Identifying firmware chip

[Kalemaroni]

Can anyone be so kind as to tell me which is the firmware chip on this board (ST2000LM007)?

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ST2000LM007 PCB

[Doomer]

between the TVS diode and the DDR memory chip

[Nick_CT]

This little guy here?

[Doomer]

that's the one

[Nick_CT]

Thanks for that.

What is the world coming to...

[pcimage]

And they are pigs to switch to a good PCB, if you're not a soldering wizard anyway!

Did one today, very fiddly!!

[Nick_CT]

Does the usual heatgun lift it and move it not work?

Maybe I'll fiddle with one tomorrow for giggles.

[Kalemaroni]

Thanks very much Had email notifications turned off for some reason and forgot I'd posted here so sorry for the late response as I've only just read your replies.

[Amarbir[CDR-Labs]]

Wow ,
PCimage and Nick_CT This Is Just Like a Glass Crystal ,Got One for The First Time Today Man Everything is Locked In These HDD's .Coding Is 25S81 In My Rom

[ledomeni]

Now I was in doubt, is this the ROM chip or is it just a glass crystal

[pcimage]

It is the ROM chip, I have changed them before... It s not easy!

[nanoic]

Has anyone succeeded in exchanging this pcb for hdd data recovery? It seems swapping this little crystal ROM isn't enough to unlock the board. Does main controller IC need be swapped as well? Coding in my Rom is 25S81 Thanks.

[Masterclass]

It seems swapping this little crystal ROM isn't enough to unlock the board

What do you mean?

[nanoic]

With the original pcb, the hdd spins but can't be found by computer. After swapping the bios, the hdd even can't spin. It seems there is an bios in main controller too.

[pcimage]

With the original pcb, the hdd spins but can't be found by computer. After swapping the bios, the hdd even can't spin. It seems there is an bios in main controller too.

If the HDD spins OK with original PCB what makes you think the PCB is faulty?

[nanoic]

That chance is low as I’m a chip designer and know how to handle this. Also the donor board can spin the hard drive with its own ROM but not the ROM from the original board. That make me think the MCU might have a portion of ROM as well. Both need be matched.

[nanoic]

I found the Marvell hdd controller becomes very hot in original board. That makes me think the board has a damaged chip although the motor can still spin.

[nanoic]

Yes, same board, REV, FW, everything, even ROM footprint.

[Doomer]

What's the drive's model?
Is it Firecuda?

[nanoic]

Seagate ST2000LM007 2TB

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