|If you fried the circuitboard on the drive you have two options.|
One is buy an identical drive and swap circuitboards. Two, is to send it to a data recovery company so they can do a platter scan & recovery.
Option one comes with no guarantee since the circuitboard might not have been the only thing damaged. You would also need to be certain the new circuitboard came from a drive manufactured in the same series as your deadun. Option 2 is prohibitively expensive.
At this point in time you have nothing to lose in attempting option one.
Goin' Fishin' (Some day)