There is an internal battery in the SD1, that needs to be replaced. The battery cost is under $5, but a service tech will charge around $45 to replace it..
They usually last upwards to 10 years..
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Roland G70 (2007), Roland A800 PRO, MediaStation X-76....and a custom Busilacchio accordion (1964)..4 Roland Cube 100 keyboard amps (1985)..Edirol M-10DX mixer (2010).. Toshiba Satellite laptop..and Podium Pro 1205a powered speaker

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