If you are truly brave (and I mean truly) and have some cash to flush down the toilet, you could try transferring the platters to another hard drive rigging.

Sound easy? Not so fast.

First you'd need another hard drive that is exactly - AND I MEAN EXACTLY the same. As in, you probably need one from a production run that is in the same time period. It needs the hardware and firmware to be precisely identical or it may well not work. If there's a .5 at the end of the six-part version number for the candidate's firmware, and yours runs a .4 or a .6 or a .5a or a .5.1, you may be SOL. How likely is that? I don't know, but everything I've read indicates you shouldn't get your hopes up. There are also probably any number of things that can go wrong.

Next, if you're lucky you may not have to crack the hard drive open at all, and instead may just have to replace the circuit board. I've seen this happen on the Internet, but I have no idea of how to do it, nor how to keep it from going bad. That said, if it won't recognize the chips and the motor doesn't start up, I suspect it may be the circuit board literally not directing the motor to get power (or doing so improperly) and not communicating properly with the computer.

If you are UNLUCKY you need to crack open the hard drive casing on both drives and then physically transfer the platters. Keep in mind that this may well destroy thte hard drives in and of itself. From what I have read, many people can get their hard drives operating decently well for a short period of time (hours? Days?) outside of a clean room, but once you crack that drive open, that hard drive is like a freshly decapitated chicken - it's dead, it just doesn't know it yet. So you've got two hard-drive chickens dying at once, and have to dump the contents to a third drive before they realize they're dead. AFAIK this is very similar to what is generally done on hard drives by professional data recovery firms, albeit with much more advanced equipment and dedicated clean rooms.

Finally, either way, you have a freakish, Frankenstien-esque hybrid drive now shambling inevitably and rapidly towards oblivion. Before it does, you then try to transfer the data off the drive - hopefully not having shorted anything out in the process.

So at the end, you have one functioning drive you ruined, one dead drive you gutted, and maybe some of the data on a third drive - and if you really fucked up with the circuit board maybe another dead part or two.

There may be additional options if it is a hybrid SSD/magnetic platter hard disk, but I wouldn't hold my breath - SSDs seem to be a very sticky widget in terms of data recovery, especially since it seems like their chips are designed to prevent any sort of outside interference regarding their operation, precluding a lot of recovery techniques that might, say, recover data in cells that are marked as erased, but haven't actually been overwritten.

I am not an expert and I am sorry that I can't offer more advice, or at least advice with experience. But good luck.