Looking for pcb 100466824 rev C; The firmware is SD81. Thank you for any help i can receive; and if more information need ill add.

hi,
i have it in stock. and you no need to find out the same version of your drive. as it a part of FW(include adapter,version info) stock ROM chip. you had to swap it from bad PCB to good PCB. it unique data. please feel free to contact me by email or MSN if need. have nice day.

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data recovery service[/b]

SD81 firmware may be afflicted with the 7200.11 BSY bug. If yours is so affected, then Seagate may still be offering free data recovery.

Otherwise see this thread for an easy DIY fix:
http://forums.seagate.com/t5/ATA-and-Se ... 036#M19464

If you need to purchase a PCB, try the following vendor:
http://www.onepcbsolution.com/

His price is US$40, plus $10 for a ROM transfer, if required.

Otherwise, upload a detailed photo of your PCB and one of us will help you with a DIY repair, if feasible. Often the fault is limited to a shorted TVS diode, in which case there is an easy no-cost DIY fix.

BTW, I am not associated with any supplier.

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A backup a day keeps DR away.

Hi, I have this kinds of working PCB, pls contact my hotmail.

Thanks.
Eric

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Provided HDD PCBs and donor HDD, Real in stock
eric_lee8341@hotmail.com

The issue that i have with the drive is that when plugged to the comp it doesn't let the computer turn on, therefore i assume its the pcb that is fried even though that there is no visible burn on the board.

It appears that your drive has a shorted TVS (transient voltage suppression) diode. It has sacrificed itself by going short circuit in order to protect the rest of the electronics. There will be two TVS diodes, one for the +5V rail, and a second, usually larger one, for the +12V rail. If there is no other damage, the solution is to remove the shorted diode by desoldering it, or by snipping its pins close to its body with flush cutters. Just be sure your PSU is OK, as you will no longer have any overvoltage protection on the affected rail.

If, for continued protection, you wish to replace the diode, then a 5V TVS diode can be substituted with an SMAJ5.0A, and a 12V diode with an SMBJ12A.

They can be ordered from Farnell, Mouser, Digikey.

As for board replacement, generally speaking, a straight board swap will not work for modern drives. This is because each drive has unique calibration data which are stored in a serial EEPROM (flash) chip. When swapping boards, this chip must also be transplanted from patient to donor.

This following URLs should help you identify the components:

http://hddscan.com/doc/HDD_from_inside.html
http://www.users.on.net/~fzabkar/HDD/HDD_ICs.txt
http://www.users.on.net/~fzabkar/HDD/TVS_diodes.txt

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A backup a day keeps DR away.

check diode. good luck

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data recovery service[/b]

I wish I'd said that.

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A backup a day keeps DR away.