Need Assistance with PCB Swap Issue

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cabose369

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Aug 18, 2006
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One of my WD Black 1 TB 1001FALS HDD's died. I decided to take off the PCB board on the bottom and discovered that one of the chips blew.

However, I then realized that I have another WD Black 1001FALS HDD manufactured 2 months before the one that blew. I tested that HDD to make sure it worked and it did.

So I swapped the PCB from the working HDD to the HDD that had the blown chip. Viola. The drive works, powers on and spins.

However, Windows does not see the drive and it is not showing up in Device Manager or Disk Management. I currently have it hooked up via SATA to USB.

The PCB codes do not match between the 2 boards. The blown chip PCB is 2060-701622-000 REV P1 and the one that I installed on it now is 2060-701567-000 REV A. I don't know if this helps but I wanted to supply as much info as possible.

Anyone have any ideas how to fix this? I really appreciate the help!
 
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cabose369

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Aug 18, 2006
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Yeah I just did some more research and seem to have come to the same conclusion. So I have found this PCB board that matches the one that I have. After doing some further looking around it might appear that I have to swap over the Main Controller IC in order for the drive to be recognized as well. Can anyone confirm if that will be necessary?
 
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fzabkar

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Sep 22, 2010
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Each WD PCB stores unique, drive specific "adaptive" data in flash memory. Sometimes this memory is in the form of a separate 8-pin chip ("ROM") at location U12, in which case this chip, or its contents, need to transferred from patient to donor. If this location is vacant, then the "adaptives" are embedded within the Marvell MCU. There are ways to rebuild the ROM, but it requires specialist commercial software.

You could purchase a one-month licence for WDMarvel (US$10), but you would then be on your own.
 
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cabose369

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Aug 18, 2006
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Sorry for the delay in posting back.

So I got the PCB in and had someone professionally transplant the Main Controller IC.

Here is the picture with the PCB Board I ordered and the transplanted Main Controller IC:
http://postimg.org/image/ain9m1y45/
http://postimg.org/image/ds1osim7p/
http://postimg.org/image/c1inr14ol/

And here is a picture of the original board with the Main Controller IC removed:
http://postimg.org/image/p34cgvt2t/

So I have now plugged the drive in. It powers up and spools no problem. I plug in my SATA to USB cable and the drive still isn't recognized by Windows. I'm not sure what to do now. Did I miss something?
 
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4745454b

4745454b

Titan
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Apr 29, 2006
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Assuming the guy did it right, the only other thing I can think of to try is to plug it directly into the tower. No USB adapters. That is some really fine soldering that needs to be done. So I'm not sure it's correct. It's also possible that more then just that one chip blew.
 
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cabose369

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Aug 18, 2006
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How can I tell if that is shorted? It looks ok visually

Also, if it was shorted and the preamp on the headstack may be damaged, what would be the next step in trying to recover the data?
 
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