My Hitachi HDS724040KLAT80 (400 GB, IDE) died during copying data from it. After reooting it wasn't found by the mainboard's BIOS. Connected to another PC it showed the same effect. It is not spinning.

I tried to find a used one to exchange the PCB, but I haven't found one with the same Part-No. (0A30228)

So I was a bit careless and got the PCB of my no longer used Hitachi HDS724040KLSA80 (SATA!) with almost the same Part-No. (0A30229) and mounted it on the defective drive.

Result: Drive is spinning again, but not found in BIOS. Also, by reassembling to HDS724040KLSA80, is wasn't found anymore, too.

Is it possible to reanimate the HDS724040KLAT80 with a PCB from a drive with the same Part-No. or should I stop searching for that HDD?

You should better seek professional advice instead. It is very easy to damage or corrupt Hitachi boards with careless 'swaps' without knowing the problem, what to do and tools for reverting eventual change. The ATA drive has to be serviced, the other needs to have the pcb reprogrammed with expensive tools - if not damaged.

Hi,

It the problem would be only the PCB, that could be possible but you would have also to swap some chip(s) that contain some important info, but the issue is that swapping the chips is dangerous for those who doesn't have experience and besides that, the drive can have some other issues after, and you'll be just like before.
So as BlackST said, you should seek professional advice.

Hitachi PCB's CANNOT be swapped directly, they contain UNIQUE info.

Agree with BlackST and dmarques, seek pro advice.

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Too late and too sorry : now there is ONE corrupted PCB (+ drive) and one dead with a potential drive that damages every given attached PCB.
And in this case swapping PCBs with ROMs was not a good idea without checking the HDA of the first drive...
If only people and internet didn't make these things appear so simple....

So, even if I get a suitable PCB for the dead drive and swap the old EEPROM to it, I have no chance to get the drive repaired?

How about the possibility to repair the PCB of the dead HDS724040KLAT80? The diodes D1+2 are OK. I measure voltages allover the board, but the spindlemotor gets only 0.68V at each pin. Maybe a similar drive would help detect the damaged part.

But now, I'm no longer sure, that the PCB is damaged. Is it possible that the drive found a serve error on the platters or heads and cutted off the power supply for the spindle motor and heads?

I attached a picture of the PCB.

Who knows ? It works IF and only IF the content of the EEPROM is OK and IF and only IF there is no "other damage" on the HDA (you'll discover it because when you connect the new PCB it will be killed). I would have the drive checked before buying parts / donors.

If you really want to try, good luck. Maybe it works, maybe it's just a waste of time, decide if it's worth trying. Usually when it's beyond a simple problem it is a TOTAL waste of time if you don't have schematics or the necessary experience on these boards.

1 million $ question without the million $... diagnose with proper tools is certain and relatively easy, without it's just guessing. On some case the spindle doesn't turn on, on other heads don't move, on other the drive stay busy forever depending on the problem.
If you have access to the expensive standard diagnostic complexes used for diagnose you can pinpoint where the problem is and maybe here get some help, otherwise you can only go trial and error.

IF your drive problem is only not spinning or not powering UP, this means some Power Issues
now, if you dono how to diagnose the proper Power Circuit on your original PCB then as they suggested do not waste your time and kill your drive more.

Seek a Pro. and diagnose properly before loosing more

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