Shabuboy wrote:
This guide will show you how to recover data, if possible and how to replace the drive.
http://community.wd.com/t5/My-Book-Live/GUIDE-How-to-unbrick-a-totally-dead-MBL/m-p/435724
There is also a Version 2, which suppose to be easier.
Note that this Guide gives you the chance to choose the size of drive you put in. It’s easy to put in a 3 TB; there’s a 3 TB image. I suspect that you could do a 4TB by enlarging the 3 TB data partition. Partition enlarging is also described in the Guide.
Here is the Version 2 Guide. There are new-unit drive images you can download and the procedure for installing them.
http://community.wd.com/t5/My-Book-Live/GUIDE-Debrick-MyBookLive-v2-0/m-p/567582#M22126
For a single drive unit this should be very a straightforward operation.
nfodiz did a great job putting the guides together. He definitely deserves the love!