Western Digital WD2500JB (WD Caviar SE) external hard drive died.

That would be on another WD2500JB Caviar harddrive

Either that, or start looking on the internet posting -
WD2500JB PCB Board, and see what search hits come up.

Here,.....let me try.............

http://www.hdd-parts.com/18100096.html

Before you replace it, let me ask........
1) Was it in a Desktop PC?

2) Was it in an external harddrive?

External harddrive?
Then suggest you obtain a 3.5 IDE (PATA) external enclosure,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3883498&CatId=2780

In an external harddrive there is a small interface circuit board.

The Harddrive plugs into the small interface circuit board, and the USB cable is attached to the small interface circuit board.

It is this small interface circuit board that usually goes bad.

The external enclosure is just like the case of the external harddrive.
Has a USB cable going to a small interface circuit board, and the harddrive plugs into it.

Regards,
joecoolvette

Western Digital PCB Swap Replacement Guide

Does the drive make any sounds, even a spinning up sound? Are you using it in an external case or just inside your computer?
Also, is this a drive you've been using and you have data on it, or is it a new drive?

You should be able to find one here http://www.hdd-parts.com/wd-caviar-se.html

If it is an "external" drive, you can open the casing, remove the disk-drive, and "transplant" the disk-drive into a new, "empty", enclosure (about $30 at any computer-store).

If it is an "internal" drive, you'll have to find an identical disk-drive, split the "electronic" circuit-board from the "spinning" part, on both drives, and then connect the "good" circuit-board to your disk-drive.

Then, you can access your files.

That is an old drive. No need to buy an exact replacement since that one is so old. Any hard drive will do. If your BIOS supports a larger drive, you can get an even higher capacity drive to replace it.

It is not necessary to buy an exact replacement hard drive. You can even replace the drive with a larger capacity drive. Find a local shop or look online.

Get a new case for the drive. Empty cases can be had from any store that sells computer parts.

Your hard drive is bad. If you are hearing clicking reptitiously it is you head not moving. Sorry about the bad news.

It's possible that the controller board on the underside of the drive has failed.