Posted 10 October 2012 - 11:39 PM
Where are you checking for the drive to show up? Have you looked in BIOS to see if it appears there?
When the hard drive spins up can you hear the heads move? Put your ear to the drive and listen. You can remove the circuit board from the drive and in a well lit room look for visible signs of damage (burned components, burn marks on the board).
Replacing the circuit board on the drive might work. The problem is you must match the board exactly. This not only means the same model drive but the same board layout and firmware. When drives are manufactured the companies are constantly updating the firmware (it can be twice in one week) and sometimes change the circuit board layout. You need an exact match. When I run into bad drives and need a donor board I photocopy the circuit board front and back and the front of the drive, then send the pictures to my suppliers for a match. If I get lucky I'll find one. I have had to unsolder the surface mount firmware chip from the old board to solder it on the new one to recover the drive and extract the data.
Let me know what you find.