This Korg MS-10 belongs to the same musician as the MS-2000 mentioned elsewhere.
It is an import from Japan, and thus is meant for 100V mains. Unfortunately, my friend plugged it
in the 220V AC used over here in Belgium. The result of this questionable move can be seen in the pictures below: an exploded capacitor, it's guts spread all over the place ! My friend was very lucky: this capacitor miraculously took on him the whole extra unwanted 120V, and no other vital parts suffered any damage. So, it was an easy repair: an adequate transformer secured to the chassis, a few capacitors changed and there you go. A classic ready for the future... Below are some pictures.