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WD PCBs without rom chip .... what is the solution???

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Ahmed_Samy

Post subject: WD PCBs without rom chip .... what is the solution???

Posted: March 13th, 2009, 12:02

Joined: October 19th, 2007, 0:30
Posts: 65
Location: Egypt

Hello all ,

We all know that the recent models of WD Hdds come without Rom Chip on the PCB so when you replace the damaged PCB with a new one it makes the spindle motor run but when you connect the drive to the Computer it will not detected.

i hear that they merge the rom chip with the microcontroller .... is it right ?

how can i solve this problem???

Best Regards
Ahmed Samy

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Ahmed Samy
Al-Ahram for computer services
http://www.alahram-group.com

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Russwinters

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 13th, 2009, 12:11

Joined: July 16th, 2008, 17:52
Posts: 489
Location: Long Beach, California

Your clue is: Headmap

Best regards,

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Ahmed_Samy

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 13th, 2009, 12:17

Joined: October 19th, 2007, 0:30
Posts: 65
Location: Egypt

thanks for reply ... but if you please could you provide me with more details?

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Ahmed Samy
Al-Ahram for computer services
http://www.alahram-group.com

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harddrivespecialist

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 13th, 2009, 12:17

Joined: January 15th, 2008, 11:06
Posts: 1419
Location: Providence, RI. Boston, MA USA

You have to know how to read and write Microcode.

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www.datarecoveryne.com

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msurgeon

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 13th, 2009, 12:31

Joined: August 14th, 2008, 10:39
Posts: 257
Location: Morris Plains, New Jersey

More than headmap is involved. Masked ROM in MCU contains adaptive data as well. This must be transferred to new PCB. Specialized equipment is required. Professional help needed if data is critical.

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rameez

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 13th, 2009, 15:44

Joined: June 27th, 2006, 11:33
Posts: 2288
Location: In ur HDD !

Or you can change the whole MCU to the new pcb .

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BlackST

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 13th, 2009, 16:10

Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY

... assuming the MCU is not fried.

To do the job are required :

BGA REWORK STATION (Infrared)
Flux (gel, liquid)
Reballing kit (stencil, flux, balls) to be used with IR rework station
As option : SMD solder cream.

IR means INFRARED.

Ah yes, of course... required to know how to do it.

P.S. before someone says something.. er.. uh... silly : this is the safest equipment to be used for such work. If you have seen youtube videos where hairdryer, oven, frying pans and eventually napalm are used for removing and resoldering a BGA chip, ASK the author of the video to help you. If you can.

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Ahmed_Samy

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 14th, 2009, 11:15

Joined: October 19th, 2007, 0:30
Posts: 65
Location: Egypt

thank you all for your positive cooperation ... if anybody discover anything concerns this topic .. it will be a pleasure to share us with his knowledge.

Best Regards
Ahmed Samy

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Ahmed Samy
Al-Ahram for computer services
http://www.alahram-group.com

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rameez

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 15th, 2009, 6:25

Joined: June 27th, 2006, 11:33
Posts: 2288
Location: In ur HDD !

Or you can rewrite the new pcb with pc3k UDMA . UDMA supports operations of rom with these drive these drives also have backup of rom on platters .

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HDD Spaz

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 16th, 2009, 8:39

Joined: October 13th, 2008, 7:29
Posts: 1493

SD's HDD Dcotor for Western Digital has ability to rebuild rom using non native pcb. Havent tested it yet though.

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BlackST

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 16th, 2009, 16:10

Joined: July 18th, 2006, 3:05
Posts: 7476
Location: ITALY

The problem at present, without combo tools like SD / ACE is not read the rom... is write the rom (I mean the Marvell MCU...)

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pcimage

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 17th, 2009, 4:28

Joined: November 29th, 2006, 10:08
Posts: 7865
Location: UK

HDD Spaz wrote:

SD's HDD Dcotor for Western Digital has ability to rebuild rom using non native pcb. Havent tested it yet though.

It does work, I tried it on a 1Tb ROYL drive. Needs to be same family drive, then it works a treat!

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PC Image Data Recovery
http://www.pcimage.co.uk

New!! HDD-PCB.COM for all your PCB and donor HDD requirements!

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Creator

Post subject: Re: WD PCBs without rom chip .... what is the solution???

Posted: March 17th, 2009, 4:36

Joined: December 12th, 2008, 17:00
Posts: 181
Location: Cook islands

PC-3000 UDMA has a perfect function for ROYL's (Marvel without ext.rom) - ROM Recovery. You should find compatible PCB and just write inside it ROM from SA on the platters.

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This user was found to be affiliated with Ace Lab/PC-3000. See this topic for details.

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