I do not know what hapened, but I seem to have a dead drive.
I may have tried using a 19v powersupply, but I’m not sure. I luckily thought that it was just a matter of transplanting that drive to my other My Book, but alas that did not work. Confirming atleast that it is not that My Book, the first My Book now worked fine with the other drive.
The drive is a WD2500JB, so the question is: Is it just a matter of transplanting the circuit-board from the one working to the other not working. Or is there a fuse that is blown deep inside the drive?
Any thoughts or insights is greatly appreciated!