Yo! Just bought myself an untested Alesis Midiverb II with no power supply for less than the price of a tank of gas. I already have an Alesis adapter that I was pretty sure would fit, so I took the risk. Well, the poor girl isn't working. I plug in the power supply and everything lights up and the buttons respond appropriately, but no sound comes through. When I turn the Output knob all the way up I do get a sudden onset of mild humming in about the last 1/8 of the control range. Also, the overload light is constantly lit, while the green signal light doesn't responds at all. It happens regardless of which of the two input jacks I'm plugged into. Any ideas?