seagate momentus 4200 st93015A pcb swap failed

[ragga_van]

Hi,

I tried to swap logic boards of two identical seagate 30gb HDD, after the swap the hdd does not get detected.

Find below the config. of both the hdd

Hdd with fried logic board :

Model : ST93015A
Pn : 9Y1412-331
HDA PN NO : 100302056
date:04386
HP: 356013-002
fw: 4.07
cfg: nhm-04
ct: 27B39006CQ13LJ

Working HDD

Model : ST93015A
Pn : 9Y1412-331
HDA PN NO : 100302056
date:04353
HP: 356013-002
fw: 4.07
cfg: nhm-03
ct: 27B39006CPY4AR

As far as i can see the cfg no and the batch date are different. Is this the reason as why my logic board swap is not working.

Thanks in advance.

[darkfroce1]

Why did u swap the PCB? What was the problem in hard disk.

DF

[ragga_van]

Why did u swap the PCB? What was the problem in hard disk.

DF

My HDD was making clicking sound and wen i opened the board i found broken chips.

[darkfroce1]

Dear ragga_van

Swaping pcb is good option but it may not work always. Even after changing pcb disk is having same problem it could be
1) head problem.
2) firmware damage.

if data is importent than it is good to take it to a recovery lab.

DF

[ragga_van]

Dear ragga_van

Swaping pcb is good option but it may not work always. Even after changing pcb disk is having same problem it could be
1) head problem.
2) firmware damage.

if data is importent than it is good to take it to a recovery lab.

DF

After changing the pcb, my hdd is not getting recognized, how ever i dont hear any click sounds

Thanks

[darkfroce1]

Could be bearing/ head jam

[rameez]

is the power there in the replace of the new hdd pcb .