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WD Elements 4TB Repairable PCB? http://forum.hddguru.com/viewtopic.php?f=26&t=39149 |
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Author: | hattondjh [ November 15th, 2019, 16:35 ] |
Post subject: | WD Elements 4TB Repairable PCB? |
WD40EMAZ-51TKPB0 Attachment: Hi. I have a brand new WD Elements 4TB that had 19v powered in, instead of the 12v. The case board has a fried chip and so does the PCB. Can the fired chip be sourced and replaced? If so, what is it? Is this a case of sourcing a donor board? The reason I want to attempt to fix this drive is because it's brand new and I don't want it to go to waste, I hate waste. And I am also interested in Electronic Repair and its something I might consider getting into. There is no valuable information on this drive so I'm not going to be attempting anything for data recovery. Thank You, Daniel |
Author: | hattondjh [ November 15th, 2019, 17:30 ] | ||
Post subject: | Re: WD Elements 4TB Repairable PCB? | ||
Appreciate your help. The chip just fell off and one of the contacts is dirty so I'll give it a go tomorrow. I'll clean up the contact and fuse them two points together and see what happens. Do I need to touch the fuse or will I leave it alone for now? Again, appreciated thanks. Daniel
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Author: | fzabkar [ November 15th, 2019, 17:39 ] |
Post subject: | Re: WD Elements 4TB Repairable PCB? |
You can leave the fuse in-circuit. Just flow a blob of solder over it. Hopefully there are no other problems. You should measure the resistance between +12V and ground (eg a screw hole) just to be sure. |
Author: | hattondjh [ November 15th, 2019, 18:40 ] |
Post subject: | Re: WD Elements 4TB Repairable PCB? |
Can I ask your thoughts on the Reddit thread I made. Is the drive possible encrypted as some of the replies mention? https://www.reddit.com/r/datarecovery/c ... urce=share |
Author: | fzabkar [ November 15th, 2019, 18:43 ] |
Post subject: | Re: WD Elements 4TB Repairable PCB? |
Could we see the damaged USB-SATA bridge PCB? Your model is an Elements, so it is most probably not encrypted. However, the enclosure's firmware may be configured for a sector size of 4KB. Windows will complain that your drive needs to be formatted, but don't be tempted to do it. Instead you can still see your file system with a tool such as DMDE. https://dmde.com/download.html |
Author: | hattondjh [ November 15th, 2019, 18:51 ] |
Post subject: | Re: WD Elements 4TB Repairable PCB? |
Ok, thanks. I will post some pics of that in the morning. It's really great there are people like you willing to help. Thank you. |
Author: | hattondjh [ November 17th, 2019, 12:59 ] | ||
Post subject: | Re: WD Elements 4TB Repairable PCB? | ||
fzabkar wrote: Could we see the damaged USB-SATA bridge PCB? Your model is an Elements, so it is most probably not encrypted. However, the enclosure's firmware may be configured for a sector size of 4KB. Windows will complain that your drive needs to be formatted, but don't be tempted to do it. Instead you can still see your file system with a tool such as DMDE. https://dmde.com/download.html Here is the USB SATA Bridge. This one is probably a bit trickier to fix as the chip that's blown here is an 8 pin. Is the sector size issue relevant in Debian EXT4 format?, drive is used to store media in OpenMediaVault.
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Author: | fzabkar [ November 17th, 2019, 14:27 ] | ||
Post subject: | Re: WD Elements 4TB Repairable PCB? | ||
The blown chip is the dual MOSFET power switch. You can remove it by snipping its pins with flush cutters. Then you can bypass it with 2 wire links. If you are able to use a soldering iron, the whole repair should cost nothing. Windows won't see your file system when the drive is installed inside a PC, if the sector size is 4KB as I suspect. You would need to backup the data to another drive and copy it back again. BTW, there are 3 "ROMs" on the HDD PCB. I suspect that the ISSI chip contains the actual firmware and "adaptives", while the 2 Winbond chips probably contain cached write data for power loss protection. I expect that it would be safest to transfer all 3 to a donor PCB, should the need arise. W25Q40EWVIG, Winbond, serial flash memory, 4M-bit, 1.8V, dual/quad SPI & QPI, WSON-8: https://www.winbond.com/resource-files/w25q40ew-revh-01162017-sfdp.pdf IS25WP080, ISSI, 8Mbit, 1.8V, SERIAL FLASH MEMORY WITH 133MHZ MULTI I/O SPI & QUAD I/O QPI DTR INTERFACE: http://www.issi.com/WW/pdf/25WP016_080_040_020.pdf
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Author: | hattondjh [ November 19th, 2019, 6:32 ] |
Post subject: | Re: WD Elements 4TB Repairable PCB? |
Hello. I'm going to attempt a repair soon. Please can link me to where I can get the dual MOSFET chip please. Kindest Regards. |
Author: | hattondjh [ November 19th, 2019, 7:06 ] |
Post subject: | Re: WD Elements 4TB Repairable PCB? |
I removed the TVS diode and it still wont power up in my pc. I isolated pin 3 just incase but it still wont power up so I think a fuse near the TVS diode is fried also. Unfortunately this is now outside my pay grade because of scale of the fuses so I'm gonna quit. I might find someone with the skills needed to have a go at this but I would not pay alot seeing as this is not a data recovery exercise. I hate this thing going to waste so I might donate it to someone who can re commision this? Would this interest you fzabkar? |
Author: | fzabkar [ November 19th, 2019, 14:58 ] |
Post subject: | Re: WD Elements 4TB Repairable PCB? |
hattondjh wrote: I removed the TVS diode and it still wont power up in my pc. I isolated pin 3 just incase but it still wont power up so I think a fuse near the TVS diode is fried also. Unfortunately this is now outside my pay grade because of scale of the fuses so I'm gonna quit. I might find someone with the skills needed to have a go at this but I would not pay alot seeing as this is not a data recovery exercise. I hate this thing going to waste so I might donate it to someone who can re commision this? Would this interest you fzabkar? It's sad because you are so close to a repair. Maybe someone could do the minor soldering for you. You might like to ask here: https://www.eevblog.com/forum/repair/ The MOSFET need not be replaced, if you bypass it with wire links. I can help your technician with this. Otherwise you can find it in my database: http://www.users.on.net/~fzabkar/Datasheets/DATAURLS.HTM If you still can't find anyone to help you, and if you can't get a warranty replacement, and if you are willing to ship to Australia, I would pay the shipping cost. |
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