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 Post subject: Re: External HDD to SATA fail
PostPosted: September 19th, 2014, 14:19 
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Joined: September 19th, 2014, 14:15
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Location: Portugal
shineshane, had the same problem as you last night!

Were you able to get that exact piece of the controller board? -> 4061-705094-001 Rev AG

Mine is that one too, having a tough time trying to find one on the Internet. How did you manage to get yours working? Did you find this exact controller board or was it one of the others ones? AA, AD? ....


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 Post subject: Re: External HDD to SATA fail
PostPosted: January 18th, 2015, 4:45 
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Joined: January 18th, 2015, 4:21
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Location: Hong Kong
Hello, I have the same problem with My Book Essential 2TB 3.0USB. It suddenly stopped working few days ago. I opened the case and separated the disk and the control board, the disk was fine and can be detected by the computer but it was locked as shown by the WD Smartware. Then I plugged the board into the computer alone and it didn't light up and cannot be detected.
What can I do now??Please help! Thank you so much!!!


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 Post subject: Re: External HDD to SATA fail
PostPosted: January 18th, 2015, 16:13 
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Joined: April 3rd, 2011, 0:19
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Location: Providence, RI
When you say the disk is fine and can be detected by the computer are you SATA connecting it or connecting using the USB bridge shown in the picture?

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 Post subject: Re: External HDD to SATA fail
PostPosted: January 18th, 2015, 17:20 
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Joined: September 8th, 2009, 18:21
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candys067 wrote:
Then I plugged the board into the computer alone and it didn't light up and cannot be detected.

FWIW, I have version AE of the same bridge PCB. It flashes the LED when powered up and connected to a USB port on its own.

AIUI, you have connected your drive via SATA and it was detected, but its data were inaccessible due to encryption.

Does your drive spin up when it is connected to the bridge PCB?

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 Post subject: Re: External HDD to SATA fail
PostPosted: January 18th, 2015, 19:44 
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Joined: January 18th, 2015, 4:21
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Location: Hong Kong
Thank you for the replies!!!
I didn't connect my disk via SATA since I have another WD 1TB ext hdd. I connected that bridge PCB with my 2TB disk, the disk spined, WD Smartware popped up showing locked, no drive number was assigned to it and no files can be seen. If I connected with the original bridge PCB, the disk didn't spin.


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 Post subject: Re: External HDD to SATA fail
PostPosted: January 18th, 2015, 23:35 
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@candys067, measure the voltages between the ends of each of the 12 highlighted capacitors.

Measure the voltage between ground (the metal case of the USB socket) and each side of the zero-ohm resistor.

Be very careful not to short adjacent pins with your probes, as serious damage could result.


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Capacitors_Zero-Ohm-Resistor.jpg
Capacitors_Zero-Ohm-Resistor.jpg [ 256.93 KiB | Viewed 2782 times ]

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 Post subject: Re: External HDD to SATA fail
PostPosted: March 1st, 2017, 16:11 
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Joined: March 1st, 2017, 15:52
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Location: Poland
Hi fzabkar,

I know this post is > 2years old, however, I've just run into exactly same issue. I have WD My Passport Essential 1TB external drive. It stopped powering up last week. When disconnected from the case and connected via universal USB/SATA connector the disk spins up and can be discovered by the OS. Obviously the disk is encrypted and TestDisk can't rescue it. I have measured voltage on all 12 capacitors and 0ohm resistors:
outcome: voltage on both ends of the 0ohm resistor show 12V,
capacitors show voltage (1V, 2.5V,5V and 12V)

is this what they are supposed to measure? what should I do next?


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 Post subject: Re: External HDD to SATA fail
PostPosted: March 1st, 2017, 16:32 
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@dyll, those voltages appear to be OK.

    1V = Vcore for bridge IC
    2.5V = Vio for bridge and serial flash (U2)
    5V = HDD +5V

I would now see whether your bridge PCB can be detected by UVCView or USBDeview. This will confirm whether the USB interface is working and whether the bridge IC is at least partly functional.

You could try a USB 2.0 cable to isolate any problems with USB 3.0.

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 Post subject: Re: External HDD to SATA fail
PostPosted: March 1st, 2017, 17:30 
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Joined: September 8th, 2009, 18:21
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Location: Australia
Western Digital My Book Essential bridge PCB, 4061-705094:
http://www.hddoracle.com/viewtopic.php?f=112&t=1032

reallymine: WD MyBook/MyPassport decryption (freeware):
http://www.hddoracle.com/viewtopic.php?f=22&t=1488

WD My Passport Decryption Tool (commercial):
viewtopic.php?t=35048

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 Post subject: Re: External HDD to SATA fail
PostPosted: March 1st, 2017, 17:34 
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Joined: March 1st, 2017, 15:52
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@fzabkar,

The board doesn't get detected by my linux box. Can test it only with the original cable as the USB port of the board has a non-standard, proprietary shape. Tried connecting the cable to both USB 2.0 and 3.0 port on my PC. Same effect.


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 Post subject: Re: External HDD to SATA fail
PostPosted: March 1st, 2017, 17:49 
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Does the LED flash or light up at all? Can you see any cracked solder joints at the USB connector?

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 Post subject: Re: External HDD to SATA fail
PostPosted: March 1st, 2017, 18:43 
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Joined: October 16th, 2013, 13:21
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Location: Brazil
@dyll, can you post a picture of your board ?


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 Post subject: Re: External HDD to SATA fail
PostPosted: March 1st, 2017, 19:55 
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Joined: March 1st, 2017, 15:52
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Location: Poland
The LED lights up and stays on.
The joints at the connector look fine.
Adding some pictures of the board.


Attachments:
File comment: USB connector
usb_connector.png
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File comment: board
4061_705094_001_rev13.png
4061_705094_001_rev13.png [ 732.93 KiB | Viewed 2213 times ]
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 Post subject: Re: External HDD to SATA fail
PostPosted: March 1st, 2017, 20:21 
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A solid LED is inconclusive. If it were flashing, then we could be certain that the bridge IC were alive. Instead ISTM that the bridge IC is probably dead, at least on the digital side.

Is there is any response if you press the pushbutton?

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 Post subject: Re: External HDD to SATA fail
PostPosted: March 2nd, 2017, 15:44 
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nope, nothing changes when I press the button.


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 Post subject: Re: External HDD to SATA fail
PostPosted: June 8th, 2019, 0:17 
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Joined: June 8th, 2019, 0:02
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Location: Canada
I know this is a relatively older thread and I seem to have gotten my self into some trouble.
My Western Digital (WD) My Book Essential 3.0 TB external hard drive (it's old - about 7 years or so. I know it is my bad for not replacing it) was just running fine till a few days ago.

It decided to give up on me. When I plug it, it gives an sound that seems to be coming from the board.
Here is what happens when I attach both power and USB cable -
* The LED flashes continuously
* There is a digital sound (alarm sound?) coming from inside the board. It is not a clicking sound as would be from a hard disk damage but instead an alarm sound

I call WD for assistance and they were the ones who looked up and told me that it is 7 years old and can not assist me further. I started reading about these disks online and how they work. Opened the box and the PCB board is "4061-705094-001 Rev AG ".

Would appreciate any insight on this issue? I was thinking of finding a replacement board and trying it on but I have yet to find the PCB with the correct Rev online.

Thanks guys!


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