Hi everybody

I'm trying to recover data from a Maxtor DiamondMax Plus 8, model: 6K040L0 (PCB: A2GKA).
The drive won't spin up and can not be recognized. It makes a sound that seems like a "BEEBEEP" and after a while a "WRRWRR".
(A behaviour like this youtube video:
http://www.youtube.com/watch?v=YCMCVTa5LYI)
I bought a donor drive, swapped the pcb and unfortunately nothing changed. The orignial pcb, if mounted onto the donor drive makes it spin but not work (some sort of noisy behaviour can me heard).
Donor drive model, pcb and code are same to original drive, some other infos are different.
The same customer has another drive (a WD300) that was mounted into an external enclosure. It turns out that maybe this drive failed first, and an unexperienced person took the Maxtor one from the pc and mounted it into the same enclosure.
The WD300 may be interesting to be repaired, because same data were on there as a backup. The drive spins and at first seems to work correctly but it is slowly recognized and partition manager hangs.
No burnt component on both PCBs.
Any help is REALLY appriciated.