I am currently looking for a replacement power supply for an older model of electronic keyboard (piano). The 15vdc power supply for the amplifier PCB has deteriorated beyond repair and I am left with either scratch building a new one or finding a replacement with the same outputs. The power supply has a basic IC regulated +15 -15v dual output and also a single -20v output. In simple terms, what would the -20v be used for in this case?
Any input would be appreciated.
Thanks
Any input would be appreciated.
Thanks
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