Vintage Synth Repair

>>I have resolved to use a step up transformer to power my newly
> acquired Roland System 100 Mixer (25 watts).<<

ah, & after all that.... radio shack, then. or circuit city,
whatever's closest to you. remember to check the power ratings
carefully- some of these widgets have a caveat on the packaging in
tiny letters, to the effect that they are "not for continuous use", so
you need to buy one that's seemingly over-rated for your purposes to
be on the safe side. you will, of course, be running your whole system
100 for extended periods of time... :-)  I have my 104 twinkling away
behind me right now.
I wish I lived closer- I'd fit the proper trafo for you.

duncan/london-UK