As long as only the hdd controller board is the only problem (which is most likely since there is VERY little electronics inside the hdd, most commonly a relay chip and a motor, if you are able to find an identical hdd you should be able to revive the dead hard drive. There are possible complications though...
The controller board might be a different revision, most times this is not a problem, some times it is... IE clicking arm of death
There could have been damage to your data, including sector 0 if your computer was on/booting at the time of the incident. This could leave you with needing to run an array of various pieces of software to fix the partition information/boot record and such before you can recover data.
Keep in mind that since 99.9 percent of the electronics are on the controller card, there is ABSOLUTELY no reason to break the seal of the platter casing. If replacing the controller card does not fix it, there is no feasible consumer grade fix for the hdd.