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Yamaha yc45d faulty

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  • Yamaha yc45d faulty

    Hi,
    I,m working on a yc45d.
    I fixed the psu. (Replaced power transistor and recapped)
    However I still have problems with the piano and vibraphone sounds. It doesn't sound complete compared to youtube demo's.
    Also the touch respons doesn't work.
    I think it is related.
    All zener diodes are Ok.
    I don't know where to look :-(
    I have the schematics but they don't show tensions and scope views.
    Any ideas?
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