Hi;

   I have an On30 trolley set that goes out from a train shed, along some track pieces, and then stops at a bumper. After a set time limit, the trolley reverses and goes back into the shed and parks for a set time.
   My transformer that plugs into the wall and connects to the back of the train shed, did not work any more after last Christmas, and was thrown away. I need to get a new one, but do not know what ( voltage and if it was AC or DC ), that it put out when it was working properly. Would you happen to know? Also, is that something I can purchase from the factory, and what would it cost?
  I have seen different styles/ kinds of these at some of the stores around here, but want to get the right one, so the power supply/shed is not damaged.

                                           Thank you for any help in this matter;    Dan