I'd question the likelyhood of a new PCB fixing a clicking disk, but it's possible. You can always give it the ol' karma whack, but I doubt that'd be much help either. Some people swear by the freezer, and I've seen it appear to work once. If you do get it spinning and somewhat working, I highly recommend rstudio, the company is a real pain to deal with but I've never found anything comparable for recovering files.

Matthew