Hi,
by accident I connected a wrong powersupply to my HDD and fried the PCB

Modell: ST3320620A
Firmware (FW) 3.AAE
Productnumber (PN) 9BJ04G-305

Mainchip on the PCB: 100404195

PCB number on the small sticker under the barcode: 100406534

Can anybody tell me which characteristics of the PCB or the HDD, that I have to buy, must match in order to replace the fried PCB?

Thanks in advance,

tae

match up the following allso try and get the made in country the same.

example product of china (make sure that the drive is made in the same country)


P/N 9W2084-314 (must be the same)

FIRMWARE 8.01 (must be the same as yours)

turn the drive over and look at the plastic it will say rev 1 or 2

try and match that up too

and you might get lucky with the drive working again.

possible connecting the wrong power lead up your damaged the headstack units
preamp ic-chip

next option platter remover

Thats funny....I just got this drive from a rma exchange.

ST3320620A
9BJ04G-305
3.AAE
DATE 0719-2
SITE CS
CHINA
7200.10

_________________
Buy your friends Toshiba\Hitachi and your enemies Seagate.

Craig: Why the platter remover? Are overvoltage problems causing seized motors these days.

_________________
Buy your friends Toshiba\Hitachi and your enemies Seagate.

Usually you just have to remove the dead TVS unless the damage is more extensive.

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You don't have to backup all of your files, just the ones you want to keep.

I disagree. If suitable PCB cannot be found, or ROM swap can not be performed, a platter swap will still leave you in need of a PCB.

Simply match the model, nothing else, and swap ROM chip.

here an image of the pcb, I am not really sure if that round thing is the TVS. ....thought those are the rectangle ones.
this part (red arrow) is completely fried, all others seem/appear ok.

I just got a disk with the same specs, except for the type of main controller IC. Otherwise the number of the board, FW, PN are the same.
Would this work, or would it not work at all. Disk is still sealed, so, in case there is not a relistic chance to revive my fried HDD, I would not break the seal.

thanks

the TVS is the black square component an inch or two above the part you have highlighted, just to the left of the top right screw hole.

but what is that round part that is fried....guess this board itself cannot be repaired???

Your fried PCB has a code of 100404195, what is the code of this new PCB?

Also, do you have the equipment required for soldering the 8 pin ROM chip over to the donor PCB?

fried PCB No: 100406534 (barcode)
controller chip on this pcb: 100404195

new PCB board No:100406534 (barcode)
controller chip on this pcb: 100408287


do I need to replace the ROM? the FW s identical on both boards!!!

Just swap PCB, you may be pleasantly surprised

post your results here

I exchanged the PCB and the HDD is still not working. It is spinning up, but is not recognized at all.
Here the data again>
HDD:
Modell: ST3320620A
Firmware (FW) 3.AAE
Productnumber (PN) 9BJ04G-305
DateCode: 07155
Site Code TK
Thailand

fried PCB No:
100406534 (barcode)
controller chip on this pcb: 100404195 (ST)

new PCB that also does not work:
100406534 (barcode)
controller chip on this pcb: 100404195 (agere)
taken from HDD with following parameters:
Modell: ST3320620A
Firmware (FW) 3.AAE
Productnumber (PN) 9BJ04G-305
DateCode: 08355
Site Code TK
Thailand

Can anybody please help me. I am desperate, really need the data. Do I still get the wrong PCB. Or what would be the next step. I onlz need the data. Once I got the data, I don't care about the HDD.

Thanks in advance......please help.....

tae

Potentially a wrong controller chip as in ST vs. Agere.

Your new PCB is from a drive that is significantly newer, based on its datecode.

Matching PCBs can be a pain.

Then again, you may have the right PCB, as the disk spins up, but you may have other damage. Wrong ROM, damaged firmware, damaged preamp/heads. Those are listed in order from bad to worse in terms of costs to recover and require specialized software and knowledge to correct.

Did you move the ROM like everyone said?

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You don't have to backup all of your files, just the ones you want to keep.

well, I did not yet. I did not want to take of the ROM af a working PCB and put it on the PCB, without knowing if that is really the problem. Again, with the fried PCB the HDD is not even spinning up, with the "wrong" on the HDD is spinning up, but not being recognized by the OS whatsoever, not even as any USB device.
Anybody an idea, is it the wring chip on the PCB?? Thanks again

Send it to a pro its not a job for u !!

Agreed. You have done as much as you possibly can without specialised tools and skills. At this point if data is valuable send to a pro.

Yes, send it to a pro. Or, buy another broken drive, and you'll have unique bookends.

I'd still try an ST chipped PCB with an identical firmware release. That would take the ROM out of equation. No real risk other than the $40 or whatever that PCB will cost.

Too close to simply give up.