The fridge trick is an outdated trick that no longer applies / it was a neat approach to fluid filled bearings on the head that began failure. There are no more fluid filled bearings in active hard drive production.
about the only thing I can tell you is to give a vendor by the name Darius on ebay at shot at the drive >>>> he will not charge very much if he is not successful
http://cgi.ebay.com/PCB-for-Western-...QQcmdZViewItem
this is about the only fella that i know of that has any REAL chance of fixing your drive for under $250.00 >>>> if he is unsuccessful he charges about $20.00 labor and $20.00 return shipping
other than that/ fill out an RMA warranty form at western digital website and get a replacement drive >>>> but they will do nothing for your data.
dont hesitate to ask more questions