Barracuda XT, Barracuda, Barracuda Green, DiamondMax and other desktop SATA and IDE drives

[Happy Smiley]

Hello!

Sadly, the controller of my Seagate hard drive is broken (A chip is cracked, I can actually see it). I would like to buy another hard drive that's exactly the same kind, so I can replace the controller and retreive the data, but I can't find them in my country at all! I can buy the controller on EBay, but I prefer to purchase it here, to save the delivery time (1 month!) and to support the local resellers.

My question is -
Is there any other Seagate hard drive with a controller that will work on my drive? I can buy a drive that is available in my country, retrieve the data and then use the new one I bought.

My hard drive is:
Seagate 7200.10 320GB SATA
Model number: ST3320620AS
P/N: 9BJ14G-308
Firmware: 3.AAK
Site Code: SU
Capacity: 320GB
Main Chip #: 100436228

[fzabkar]

You may need to transplant the 8-pin serial EEPROM chip from patient to donor, even for boards from the same model. This is because the EEPROM stores calibration data determined at the factory.

The following article will help you identify the components:

http://hddscan.com/doc/HDD_from_inside.html

If your PCB is similar to the one in the following photo (1.8MB), can you tell us which chip has failed?

http://img239.imageshack.us/img239/6554/img3434a.jpg

Can you tell us how your drive was damaged?

BTW, the EEPROM in the photo is the Atmel device in the top RH corner, part number 25F512AN.

[Happy Smiley]

Thank you so much for the help!

This is a picture of the PCB, the chipped TVS is circled in red on the top left of the pic.

 http://www.rhps.co.il/admin_goods/HDD.jpg

From what I read in the Manuel you linked, the TVS diode must've burned from a power surge, though I don't know how that happened. None of my hardware was damaged, and I'm using some old HDD I found for the time being and it works fine, so this can't be a permanent power supplier's problem, can it?

I'll look into this as soon as possible, but can I simply replace the TVS? Are they transferable? They should be, they're just diodes, aren't they?

I'm pretty good with the solder.

All I need is to get just two hours of work from the HDD. I'll take whatever I need and buy a new one.

And if I need to replace the entire PCB (and the EEPROM chip), is there any other HDDI can use instead?This model, like I said, doesn't exist in my country anymore and I wish to find a way to save me from the month and half of delivery time from EBay.

[fzabkar · Accepted solution]

That looks like the 5V TVS diode. It can be replaced with an SMAJ5.0A from Farnell, Mouser, or Digikey. A 12V TVS diode can be subbed with an SMBJ12A.

I would first confirm that the diode is short circuited by testing it on the 200 ohms range of a multimeter. Test the 12V diode to the left of it as well. A DMM should cost less than US$10.

If you can trust your power supply, then all you need to do is to desolder the diode or snip it out with side cutters. The drive will function perfectly well without it, albeit without protection on the affected supply rail.

I can't answer your questoin regarding PCB compatibility between models. You could ask the data recovery professionals at the HDD Guru forum:

http://forum.hddguru.com/hard-disk-drives-data-recovery-and-repair-f1.html

[Happy Smiley]

Thanks A LOT!

I'm not trusting my PSU, it's a little old anyways. I'll buy a new one and let you know how it went.

[solution]

hi,

here have guid for that. http://www.gotbackdata.com/Article-PCB%20replacement.html