Question about Casio Keyboard Power Adapter

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I have one key out of tune. I wonder, could the problem be a bad power supply?

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In a word, NO. We have no idea which keyboard you have. If the pitch is off that is HIGHLY unlikely. A common problem however is a dirty key contact causing a note to be very loud as if hit hard and fast. The contacts are conductive rubber and require disassembly and cleaaning the rubber pills and the circuit traces they contact with ONLY 99% isoprophyl alcohol and Q tips. There are two per key to measure velocity.

Posted on Mar 30, 2011

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