I have just registered on this forum because I need some help with my Seagate Barracuda 7200.10, ST3500630AS, 500 GB. The drive was originally built in an Maxtor Shared Storage II NAS. When I came back from summer vacation 2 weeks ago, I switched on the NAS, but the system did not boot.
I have contacted Maxtor service, but they offered only a replacement of the entire unit. Unfortunately, I asked my family to store all their private files on the NAS, because I assumed it’s more save than the build in HDD in a Notebook PC. Consequently, all their photos, MP3-files and documents are stored there.
Anyhow, I decided to open the MSS II and connect the HDD to the standard SATA port of my PC in order to analyse the failure. But already the BIOS cannot recognize the HDD during POST. It sounds like the drive tries to spin-up but fails, retries, fails again, reties, etc. I have recorded a sound clip [.AMR file] with the microphone of my mobile phone. It is attached hereunder. On request, I can send the clip to someone’s email address for better analysis of the phenomenon. The noise sounds more loud than it originally is, because I have put the triveon top of a china bowl.
The PCB looks fine, no burned parts as far as I can see.

My last idea, before sending the drive to DR is to purchase a similar drive and replace the PCB. Before doing so, I would like to get your suggestions, how to avoid send the HDD to DR. Your proposals are very much appreciated. Many thanks in advance for your reply.