Maybe step down transformer is dead, or some protector inside it. CS80 asked more power then it could supply...
Just check it's output if there's voltage. If yes, you can check fuses in CS, but they are probably OK.
And never leave electric devices on when walking outside. Especially with unknown machine you switch on for the first time. I'd never do such thing. You never know which problem can appear, maybe even fire. That would be expensive lesson.
Daniel Forro
Hiya got a cs-80 from LA shipped by FedEX, arrived plugged it in, it is labelled 117 Volt 180W . I used a step-down converter rated at 75W - i used it for my Memorymoog Plus. The CS_80 worked beautifully, left it on went for a walk came back and it was off. The power switch is on but no light! No sound. Did i blow the fuse? Did i do some serious damage? I'm going to the electrical store first thing tomorrow to buy a high rested converter, will she return to life after my abuse?