Hello,

I'm in trouble with Samsung HM100UI/Z4 Spinpoint HDD. I've read some posts about this HDD (keyword HM100UI). In my case, the drive came from a Lacie external USB powered box.

The drive stopped rotating after using it in a computer, and before connecting to another one. The fact is that the box was a little bit hotter than usual when I disconnected it from the first computer (the box usually stood cool when using it). There was no other unusual phenomenon to take in account, I think.

I've been looking inside the box and I've seen that the USB-SATA adapter is working properly. So, the PCB is feeded with 5 volts, but the pins that connect the PCB with the HDD itself don't have voltage among them (as the voltmeter said). On the other hand, some of the pins in the PCB that get data from the HDD show voltage. This is why I think the controller of the motor of the magnetic cylinders might be burnt, I mean, an electronic failure.

I wonder if a swap between the old PCB (MT2 S3M Rev.01 R00) and other new PCB of the same HDD model would be enough to rescue the data inside. I'm not sure if some ROM or similar device in the PCB must be reprogrammed before the swap works.

The fact is that in the posts people ask but don't explain if they have been successful with PCB swaps, for example.
http://forum.hddguru.com/samsung-1tb-laptop-drive-how-identify-the-pcb-t19207.html?hilit=hm100ui

Can anybody tell me if a PCB swap could be the way or is there any other part broken?

Thank you for your help and ideas.

I think ROM is damaged. Is common for this series.

PCB swap will not work as donor ROM adaptives will be wrong. Transfer of native ROM will not work as ROM is damaged.

You need a professional assessment of this. It is fairly straightforward process with correct tools and knowledge.

Agree, have seen the many times on this model.

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