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Yamaha NP-11 Keyboard No Volume/Audio/Sound Output, But Powers On Fine. Not Sure What the Problem Could Be. : r/ElectronicsRepair
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NP-11 - Overview - Piaggero - Keyboard Instruments - Musical Instruments - Products - Yamaha - Singapore
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NP-11 - Specs - Piaggero - Keyboard Instruments - Musical Instruments - Products - Yamaha - United States
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