My Book Essential 2TB is Getting Slow

Thanks for replays. Can I use the exact same controller (another My Book essential) and put my hard drive inside? Does it work? Does it more look like a controller fault or hard drive? (btw LGD failed on both quick and extended test)

And last question. If I put the hard drive inside a computer (MAC Pro) or another HUB which they both offer a format and create a partition, can i be able to recover my data after formating and creating a partition? (because I’m not looking for a replacement. It’s been a year and I’ve oppened the device so there is no warranty and I really care abt my data more than the device at the moment)

Thanks a lot.