I am looking for a PCB for a Seagate ST31000340AS with FW SD35. If anyone has one or knows where to get one I would really appreciate it.

hello,
i have it. please send PIC of your PCB to me by email. my email is sunnydreamspace@hotmail.com. thanks.

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You do realise that this won't work straight off? No matter how close a match you get?

You WILL have to transfer the ROM info from your duff PCB (assuming it's the PCB at fault). This is fact.

What are the symptoms of your problem?

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pcimage,
I am confused why this will not work. I have seen on several other sites that people have used a PCB from another drive and were able to get the drive to work as long as the firmware matched. I am still a novice at this and am trying to learn as I go along. So, any detailed info you can supply would be greatly appreciated. Please understand I am not doubting your post, I am just trying to better understand this.

Thanks!!

On certain older drives (such as Maxtor Calypso, Quantum etc), then yes it would probably work.

But more modern drives have very specific ROM versions on the PCB which must match EXACTLY to the firmware on the drives platters. And many of the new drives have UNIQUE information programmed into the ROM

These new Seagate drives in particular have unique info. In fact if I connect just a 7200.11 PCB alone (i.e. not even connected to the hard drive itself) I can still see the model and serial number of the drive (through the serial connection using specialist equipment), showing that the PCB IS unique.

This was further confirmed by swapping the PCB's from two IDENTICAL drives from a raid 0 (striped) configuration. Neither worked until the ROM was transferred, then both drives worked fine again.

Again, what are the symptoms of your problem? Dead? Clicking? Not seen in BIOS?

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PC Image Data Recovery
http://www.pcimage.co.uk

New!! HDD-PCB.COM for all your PCB and donor HDD requirements!

Thanks pcimage for the info!! The problem with my drive is it is dead. It does not spin up or register in the bios. I had sent the drive in to I386 (Seagate's data recovery company) and they confirmed that the PCB was bad. They wanted $900.00 to recover the data of the drive so I decided to try other areas. Can I switch the ROM chip off my bad PCB onto another matching PCB? Thanks again for all your help!!

yes

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Sean, let him try........sometimes we just need to step aside after we give our opinion.

To antec35 :
let's hope you will not make your drive worst. Any attempt to replace any component of the PCB (which is of course dangerous for some brand and models) is probably the cheapest method you can try. Just want to remind you, if things get worse than it is now, probably DR company will quote more than 900 USD

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cryoborgofthevenus,
Thank you for your input. I realize that what I am doing can have several risks, that is why I am asking so many questions. I have worked in software and hardware installation for well over 10 years and I have very little exposure to data recovery and HD restoration. Again, I am not trying to tell anyone their wrong. In fact, I welcome comments like yours that may be helpful so please don't step aside. I am looking at possibly taking some classes on data recovery to learn more. Thank you for all your help and input.

Antec35