Second faulty power cable

Hi i have the mybook studio raid system. The power cable has died for a second time. The mybook is still working and i can power it from another wd power cable that i own but it is not as powerful as it is from a esstinals single drive. Do i need to send the whole unit back or can i just return the faulty power cable. Obiviously sending in the post my hard drive with data that could be damaged in transit or lost is not ideal for what i know to be a dead power cable. case number 

[Content deleted - Trancer]

Hi rplayer, I recommend you to contact WD support directly, they can send you a replacement power cable. I advice you to not use another power supply if it doesn’t have the same specs as the original one.