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
January 22nd, 2014, 21:05
I went to put my working drive into my new computer, when I went to power it up I smelled smoke and it looks like a chip fried. I haven't seen any reports of this chip burning before and I am curious as to how it happened. Here is the picture of the component that failed. Is it possible this is a head crash? The drive is a 1TB WD black caviar
http://imgur.com/rmoZ5ffHeres what it sounds like
https://www.youtube.com/watch?v=rBnwoYMczTAI replaced the ROM chip tonight and it does the same thing and I need some help!
Thanks!
January 23rd, 2014, 2:01
Aaron87 wrote:I replaced the ROM chip tonight and it does the same thing ...
The damage to the SMOOTH chip is the side that provides the negative supply for the preamp, in which case the condition of the preamp would be suspect.
Can you measure the resistances of R67 and D3?
http://www.users.on.net/~fzabkar/HDD/bi ... diodes.jpgIf these are damaged, then this would point to an overvoltage on the 5V supply, in which case your PSU would have been the culprit.
January 23rd, 2014, 10:52
I will check when I am home this evening. Until then, do you think the clicking is due to mechanical failure or firmware/board incompatibility? I noticed the sdram chips are made by two different manufacturers too. Or does this sound like a cheap enough fix to send out for repairs?
January 23rd, 2014, 20:05
D3 measures 12.9K ohms and it looks like R67 is open or based on your post
here, it looks like my multimeter doesn't read low enough.
This is what I purchased, everything looks to be the same. Like I said the only difference I can tell is the new PCB is a samsung SDRAM and the burnt one is made by Hynix.
Is there anyway of testing the preamp without professional tools? If it is the preamp, what would it roughly cost to retreive my data (I know its dependent on several things, but a ballpark?)
To be clear - I hooked up my solidstate but it wouldn't boot on my new installation (i had dual boot config and thought maybe my boot files were on the now dead drive). I swapped the drives without touching anything but the power cable and sata cable and it fried on the next power up.
Thanks again for all the help! I really appreciate you guys taking the time to work through this with me.
January 25th, 2014, 13:57
Can anyone provide some input? I keep seeing things about western digitals being difficult to perform head swaps on because of geometry issues.
January 25th, 2014, 22:48
January 26th, 2014, 0:44
LabTech, not sure what I'm looking for in that thread? My drive spins up, clicks several times and then stops spinning. I noticed the DCMs were different from the drive I purchased and the drive that burned. Should this be one of the reason for it clicking (I assuming its looking for data several times before giving up).
January 26th, 2014, 1:03
Guess I can't edit my post... On my board the bar code sticker patient PCB is 2061-771640-H03 AB, the donor is 2061-771640-H03 ABD1. And the board rev on the patient is 2060-771640-003 REV A and the donor is 2060-771640-003 REV P1. Do you think the differences in these revs can be an issue? I can't seem to find that matches both codes exactly.
January 26th, 2014, 14:25
In the link I suggested, there is a question "what happens when such and such...?" The answer may provide some insight about preamp concern.
January 26th, 2014, 22:37
Are the two EEPROM chips the same size?
January 27th, 2014, 10:53
Be careful! It may be a problem with your power supply in your computer that fried it. I once had a PS go bad (just on one molex) and I fried two new hard drives just like that in about a 10 min period. (Fortunately I run a data recovery business, so it just cost me a couple pcb's). Just be sure to check your voltages after you fix the drive.
January 27th, 2014, 23:52
Only thing I can think of was a bad cable, but the computer has 2 drives and is working fine. I think at this point it's time for professional help.
March 29th, 2014, 23:22
Spildit wrote:Aaron87 wrote:Only thing I can think of was a bad cable, but the computer has 2 drives and is working fine. I think at this point it's time for professional help.
As I already mentioned, i suspect the pre-amp is toasted to, so pro help from expert with a clean room and lots of experience is the only way if you really need the data inside the drive.
This will not be a Do-It-Yourself task.
So I sent the drive off to a company and they ordered new parts and rebuilt the head. The drive is being shipped back to me because they said they have tried everything they could and couldn't get the drive to read. They said didn't see any visual damage to the platters either. So where do I go from here? A coworker thinks maybe when it fried, it might have written garbage to the drive and now it doesn't know where to look for data. Is it possible to repair the info?
March 30th, 2014, 1:19
Hi I hope the wording "rebuilt the head" is not theirs, but your interpretation.
I also hope you got YOUR drive back and it was not damaged more by them.
Getting fried and writing garbage to the drive doesn't happen as often as the accusation is voiced, and I wouldn't be quick to say it. Did the company give any more details? It doesn't sound very informative. Maybe one of the US Pros here might be a good choice for a follow up.
March 30th, 2014, 10:29
HaQue wrote:Hi I hope the wording "rebuilt the head" is not theirs, but your interpretation.
I also hope you got YOUR drive back and it was not damaged more by them.
Getting fried and writing garbage to the drive doesn't happen as often as the accusation is voiced, and I wouldn't be quick to say it. Did the company give any more details? It doesn't sound very informative. Maybe one of the US Pros here might be a good choice for a follow up.
The drive is being shipped so this was just a chat over the phone. The guy I spoke with didn't seem to give me many details. I assume there will be some sort of documentation that explains what they tried. That's my wording, I think they actually replaced the head stack and PCB. I have pictures of my PCB and HDD so if anything got mixed up I will be able to tell. And yes, I hope a professional here can give some advice! I am not entirely convinced that they even know whats wrong.
April 1st, 2014, 8:34
So just an update, I received my drive yesterday and I noticed they didnt change out the PCB that used in my attempt to fix. Is it possible that the PCB is incompatible and that is the reason why its not able to read?
April 1st, 2014, 9:56
What was the report of it being unfixable? Its been mentioned the preamp could be shorted... But I guess always a possibility the PCB is incompatible.
I would suggest a good company before all hope is lost.
April 3rd, 2014, 22:00
Here's the recovery lab said.
The R/W Heads on the drive were replaced, a new PCB was programmed and tried, but these options didn't work either.
I assume replacing the heads would included the preamp as well correct? I tried HDDraw to see if I could see recovery anything, but it gave me an error. I am going to set up a computer tomorrow and try ddrescue to see if I can clone the drive. The drive shows to be 144000 Tb though. Is there any way this might work? I could really use some input from one of those professionals on here.
April 3rd, 2014, 22:36
Just curious: How much did they charge you for the donor heads/drive?
April 3rd, 2014, 22:39
144000 Tb?
Can you upload a CrystalDiskInfo report?
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