Seagate ST3120023A - PCB / Firmware / Power Problems

[scarm]

Seagate ST3120023A P/N:9w4001-301 firmware 3.33
The drive will not spin up (something on the PCB is bad - I know this because I put a different PCB on the drive and it spins)

However - I could not find an exact match on the PCB so I bought one that was close - it's from the following drive
Seagate ST3120023A P/N:9w4001-001 firmware 3.30

Put the new PCB on the drive - it spins up - but nothing is recognized -

There was a western digital in the same pc that experienced the same issue - I switched the PCB and all the data was recoverable...

I'm guessing there is something I can do to fix the power interruption issue with the existing PCB or a way to make the firmware (or whatever it is) the same on the functioning pcb.

I really don't know crap about the workings of a hard drive - but I can solder and operate a pc...

Please Help

[pepe]

1. get a pcb with the same FW.
2. replace ROM from bad PCB to the good ( if there is one)
3. repair the bad PCB.
4. if neither works for you, or u are not confident in doing the above, get it to a pro

pepe

[pcimage]

Post a pic of the PCB and we'l show you which chip to change over.

[networkpc3000]

hi,
here is ref pic. your PCB may be shape close as this one. and ROM chip model most is:25XXXX

Attachments

ROM.JPG (37.04 KiB) Viewed 7953 times

[pcimage]

The man is right, that's the chip.

If the PCB has the same main chip and you move the ROM over, then the PCB will work.

Assuming the PCB is the only problem, of course.

[scarm]

Here is a pic of the BadPCB - it's a little different than the one posted....

Bad PCB

[dick]

In your photo why is the component close to the left hand top corner out of position? What has been going on?

Also you don't need 2 threads on the same topic so you could post a message in the other and direct peeps to this one.

[hddmania]

1 item in the picture looks funny... Did you try to remove it on your own?????

[scarm]

nope - I have not attempted to do any work on the PCB - I see what you mean - that one chip is crooked

[scarm]

anybody have any thoughts on this....

Can I fix the bad board or does anybody know where I can buy a new PCB for this?

[fistron]

I see the diode that is crooked and I think the factory's QA would have let this out. (It is a Seagate after all)

The ROM is probably the 8 pin chip "southwest" of the crooked diode. Can't read the marks in the photo, so double check. The other 8 pin chip - on the right - is obviously not a ROM.

[networkpc3000]

hi,
here you are.

Attachments

BadPCB.jpg (156.65 KiB) Viewed 7633 times