Does your drive buzz or vibrate as if trying to spin up?
Does it prevent your PC from POSTing?
Can you see any damage on the component side of the circuit board?
If you replace the board, you will need to transplant the serial EEPROM chip (flash) from patient to donor. This is because it stores unique, drive specific calibration data.
See the following article for help in identifying the components.
HDD from inside Main parts:
http://hddscan.com/doc/HDD_from_inside.html