Hello

I am new to this forum, I have been reading and looking for a solution to my problem. Which is a dead st360021a, it started with a power surge that fried the power supply, that was hooked to a UPS? after replacing the power supply the pc would not start or post, after finding the hard drive was the problem it was replaced and pc is fine. I want the data off the non working drive. If I
plug the drive into any pc it will not power up. So I figure the logic board is shorted. I bought a drive off E-Bay. Same drive but different firmware I swapped logic boards, now the drive spins up but isn't recognised by the bios. What would be the best way to get the drive working? I don't want to send it out for repair I prefer to do things myself.
1:Try and upgrade firmware of different logic board to the version I need, or will that even work? I read something about serial numbers not matching.
2. Try to repair short circuit on original logic board.
3: Swith the rom chip from old logic board to the one I bought.
Any feedback would be greatly appreciated.
Thanks

pm sent
pepe

Thanks pepe. I followed your advice and drive works, got my data saved to a new drive.
Thanks again greatly appreciated.

replace the pcb of the same model and also the firmware should be same.
it is very important that the firmware shoud be same drive will not

go ahead and get data

DF

Hi,

I also have short circuit on my printed circuit. I found out which part it is, but I don't know what it is?!?! On my opinion it is a "Zenner" diode (it is positioned by the power connector), but I'm not sure. Does anybody have printed circuit layout. I need to know how can I replace my broken part?

Hi. I have exactly the same ST360021A problem as "nobug" here:
I have a blown PCB firmware 3.19 and I can get disks spinning with a firmware 3.75 board but no data access. Is there any way to get this going without searching the planet for an identical PCB?

I have many seagate hdd with the same problem please help or pm me if u have solution .
Thanks in advance .

try to change firmware rom.....

By flashing or by physically changing it .
If there is some physical changing to do please give some pictures .