Musical tea pot music box broken!?

I just received a beautiful old tea pot for my Birthday that plays tea for two. The music box is located on the bottom of the pot and winds. There is a "rod" on the bottom that, when wound, will start and stop the music when you lift the tea pot up. But unfortunately, I think I wound it too tight and now it won't work. When I turn the winder thing the other way, (sorry, I don't know the correct terms), it will still play the song, but won't play on its own. Can this be repaired?