Hello, we have had the above toy given to us from a friend, but although battery was charged overnight, I can only get toy to play the music and noises. Even when on the track? I am more than happy to get new battery, if this may be the fault, but could there be a motor problem? Toy does not appear damaged in any way, and was assured it worked fine when it was given to us. Can the battery get so worn out that it will hold voltage to make noises but not enough power to turn wheels ??