I have dropped my external hard drive. I have taken apart my WD 2.0TB and found that the usb is not broken but my power source has broken off. Is there a web site where I can replace the logic board? Where can I find the serial number of my logic board to get the right one?My drive works perfectly fine and I dont want to go through purchasing another and transfering all my data on another drive just for a broken power pin. Please Help!!!