I receive hard drive from http://www.caritas.ch/en/home/ The worker of this organization has some personal and office data on the drive. The hdd spin down after few clicks I changes the PCB and bios chip the problem is same now the original PCB is on donor drive running perfectly so no PCB issue at all. I am also data recovery expert now final solution is a head swap I have many successfully head swap case but in most case head scratch the platter I have no solution for that and i think not available in the world the data is critical that's why i am discussing with hdd's guru's.

I will transfer the case if anybody has proper solution for this model.

Thanks

what is the original story from customer, does drive fell down ?
are you sure there are scratches on platter ?
did you swap the heads already ?

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Data Recovery Pakistan

No hang during operation

not sure about the scratches but it come from swiss data recovery company may be scratches happed during training

No i did not heads swap

I just change the PCB and original PCB running perfectly on donnor.

PCB issue on these is rare.

7200.4 series drives are often difficult and tricky to recover. Given your drive's behavior description it would not surprise me to have the typical media damage on surface 0.

The fact that it has already been to another place where it likely went to another batch of torture in addition to that of the owner's original nosiness, I would not be confident daters will be recoverable.

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Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts

bad luck for the customer...

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Data Recovery Pakistan