they overcame it

    The unit PU number is ND3051F

    Any help will be greatly appreciated, thanks</FONT>

  • #2
    Re: Yamaha Electone MC-600



    from horst</p>

    your problem has to be a printed board problem or one of the power transistors</p>

    is sensitive to noise,bad soldering joint.</p>

    i lost my half keyboard lights.they are flasing on/off.
    </p>

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