Seagate ST39173N 9.1GB Narrow SCSI Drive failure

Hi, Apologies that my first post to this list for a while is one requesting assistance, but my unjustified faith in hard drive technology has bitten me... The Seagate drive in my VAXstation 4000/90 (running OpenVMS 7.3) failed recently and it hadn't been backed up for quite a while. We had a power surge which tripped the main circuit breaker, and when I reset the breaker and turned the box back on the drive failed to spin up. The drive is recognized by the firmware, except that the capacity column shows ... instead of a figure. An LED on the controller circuit board lights a couple of times reinforcing that the drive electronics are talking across the SCSI bus, but as I say the drive refuses to spin up. The box was running a website dedicated to HECNet (it was at http://www.hecnet.eu) using the WASD webserver and was able to report on issues with the network and current HECnet nodes. My (limited) diagnostic skills would point towards a drive motor controller failure, or less likely sticking heads. Given that the drive has been powered down and up on a number of occasions without issue I'm thinking it is probably a controller failure rather than a head problem, but I'm open to alternative opinions. Does anyone have a Seagate ST39173N drive they would be prepared to part with for a reasonable amount of money? At the moment the only drives I can find are in the region of $150 which is more than I can comfortably part with on the off chance that swapping the controller board might give the drive new life. Many thanks for the help. Mark.