Hi,

currently I have a ST3000DM001 on my table. The drive gave me the Servo Fail errors:



So I took a donor drive and swaped the heads. In a clean room, using the ramps from HDDSurgery. But even with the new heads, I get the same error messages. Is there any trick to make the drive work?

I attached the image of the label from the patient drive (left) and the donor (right).

Hi,

have you checked patients heads under the microscope, were they clean? Have you checked the filters, were they clean? Any platter damage visible?

You might try turning off heads in ROM, but I would examine heads first if they are dirty you have a media damage and this will kill your new heads fast.

Kind regards,
pcn

One more thing: DOM differs by one year.

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030 Datenrettung Berlin GmbH (Germany)
HDD, SSD, NAS, RAID Datenrettung - 030-datenrettung.de

Was the drive clicking and spinning down when it first came in?

These are notorious for media damage. As said above, examine original heads under a microscope, if damage is seen then physically remove the donor head from this side in question from the equation.

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Death is nothing, but to live defeated and inglorious is to die daily.
Data Recovery Cape Town

Hi,

when the drive came in, it wasn't spinning at all. The client said, that the drive was dropped but wasn't on power, when it fell. I swaped the Diodes, but had no luck. So I took another PCB from a ST3000DM001 and put the ROM-Chip from the patient drive onto this PCB. After it, the drive was spinning, but I got the SERVO Errors.

The drive was clicking and spinning down. But it was not the typical loud clicking, but a silent one.
The filter of the drive was clean and I couldn't see anything under the microscope.

Hi,
Please transfer head adaptives from donor rom to patient and try .Inspect the heads under microscope with 20x or 30x magnification

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Regards
Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com