Ok I accidentally plugged in a 19v laptop adapter onto an external maxtor enclosure (woops!)

And it fried, attempting to plug it into the normal 12v afterwards caused the PCB to just smoke, I didn't look at which part smoked instead immediately opted to unplug the drive. I've seen (based on other posts) that this is not uncommon, but which part should I remove/replace to get it back working in an enclosure.

I'm guessing it's one of the 2 top right Diodes (I think I remember seeing one of them fry)

Far right Diode: 721 LEM
Slightly left of it: QE R721

"LEM" is the 12V TVS diode. That's the usual suspect.

See http://www.users.on.net/~fzabkar/HDD/TVS_diode_FAQ.html

_________________
A backup a day keeps DR away.

Thanks very much! exactly what I was looking for.