Yamaha MM6 Keyboard Display is blank and No sound? Any ideas on fixing/resetting

Some kids played with our Yamaha MM6 keyboard. Don't know what they did.
Now the display is blank-blue color and no sound!
Power does come on but nothing more.
Any ideas on how to reset/fix?
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  1. aamozafari said:
    Some kids played with our Yamaha MM6 keyboard. Don't know what they did.
    Now the display is blank-blue color and no sound!
    Power does come on but nothing more.
    Any ideas on how to reset/fix?


    Did you get this figured out at all? I'm having a similar problem.
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