2013 Once Upon A Christmas #3 - Snug Fit for Santa

I love this set enough that when I found this one not working this year, I went ahead and ordered a new one. I don't know why the first one quit working, I pack them up carefully each year and all the older ones are still fine. The grandkids love to push the button and hear the song; and the lights just make the set look so merry. However, if others quit working I don't know that I want to replace them at the high costs. Is there a way to repair them. The local store was not helpful.