Sony replacement parts?

Hi, all. I just got a DRU-720A from BestBuy to replace my 6 month-old DW22A which quite abruptly stopped working. I bought it OEM at a Computer Show. Before I throw out the DW22A, I was wondering if there was an easy way to find specific parts for such drives. I suspect the spindle has gone bad and it would be quite easy to replace. I notice it’s made by Nidec. Any suggestions? Thanks very much.