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Help! My piano is broken (makes no sound). Its a Yamaha GDX-640. Everything about it is as normal but it is just not outputting ANY sound to the speakers nor to headphones.
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Yamaha DGX640 NO SOUND - How to repair faulty electric piano that has no sound from speakers - YouTube
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Yamaha NP-30 (faulty with no sound), Hobbies & Toys, Music & Media, Musical Instruments on Carousell
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