Lacie 2TB Big Disk Extreme Firewire 800 firewire 400 hi-speed usb2 7200 rpm sku 301201u knocked

Question

I have a Lacie 2TB Big Disk Extreme + Firewire 800 firewire 400 hi-speed usb2 7200 rpm sku 301201u , which I have been using with an emac ( 1ghz power pc 4 , macos 10.5.8 ) for past few years.
A couple of days ago The drive was hit rather hard on side while on and up , the computer hung as the computer was up on a mac os 10.5.8 partition on this drive . Computer was rebooted and comes up on internal drive, lacie drive just made beep and click sounds ( i am actually deaf and this was what I was told ) every couple of seconds. Attempt was made to boot on CD to use latest available disk utility ( Macos 10.5). Lacie still does not show up. 15-20 minutes into this, I powered lacie down. This is when I started noticing a burned circuitry smell.I powered lacie down and disconnected it at this point.
Most Folks just suggest data recovery which can cost as much as $3000 or more which I really don't have .
I figured I open and examine the internalsof drive . I did so. The circuitry smells
like burned near the point where power comes in and the death diode is located, otherwise circuitry looks fine. One of the two drives , when taken out did not have a burnt smell and the other had a burnt smell towards the center but it dissipated in about an hour after it was taken out. There also was one loose screw inside drives chasing which ended up being one of the 4 screws that holds the disk drive's circuitry. I dont know but I don't think this could have shorted anything out but even though slim it is possible that such happened.
While I have Three DC voltmeters, I could not find the one that would accurately measure the voltage on the external power suppy to see if the output voltage on the 4 pins is accurate . I am still looking for the one meter that can do this.
I figured if I can find the exact drive in like new condition and swap the disks, if the disks are not damaged and if the culprit is actually burnt circuitry, then the drives should come up as they were as though nothing had happened.
I talked to a friend that suggested getting other cases and swapping disks but I guess that is not possible because the two disks are raided? ( raid 0 ) . I am also not even sure if the drives are raided the way they were put into use ( only through firewire 400) as the documentation suggests that only firewire 800 denotes use of built in raid0 but I am not sure. So again assumption is made that the drives are raided .
I contacted dealership of the drive which again suggest that Unfortunately it is not possible to obtain another drive like this one because it has been obsolete and out of manufacture for a long time.  It is also a risky idea because if the problem is not with the drive enclosure hardware, there is a genuine risk of making the recovery process more difficult, or impossible.
This though does not follow logically. I have been able to see the exact drive with the same sku number offered as new or excellent condition more than 1/2 dozen times in the past few weeks so I guess drive can be acquired and tested before any such swap. If drives are not the culprit , I figure after a swap with a new enclosure and everything other than drives, the thing should not even be noticed and all should work as they did before the accident. If the drives are the cause , then the thing has been on 1/2 hour after the accident so the swap should not do any more damage or cause future recovery attempts any more issues than already might be there.
Any sound advice is greatly appreciated.

Answer 1

I tried the two good disks in the main chasis with new cables and power supply , and I could not get them to come on or show.
I put the good disks back  in the second chasis with new cable and power suppy and it again shows ( prompts telling you that it sees a readable MAc OS disk and asks if you want to Initialize it ).
I put the first set together again with new cable and power supply and the light does not come on anymore . being hearing impaired , i put my head on the drive and hear this clicking sound every one or two seconds. The fan operates . The drive does not show when rebooting and it does not show on the disk utility. The drive does not smoke but smell of burned mica ( circuitry ) is still in my throat after a couple of hours.
From what I have learned the possibility exists that each drive is calibrated and the calibration is added to the control board , So like chances are that even if the two original drives are good and connected properly and everything else is good, they might and probably just wont work with a control board of another even exact drive. There are three tables / charts  marked on each drive and specific locations marked on each chart which differ between drives . These I think are from calibrating the drives.
So I guess its data recovery...
Lacie Data Recovery wants $600 ( $300 x  2 drives ) if they recover data without need for a clean room , $3000 ( $1500 x 2 drives )  if there is need for clean room. If they don't recover , you dont pay , if they recover and you do not want to pay, then they just send you the damaged disk ( or perhaps keep it , or smash it then return it to you) .
There are many other data recovery services so I guess a few days to sift through them but I guess the maker reference should be the best way ( I think its actually a sub-company that lacie forwards data recovery to.
Too many factors are involved. One that will such be a secure thing to do or 6 months later  you find out that someone opened 10 accounts under your name , or emptied your bank account ( thats actually not a problem because there is almost never any money in  my bank account) . So security is a concern. I have encountered individuals that make it their business stealing peoples stuff from their disks. Once I even had one Tech guy which was refered to solve a problem I had , copying disks contents right in front of me for absolutely no reason. So I ask him what are you doing, and he says , I am copying everything just to make sure they are safe ( : )  )
Then there is the dalai lama , everything happens for a reason scenario. In which case I guess I have to consider the whole thing as Good Omen. and just forget about it and go on with my life ( maybe I go work in Mc Donalds : )  )
The bottom line is I can't believe that I am such an idiot not to have a proper backup system in place .
Thank you for the links, I will check them out.