Did something dumb a while back and plugged the wrong voltage PSU into an OB Systemizer MIDI controller unit, to the point that it started to smoke. Quickly unplugged it, but of course it no longer works. Nothing appears to have melted. Did I damage the cards/electronics in it or would it have been the voltage regulator or both? Any hope of getting it to work again? They are rare now and it’s a great keyboard tool. Thanks!