Hopefully it didn't get damaged with the 12V but it sounds like it did. I would try putting batteries in it before you buy a 6V adapter.I bought it at a flea market and it had a 12 volt power supply with it. It worked when the guy plugged it up and now it wont work. It does have a battery tray for 4 1.5 volt batteries thats why i was asking about the volts. So i should get a 6 volt power supply?