Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
April 13th, 2011, 13:49
Doesn't sound like a full calibration noise to me.
April 13th, 2011, 13:53
I heard this sound so many times =) Its a Tornado being a Tornado =)
April 15th, 2011, 23:02
So here are pics of the PCB and foam.. any chance I can fix this myself?

April 16th, 2011, 3:17
drdavidge wrote:The link to the audio clip was delayed before it posted a few posts above - let me know what you guys think and let me know what you think the best course of action is.
I'm not a DR guy, but one thing you could try is to gently shine up the preamp contacts on the PCB with a soft white pencil eraser. Alternatively, you could use a cotton bud to apply a metal polish such as Brasso.
Materials changes mandated by RoHS have caused oxidation problems in both WD and Seagate drives. Hopefully your problem is as simple as a bad connection.
-Franc
April 16th, 2011, 7:02
fzabkar wrote:I'm not a DR guy, but one thing you could try is to gently shine up the preamp contacts on the PCB with a soft white pencil eraser. Alternatively, you could use a cotton bud to apply a metal polish such as Brasso.
Materials changes mandated by RoHS have caused oxidation problems in both WD and Seagate drives. Hopefully your problem is as simple as a bad connection.
-Franc
Does anyone else see oxidized contacts on the picture above?
April 16th, 2011, 8:32
No.
April 16th, 2011, 11:32
It can't hurt to clean the contacts I do it every time I remove a board just SOP I have been able to obtain access to flaky drives by just doing the contacts regardless of appearance. It happens
April 16th, 2011, 17:32
networks wrote:It can't hurt to clean the contacts I do it every time I remove a board just SOP I have been able to obtain access to flaky drives by just doing the contacts regardless of appearance. It happens
Exactly, and that holds true for mainframe boards costing $10K, and having gold, pre-RoHS contacts.
Just because a plated copper pad may appear shiny, this does not mean that the actual contact point is oxide free. I find that this is particularly true of battery contacts which tend to develop black spot oxidation.
The OP has been fortunate in that s/he has been able to receive a proper diagnosis from and experienced and knowledgable forum member. Other, less capable, DR firms may have misquoted several $K for an HDA repair. Perhaps the OP's luck may extend to a simple cleanup.
Good luck, anyway.
April 16th, 2011, 22:13
fzabkar wrote:Other, less capable, DR firms may have misquoted several $K for an HDA repair. Perhaps the OP's luck may extend to a simple cleanup.
Is this a well documented fact or just your opinion?
April 17th, 2011, 7:58
networks wrote:It can't hurt to clean the contacts I do it every time I remove a board just SOP I have been able to obtain access to flaky drives by just doing the contacts regardless of appearance. It happens
It wasn't the contacts, for me, just a coincidence instead. It happens
April 17th, 2011, 15:58
So guys, thanks again for the help so far. I have another working WD5000AAKS-00TMA0 drive here. Would I be doing any damage by swapping the working PCB on the non-working drive and giving it a shot to see if it works, or could that damage both drives?
April 18th, 2011, 9:58
if i am correct in my assumption - u should be fine. Chances of it working are low however.
April 18th, 2011, 23:12
Just tried it.. the bad hd starts up without the spinning down anymore with the good PCB..but it still doesnt get recogized in windows to see the folder list. Too bad.
What's the next step?
April 19th, 2011, 3:48
Get a professional diagnose.
April 19th, 2011, 5:18
drdavidge wrote:Just tried it.. the bad hd starts up without the spinning down anymore with the good PCB..but it still doesnt get recogized in windows to see the folder list. Too bad.
What's the next step?
Find someone who will transfer the original flash contents to your donor PCB.
April 19th, 2011, 5:24
fzabkar wrote:Find someone...
Can you be a little more specific with this "someone"? TV repair shop? Professional?
April 19th, 2011, 5:50
Never heard of TV repair shops (if they still exist beside ASCs that handle mostly warranty only) with PC3000 in their instruments stock...
April 19th, 2011, 6:09
On this series of disk (WD5000AAKS-xxTMA0 & WD5000AAKS-xxYGA0) I've seen plenty where there's an issue with the ROM/controller chip. Disk spins up, becomes ready, as soon as any access is required to the drive it spins down then up again. Can access one LBA value at a time like this. The fix is to find a suitable donor PCB & regenerate the adaptive ROM. If you are lucky you might get a straight swap on the PCB and get full access, I have found this on working on matching drives in a RAID array. But more often than not rebuilding the ROM from the SA module is required. If you don't have suitable equipment for this contact a local data recovery company. You cannot do it yourself.
Regards,
John
April 19th, 2011, 6:22
fzabkar wrote:drdavidge wrote:Just tried it.. the bad hd starts up without the spinning down anymore with the good PCB..but it still doesnt get recogized in windows to see the folder list. Too bad.
What's the next step?
Find someone who will transfer the original flash contents to your donor PCB.
Usually it would cost the same as recover data AND the problem is elsewhere so this idea WON'T WORK.
If you come here with a file and a blank EEPROM /PROM I program a single chip for a small fee, the more you ask (i.e. use of BGA or special adapters or MCUs) the more the price skyrockets as it is obvious to be (except if you ask me to program a stock of all equal pieces for small production). The same happens in every lab I know, maybe the poorest / less developed parts of this world are an exception, but it is impossible to withstand the taxes/costs of THIS side of the world doing things for 5-10$ taxes paid.
April 19th, 2011, 7:46
If there is someone on this forum who is willing to provide this service for a nominal fee, now is a good opportunity to offer your services.
I shy away from this type of contracted service . . . often there are bad sectors or other complications.
It's my experience, after working in repairs for more than 20 years, that the cheapest and "most clever" clients require much more support than the folks who are willing to pay full price to get the job done right.
Life is too short . . .
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