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 Post subject: Overvolted Seagate Barracuda st3000dm001
PostPosted: January 24th, 2023, 4:45 
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Joined: January 24th, 2023, 4:33
Posts: 2
Location: United States
I plugged the wrong power cable into my external case. Instead of the 12v, I plugged in my 24v one that looks the same. :(

The drive will not spin up. I tried installing it into an HDD dock, but it does not power on. The dock just flashed its power LED.

Is it possible to replace the PCB without losing the data if that's the issue? Or is there anything to try? I saw on this forum that someone had a similar issue and it looks like he removed his TVS diode and solved the issue that way. But as the post stated he soldered other things I wanted someone to confirm that is a possibility. It was also from 2013, so I wanted to check if that's still the way to go. I also found replacement PCBs for sale, and if that will repair the drive I can go that route too. But I just want to recover the data if at all possible.

The other post I found
(https://forum.hddguru.com/viewtopic.php?f=1&t=26796)

Thanks for any info


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 Post subject: Re: Overvolted Seagate Barracuda st3000dm001
PostPosted: January 24th, 2023, 13:23 
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Joined: September 8th, 2009, 18:21
Posts: 14570
Location: Australia
Follow the instructions in that other thread, but in your case it will be the 12V TVS diode and zero-ohm resistors that are affected.

TVS Diode FAQ:
http://www.hddoracle.com/viewtopic.php?f=100&t=86

You cannot simply replace the PCB. There is an 8-pin "ROM" chip which must be transferred from patient to donor. This chip contains unique, drive specific information.

hdd-parts.com offers a replacement PCB plus ROM transfer for US$50.

"Adaptives" -- why PCB swaps don't work in modern HDDs:
http://www.hddoracle.com/viewtopic.php?f=56&t=2600&p=19090#p19090

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 Post subject: Re: Overvolted Seagate Barracuda st3000dm001
PostPosted: January 24th, 2023, 17:25 
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Joined: January 24th, 2023, 4:33
Posts: 2
Location: United States
Thanks for the reply

So I just remove the 12V TVS diode and the zero-ohm resistors?

Or if I buy a replacement board I take the 8pin ROM off my original board and put it onto my new one? After making sure the new board is an exact match.


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 Post subject: Re: Overvolted Seagate Barracuda st3000dm001
PostPosted: January 24th, 2023, 18:52 
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Location: Australia
LordFrz wrote:
So I just remove the 12V TVS diode and the zero-ohm resistors?

No, test everything first.

If a diode is shorted, remove it.

If the resistors are open, flow a blob of solder over them.

Retest for shorts. If no shorts, then fire up the PCB.

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