Hey Pal, if you can get your money back, get it!
It will cost $100 to change the drive yourself. You are better off getting a new, drive-less WDTV and adding your own HD.
If you are still considering this idea of replacing the drive yourself, see this link with a DIY video to open the HUB, along with my post regarding the futility of trying to repair a HUB. Some things are disposible and not worth fixing – the HUB comes under this category.
