Was this from an external drive at all (3.5" I'm presuming?).
I get a few drives in each year with blown (shorted rather) TVS diodes and they're always from external enclosures.
Good advice from Wraper, especially if you do remove the TVS's and it comes good again, last thing you want to do is blow the board with a glitch.
Usually I always just clone the data/drive with ddrescue straight to an image and write off the old drive as an overly paranoid precaution