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 Post subject: New and interesting DIY-Fail
PostPosted: October 27th, 2010, 11:16 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
Got in a WD800JD that had previously been taken to a local computer shop. It has a badly burned PCB (Combo chip and MCU are burned, as well as various other bits). The shop tried to replace the PCB and was not successful (they reported it would spin up and click).

Interestingly, some smoke got inside the drive chassis; smoke settled on the platter and then the other shop turned on the drive and heads travelled across the particles creating a bunch of nice new media damage.

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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 27th, 2010, 11:22 
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Joined: May 7th, 2010, 13:20
Posts: 595
Location: United Kindgom
Smoke got inside the hdd? That thing must have been burning mental like! for quite a while.
Got any pics of actual damage on platters? :D

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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 27th, 2010, 11:41 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
Already closed it back up, sorry.

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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 27th, 2010, 11:46 
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Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY
(Serious mode ON) : the smoke inside the HDA may be from preamp chip / flex / VCM or from the motor, instead of coming from outside to inside. Did you check HDA internals for the possible source of "pollution" ?

(Serious mode OFF : ) And now an EVERGREEN from THE PLATTERS (oh what a nice name for a group !) : SMOKE GETS IN YOUR EYES...

:serenade:

They asked me how I knew
my know-how was true
Oh, I of course replied
Something here inside cannot be denied

They said someday you'll find
All who ask are blind
Oh, when your drive's on fire
You must realize
Smoke gets in your eyes

So I chaffed them and I gaily laughed
To think they could doubt my advice
Yet today your data has flown away
You're without your porn

Now laughing guys deride
Tears you can not hide
Oh, so we smile and say
When a hard drive dies
Smoke gets in your eyes
Smoke gets in your eyes


:mrgreen:


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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 27th, 2010, 11:48 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
BlackST wrote:
(Serious mode ON) : the smoke inside the HDA may be from preamp chip / flex / VCM or from the motor, instead of coming from outside to inside. Did you check HDA internals for the possible source of "pollution" ?

Didn't take the time to take everything all apart... if the client approves recovery the heads will be replaced anyway since they have been running over smoke bits for who knows how long. There was no visible damage to the preamp or flex cable.

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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 28th, 2010, 4:18 
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Joined: November 9th, 2006, 15:15
Posts: 2984
BlackST wrote:
(Serious mode ON) : the smoke inside the HDA may be from preamp chip / flex / VCM or from the motor, instead of coming from outside to inside. Did you check HDA internals for the possible source of "pollution" ?

(Serious mode OFF : ) And now an EVERGREEN from THE PLATTERS (oh what a nice name for a group !) : SMOKE GETS IN YOUR EYES...

:serenade:

They asked me how I knew
my know-how was true
Oh, I of course replied
Something here inside cannot be denied

They said someday you'll find
All who ask are blind
Oh, when your drive's on fire
You must realize
Smoke gets in your eyes

So I chaffed them and I gaily laughed
To think they could doubt my advice
Yet today your data has flown away
You're without your porn

Now laughing guys deride
Tears you can not hide
Oh, so we smile and say
When a hard drive dies
Smoke gets in your eyes
Smoke gets in your eyes


:mrgreen:



I think I prefer 'Serious mode off' :lol:


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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 28th, 2010, 5:18 
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Joined: August 8th, 2007, 6:32
Posts: 1238
Location: inside ROM
I remember that top hit song :D

BlackST wrote:
(Serious mode ON) : the smoke inside the HDA may be from preamp chip / flex / VCM or from the motor, instead of coming from outside to inside. Did you check HDA internals for the possible source of "pollution" ?

(Serious mode OFF : ) And now an EVERGREEN from THE PLATTERS (oh what a nice name for a group !) : SMOKE GETS IN YOUR EYES...

:serenade:

They asked me how I knew
my know-how was true
Oh, I of course replied
Something here inside cannot be denied

They said someday you'll find
All who ask are blind
Oh, when your drive's on fire
You must realize
Smoke gets in your eyes

So I chaffed them and I gaily laughed
To think they could doubt my advice
Yet today your data has flown away
You're without your porn

Now laughing guys deride
Tears you can not hide
Oh, so we smile and say
When a hard drive dies
Smoke gets in your eyes
Smoke gets in your eyes


:mrgreen:


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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 30th, 2010, 15:03 
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Joined: March 28th, 2008, 7:52
Posts: 1466
Location: Europe, Hungary
drc wrote:
Got in a WD800JD that had previously been taken to a local computer shop. It has a badly burned PCB (Combo chip and MCU are burned, as well as various other bits). The shop tried to replace the PCB and was not successful (they reported it would spin up and click).

Interestingly, some smoke got inside the drive chassis; smoke settled on the platter and then the other shop turned on the drive and heads travelled across the particles creating a bunch of nice new media damage.


This is not too interesting, and maybe not DIY-related. (only the scratch)
Preamp can be burned together with the original PCB.

I have seen burned motor (VC and spindler too), preamp-cable (flexible), preamp itself too.

Janos


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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 30th, 2010, 17:49 
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Joined: May 5th, 2004, 20:06
Posts: 2782
Location: England
maybe the other shops recovery pro had a serious smoking problem?

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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 31st, 2010, 17:22 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
Well, I mainly thought it would be interesting for the people here who are always running drives after cutting off TVS or swapping burned PCBs, etc

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 Post subject: Re: New and interesting DIY-Fail
PostPosted: October 31st, 2010, 17:59 
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Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY
@drc,

how many threads are real and how many are BOGUS ? I have an idea about the BOGUS percentile and is very high.... if you want a method to discriminate BOGUS threads without checking the IP/HOST NAME, I have one that is almost failsafe. And free :mrgreen:


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