helpme0k wrote:
I asked about where the PCB rev was... this is what hitachi sent me.

Dear Sir:
Thank you for contacting the Hitachi Technical Support Center.
As hard disk drives are not user serviceable items, Hitachi GST does not
offer parts for sale for any reason. Consequently Hitachi does not
recommend or support in any way user servicing of our drive products. For
that we reason we cannot assist you on this matter.
The Hitachi people were very helpful to me on the phone. They are easy to reach and know their products. This is based on contacting several of their reps. All were equally very willing to help me. This is based on using the US phone number.
Call them:
http://www.hitachigst.com/hdd/support/sources/tsc.htmThey were able to help me identify 5 additional part numbers for an identical hard drive, which substantially simplified my search for a donor drive.
My second inquiry was to obtain a list of 3rd party suppliers who could be stocking it. After the disclaimer that these were third-party suppliers and not endorsed by Hitachi GST in any way, I was given a list of 3 such companies. Finding their websites subsequently was a trivial matter.
Here is that information, if you require it:
Cue technologies
800-746-4283
TCB technologies
866-307-2787
Component sourcing group
877-274-7620
You are well advised to contact Hitachi. I suspect your actual PCB is fine, so an exact firmware match may not be required if you simply transplant it to the donor drive chassis if the heads/preamp assembly is the same. Call them up!
The PCB sticker is unique, hence you see the "matrix" barcode on it, but the first two strings from it would denote the PCB revision. You'll find that having a matching MLC will usually mean you got this PCB matched as well, if the drive model and p/n are identical. Note that Hitachi may have more than one identical part number to this drive. They will look up additional part numbers for you.
In practice, if you get the drive from within a couple of months of this one, it will have a matching PCB rev most likely anyway.