Hey, I have a WD800BB - 00DKAO that fails to power on upon boot, and it is not recognized by the BIOS. To my understanding this requires a PCB swap, correct? Well, I did some research and found that I need to replace the current PCB with one of a similar model number. The problem is that the number on the white sticker below the IDE is slightly different from the one printed on the bottom of PCB itself. White sticker = 2061 001159 100 E / Bottom of PCB = 2060 001159 006. What one would I use as a reference when finding a replacement (White sticker # or Bottom of PCB) ?

Also, what is of most significance when replacing a PCB: matching PCB #, hard drive model (WD800BB - 00DKAO), date of manufacture (11 APR 2003), or the DCM # (HSBACAJAA). I noticed that one PCB supplier only tries to match the DCM #'s as best as possible, so they could slightly differentiate- is this the best method?

Thank you guys!

Does the drive spin up? If so, then a PCB fault is unlikely, although still possible.

In any case, a straight board swap won't work. You need to transfer the 8-pin flash memory chip at U12 to your donor. This chip stores unique, drive specific information. A ROM transfer service should cost you around US$10 - $20.

_________________
A backup a day keeps DR away.

Thank you for the reply.

No, I don't believe the drive spins, because it doesn't emit any vibration or sound when connected to the PSU.

I found a replacement PCB on ebay that has the same P/N has my current one. (2060-001159-006 REV A)

A ROM transfer is basically re-soldering the u12 chip, correct? Simply remove the existing u12 ROM chip on the replacement PCB and replace it with the one on my current PCB? I read that this may not always be necessary, is this true? Even it is, I think I may be able to handle the task without burning down the house.

Will this do the trick?

http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 63611#shId

If you have anymore recommendations please do share.

Thanks for the help!

Update:

I found a site that sells the PCB I need. They said they will send me two PCB's and one of them will work without the U12 ROM swap. Is this true?

This is what they say:



I thought the U12 ROM swap was always necessary.

Any input would be greatly appreciated.

Thank you.

See http://fo.ioffer.com/i/pcb-board-wester ... -182544731

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A backup a day keeps DR away.

Thank you for the response once again, but I have already found a replacement PCB(same as the one you posted above). I'm simply wondering if what I've been told by the seller is correct. That is, I will recieve two PCB's and one of the two is guaranteed to work without a U12 ROM swap.

Please see previous post for details.

Thank you.

The chance for you match the correct configuration is low, anyway, it is more higher if you have 2 different PCB.
If you have only the phisically compatible pcb, you are at half way, you should move the chip and you are done.*

* if your HDA is error-free of course.

Take care for the soldering, too much temperature or short circuit can kill the ROM chip, and your recovery's price will be doubled!

Good luck.
Janos

Thank you for the information!

Here is a picture of my PCB, I don't see any damage. If my HDD still has no power (disc doesn't spin), is the PCB still the culprit?

Thank you.

The motor connector has a blister which suggests overheating. Examine the underside of the board for any scorch marks in that area. Other than that, there appears to be no visible damage.

I'm still betting on the PCB being the culprit. When you receive a replacement, try it first without a ROM swap. The drive should spin, but it probably won't be detected by BIOS.

_________________
A backup a day keeps DR away.

Oh, you have a good eye!

I connected the HDD to a friends computer and it froze at the BIOS screen stating- "Detecting IDE Drives". I'm assuming this means that the there is power? Even still, the disc doesn't spin...

I will be receiving the replacement PCB in the next 1-2 days, I will report back with the results! Wish me luck guys.

I have received both PCB's. The HDD now has power, but makes a clicking noise and freezes on the bios screen stating "Detecting IDE Drives". I've tried both PCB's that I have received and both have the same result - clicking noise. I believe I need to transfer the U12 ROM chip, but which PCB should I transfer it to?

I will list the details of all PCB's below - Main Controller Chip:

*If you look at the pictures of the two new PCB's below, you'll notice that they have slight physical differences when compared to the old PCB(pictured above). Is this a concern? I have circled the differences for your convenience.

Old PCB:

WD 70C22 GP
00-00 ST 1.3
LP9AU0304 F

New PCB #1:

WD 70C22 GP
00-00 ST 1.3
LP9GA0324 F

New PCB #2:

WD 70C22 GP
00-00 ST 1.3
LP9DV0313 F


Thank you for the help!

Both PCBs should work. Otherwise your drive has 1 defective head or damaged Preamp.
You'll need a pro intervention to retrieve your data.

Good luck

I swapped the U12 chip to one of the new PCB's. At first the HDD would cycle through 10 clicks, and then the disc would power down. This would repeat itself, the cycle of 10 clicks etc. Now all it does is, click once, power down, and repeat. What's likely the problem? Should I try swapping the U12 to the other PCB as well?

Thanks.

I don't think the other board will make any difference.

BTW, the differences in the WD70C22GP MCU chips are probably just batch and YYWW (Year / Week) date codes.

LP9AU0304 LP9GA0324 LP9DV0313

The above numbers suggest that the chips were manufactured during weeks 04, 24, and 13 of 2003.

_________________
A backup a day keeps DR away.