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

[NickHunter]

I need a replacement PCB for this drive. The PCB is fried and Ihave had no luck finding a compatible match. 

Please any help anyone can give I would bemore then grateful. 

Also is it passable in any way shape or form to but a replacement from Seagate?

 

[fzabkar]

The component you have circled is a Transient Voltage Suppression diode. If you are absolutely certain that your power supply is OK, then you can desolder this component and the drive should work properly without it. These diodes are intended to go short circuit when subjected to an overvoltage condition. They sacrificially protect the rest of the logic on the PCB. I'm assuming that there are no open copper traces in the vicinity.

If you wish to replace the faulty TVS diode, then this Usenet discussion may help you obtain one:

http://groups.google.com/group/sci.electronics.repair/browse_thread/thread/a5494cd8bb534e29/2667e295ef3040ad#2667e295ef3040ad

[onethirty5]

I also had a problem with a PCB.  I looked for hours for one for my Barracuda drive.

I finally found a place that sells replacement PCB's

Seagate support was useless and telling me that I have to go back to HP to get a PCB for a Seagate Drive!

check out this place to see if they have what you need.

I have not received my replacement yet, but can't hurt to give them a try!

http://onepcbsolution.com/

I will update when I get the part to see if it works for me.

[fzabkar]

If the replacement board doesn't work, or causes your drive to click, then be prepared to swap the serial EEPROM (p/n 25Pxxx) from patient to donor. This IC contains the "adaptive" values that were determined during factory calibration.

[onethirty5]

Great!! thanks for that info.  I should have the new PCB in a few days and i will give it a shot.  I just need to figure out exaclty which part is the eprom that you are speaking about!

thanks!

[fzabkar]

In the photo, the EEPROM appears to be the 8-pin chip at the top RHS of the MCU (the biggest chip). It will probably have a part number beginning with 25P.

See the following article for more info:

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

BTW, what is wrong with your original board?

Message Edited by fzabkar on 02-12-2009 09:33 AM

[onethirty5]

Thanks!! I will give it a shot!  I will let you know how it works out!

Let's say that it got fried, by the incorrect application of POWER!  Smoke and smell came out.  I'm hoping that the EEPROM is not damaged on the orig PCB , cause if it is I am in trouble....

Message Edited by onethirty5 on 12-01-2009 02:35 PM

[onethirty5 · Accepted solution]

Just wanted to let you guys know...

I received the PCB from the link above today.  3 day delivery from CA to NJ is pretty good.

I installed the board and worked like a charm!  I had also contacted the company becuase my drive information did not match EXACTLY to what they had listed, they said that I could try  the board and if it didn't work they had another board that I could try after I returned the wrong one.

I cannot say anything bad about my first experience with onepcbsolution.com

[Thisamenis]

If I understood well, EEPROM is what is refered on the picture as "Flash chip"?

[fzabkar]

Yes, the EEPROM is the flash memory.