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Thread: YAMAHA D-85: UPPER Keyboard

  1. #1
    Newbie Dhomski's Avatar
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    YAMAHA D-85: UPPER Keyboard

    Hi,

    I'm having a yamaha D85 electone and I 'm having problem with the Upper Flute and Orchestra.
    To Isolate the problem: Here is the condition of the unit now...

    * The BALANCE for L & U manual is not functioning..
    * Symphonic chorus is not functioning also.
    * The aTTACK is not functioning (but it's not major issue)
    * VIBRATO ,DEPT and DELAY not working.
    * The Upper ensemble is working but min sound


    The rest of the organ is working... the Lead keyboard, the lower keyboard the rythm all working..
    when I playing the lower keyboard and the lower tremolo is on .. When I switch the symponic it's not functioning..

    Action: I noticed that the upper circuit board has no audio same as the others circuit. I also change all the IC on that circuit but it's remain the same..
    Any suggestion will be highly appreciated..

    thanks
    dhomski

  2. #2

    Hello,
    I have a D80 Yamaha and I had to replace one of the power amplifier aluminum heat sink items with the power transistor mounted on it to repair mine when some of the sound failed. Hope that helps you sir.
    Tim

  3. #3
    Newbie Dhomski's Avatar
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    Talking

    Quote Originally Posted by tjsbeaner View Post
    Hello,
    I have a D80 Yamaha and I had to replace one of the power amplifier aluminum heat sink items with the power transistor mounted on it to repair mine when some of the sound failed. Hope that helps you sir.
    Tim
    Sir Tim,

    Thank you for the reply. I will try to look that power transistor... hope that this d85 will work again.. thanks again..

    dhomski

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