I have a problem with a western digital 1TB external hard drive. It began when I (stupidly) connected the wrong power lead to the hard drive- as a result the drive could not be powered up. After reading on various forums that I was not the first to do this I found people had recovered their data by replacing the pcb I did a little research and found a company who could supply a cloned version from my original pcb to make it compatible to my own drive. I received the new pcb today and when attached to the drive it can be heard to power and spin which is a good sign however my mac book pro is not detecting the drive in finder or in disc utility- after various attempts I did get a short message saying something about not being recognised but this only appeared once of the several times I have connected it. Can anyone give me some advise on what else I can try to recover the data? Many thanks, Joe.