I burned up the transformer in my Radio Shack Electronics Learning Lab. They don't list any parts for them as far as I can tell. This thing was glued in. I'm sure it wasn't intended to be replaced. Just the same-- I'd like to repair it if possible. It's got this number on top but it doesn't Google up. 102381690A. I realize any number of vendors may have stuff like this but I don't know how to do a search. Any suggestions? Thanks