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darioit
 Post subject: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 5:05 
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Joined: June 12th, 2012, 8:47
Posts: 8
Location: Italy
Hello,
If I'm here no good news for my HD

Unfortunately I put 12v in my HD, bacause i swap fan power adaptor molex in chain with my HD

I bought new PCB on web, my question is, may I try to replace it without swap bios? What do you suggest?

Here attached some picture

Thank you in advance


Attachments:
File comment: PCB damaged
d4bd281eb0cd7591c56aa05fb297b238.jpg
d4bd281eb0cd7591c56aa05fb297b238.jpg [ 126.33 KiB | Viewed 6918 times ]
File comment: Molex swap 12v
WhatsApp Image 2016-10-12 at 19.08.17.jpeg
WhatsApp Image 2016-10-12 at 19.08.17.jpeg [ 51.28 KiB | Viewed 6918 times ]
File comment: New PCB
20161005_085122.jpg
20161005_085122.jpg [ 3.77 MiB | Viewed 6918 times ]
File comment: New PCB Bios
20161005_083810.jpg
20161005_083810.jpg [ 3.23 MiB | Viewed 6918 times ]
File comment: PCB Damaged
20161005_085217.jpg
20161005_085217.jpg [ 7.74 MiB | Viewed 6918 times ]
File comment: Bios PCB Damaged
20161005_084640.jpg
20161005_084640.jpg [ 2.72 MiB | Viewed 6918 times ]
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michael chiklis
 Post subject: Re: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 8:12 
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Joined: December 5th, 2011, 5:38
Posts: 1626
Location: Italy
Puoi anche montare la PCB donatrice che hai acquistato sul tuo hdd, ma stai pur certo che non avrai accesso ai dati senza prima effettuare il trasferimento della ROM dalla pcb guasta alla pcb donatrice.
Il punto però è che in genere, quando le pcb WD si bruciano in quel modo (cioè quando si brucia il controller VCM 'Smooth'), si brucia anche il pre-amp delle testine, se è successo ciò allora non avrai accesso ai dati nemmeno dopo aver effettuato il trasferimento della rom.

Una volta montata la pcb donatrice, se il pre-amp è rimasto danneggiato, l'hdd potrebbe non accendersi oppure potrebbe accendersi ma le testine potrebbero ticchettare, questi sintomi in pratica ti daranno al conferma dell'eventuale guasto al pre-amp. In tal caso, l'unico modo per poter recuperare i dati sarebbe quello di affidarsi ad un professionista in recupero dati che provvederà a sostituire il gruppo testine in camera bianca.

Ciao.

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colanco
 Post subject: Re: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 13:07 
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Joined: December 6th, 2012, 8:49
Posts: 290
Location: españa
The side where the IC is burned, it is not a good sign.

It may be that the preamplifier is damaged.
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data-medics
 Post subject: Re: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 16:34 
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Joined: April 3rd, 2011, 0:19
Posts: 2003
Location: Providence, RI
colanco wrote:
The side where the IC is burned, it is not a good sign.

It may be that the preamplifier is damaged.


That's not the IC, that's the motor controller that's cooked. It's definitely worth trying to replace the PCB first before assuming anything is wrong with the preamp.

Unfortunately, you will need to transfer the U12. It's extremely unlikely that just cold swapping the PCB will work. I've only ever seen this work a few times out the dozen or so PCB replacements I do each week.

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fzabkar
 Post subject: Re: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 16:39 
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Joined: September 8th, 2009, 18:21
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data-medics wrote:
That's not the IC, that's the motor controller that's cooked.

IC = Integrated Circuit.

The Motor Controller is an Integrated Circuit.

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fzabkar
 Post subject: Re: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 16:42 
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darioit wrote:
Unfortunately I put 12v in my HD, bacause i swap fan power adaptor molex in chain with my HD

Catastrophic failures in Western Digital PCBs:
http://www.hddoracle.com/viewtopic.php? ... 119&p=5033

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data-medics
 Post subject: Re: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 17:05 
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fzabkar wrote:
data-medics wrote:
That's not the IC, that's the motor controller that's cooked.

IC = Integrated Circuit.

The Motor Controller is an Integrated Circuit.


Yes, technically that's true. But, usually on this forum when people say IC they are referring to the main IC chip on the PCB not the motor controller chip.

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Last edited by data-medics on October 17th, 2016, 17:07, edited 1 time in total.

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fzabkar
 Post subject: Re: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 17:07 
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Location: Australia
data-medics wrote:
fzabkar wrote:
data-medics wrote:
That's not the IC, that's the motor controller that's cooked.

IC = Integrated Circuit.

The Motor Controller is an Integrated Circuit.


Yes, technically that's true. But, usually on this forum when people say IC they are referring to the main IC chip on the PCB.

I don't think so.

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colanco
 Post subject: Re: WD Replace PCB 2060-771698-002 REV P1 - WD20EARS
PostPosted: October 17th, 2016, 20:45 
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Joined: December 6th, 2012, 8:49
Posts: 290
Location: españa
data-medics wrote:
colanco wrote:
The side where the IC is burned, it is not a good sign.

It may be that the preamplifier is damaged.


That's not the IC, that's the motor controller that's cooked. It's definitely worth trying to replace the PCB first before assuming anything is wrong with the preamp.

Unfortunately, you will need to transfer the U12. It's extremely unlikely that just cold swapping the PCB will work. I've only ever seen this work a few times out the dozen or so PCB replacements I do each week.


I think it's a way to write less text, "IC" is shorter than "motor controller" and I think most people on the forum, understood that "IC" was talking about.
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