kolderman wrote:Just get a new rectifier psu with matching voltage and minimum amps...that's it.
No, that's it not! Roland PSUs are center-negative. Almost all PSUs you'll find these days are center-positive, as that became standard, and they will fry the unit. So either get one that is advertised as being for Roland units, or get a normal one and swap the wires before using it. It's okay to pay 10 bucks for a PSU. Stay away from the cheapest China crap that you get almost for free.
ps: Roland PSUs are all compatible. All are 9V DC with a center-negative coaxial connector. Most had 500mA, a few 800mA, one or two 1000mA (for those with built-in floppy disk drives). The SC-88VL should work with 500mA already, but since more doesn't matter here, get one with 1000mA. This will allow using it for any Roland unit.