Yamaha portable grand DGX-640 blue screen no sound

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My Yamaha portable grand DGX-640
Does not work ,the screen is blue when I turn it on and I have no sound , I tried resetting it but It doesn’t work at all I hope someone can help me with it .
 

SeaGtGruff

I meant to play that note!
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It sounds like something inside the keyboard-- some transistor or other circuit-- may have burned out or failed in some other way. The best thing to do might be to get the keyboard repaired or just replace it. However, you might still be able to use it as a keyboard controller for playing virtual instruments on your computer.
 

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