help finding parts

[.:.. ',.-]

i know this is slightly off-topic, but i can't find a replacement transformer for a roland tr808 anywhere.
the specs are 120VAC primary, with a dual secondary of 10VAC, and 23VAC (x2 -3 wires with center tap), and it has to be small enough to fit inside the unit (about 2.5 inches high). 
of course roland doesn't have it, and the major places (mouser;etc.) don't have anything similar enough.

any help would be appreciated.

thanx.
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