I have taken a wd 1 tb drive out of the casing and put it in a dock...no problems?
Edit: I just realised I didn't specify that only applies to their 2.5" external drives (as far as I know).
You must have an older model or 3.5" one. They are now absolute junk.
http://www.tomshardware.com/forum/291563-32-dead-sata
http://www.tomshardware.com/forum/281510-32-damaged-micro-soldered-elements-external
http://www.tomshardware.com/answers/id-1761677/2tb-passport-connect.html
http://bychaw.blogspot.com.au/2011/12/how-to-tell-if-your-external-usb-drive.html
http://community.wd.com/t5/WD-Porta...irectly-to-PC-via-SATA-connection/td-p/436554
http://www.datarecoverytools.co.uk/...-western-digital-drives-with-hd-doctor-suite/
http://forum.hddguru.com/viewtopic.php?t=14340&start=