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 Post subject: Re: Buffalo LS-WXL Series NAS RAID data recovery
PostPosted: September 14th, 2021, 16:03 
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Joined: September 7th, 2021, 16:15
Posts: 9
Location: Walton-on-Thames
pepe wrote:
Where's it frightening?

Considering I have a clone of Disk 2 but I can't get Disk 1 turned on to get a clone, I only have one shot at Disk 1.


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 Post subject: Re: Buffalo LS-WXL Series NAS RAID data recovery
PostPosted: September 14th, 2021, 16:26 
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Joined: October 3rd, 2005, 0:40
Posts: 3682
Location: Hungary
i meant where i was frightening with my words.

Quote:
Fzabkar: No need to frighten the OP.


snip it with a wire snipper or desolder it.

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 Post subject: Re: Buffalo LS-WXL Series NAS RAID data recovery
PostPosted: September 14th, 2021, 17:16 
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Joined: November 7th, 2020, 5:31
Posts: 385
Location: The_UK
We're back to board repair vs data recovery. :D

Pepe is of course right, if it's important data on there you really should be sending it in, especially if it's someone else's data and you're doing this commercially. - But - a 2 drive raid recovery isn't the cheapest. I don't think any of us offer a board only service or just a single drive from an array, it's too risky and not economically viable for us.

As long as the drive isn't opened you're not going to incur any extra cost for clipping the diode, just don't blow anything important up :lol:

If that doesn't work and you need to send the drives in for data recovery at least you know that level of service and therefore cost was justified.

nbendall wrote:
"Meter"? What setting am I using on the multimeter and what result should I expect?
If you're not sure watch Steve's video a few times he explains it better than I will.

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 Post subject: Re: Buffalo LS-WXL Series NAS RAID data recovery
PostPosted: September 14th, 2021, 19:36 
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Joined: September 8th, 2009, 18:21
Posts: 13501
Location: Australia
nbendall wrote:
"Meter"? What setting am I using on the multimeter and what result should I expect?

What is the best way to remove the chip should I need to? I have wire snips, pliers, screwdrivers, and a soldering iron to hand.

All your questions are answered in my FAQ.

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 Post subject: Re: Buffalo LS-WXL Series NAS RAID data recovery
PostPosted: September 15th, 2021, 3:45 
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Joined: November 7th, 2020, 5:31
Posts: 385
Location: The_UK
fzabkar wrote:
All your questions are answered in my FAQ.
Have you considered putting some of your online resources on Rossmann's Wiki ?

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 Post subject: Re: Buffalo LS-WXL Series NAS RAID data recovery
PostPosted: September 15th, 2021, 4:35 
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Location: Australia
Lardman wrote:
Have you considered putting some of your online resources on Rossmann's Wiki ?

My TVS Diode FAQ is too trivial for a repair wiki. It is aimed at people, primarily users, who have zero knowledge of electronics.

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 Post subject: Re: Buffalo LS-WXL Series NAS RAID data recovery
PostPosted: September 15th, 2021, 15:38 
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Joined: September 7th, 2021, 16:15
Posts: 9
Location: Walton-on-Thames
Hello again all, I have removed the TVS diode off the board using a pair of tweezers and a soldering iron. Prior to this, my multimeter was detecting a short on the TVS, which it is now not doing. What is the next step, should I connect the PCB back to the Disk or should I power on the PCB standalone to see if anything "fries"?

I watched Steve's video on removing the TVS but his multimeter had different settings to mine, so I just used the setting that makes the multimeter beep if there is a complete circuit.

It may be worth noting that before posting here, I connected Disk 1 to a computer and now that computer will not boot, but that isn't the point.

If a test of the PCB is needed, can you show me what pins I will need to test with the multimeter? This will be a bit harder to do since the only way I can power up the PCB is using a 3.5 HDD dock and the PCB will be halfway in the dock, see below:
Image

If a test is not needed, then is it safe to just pop the PCB back on Disk 1 and plug it in?

See below the picture of the TVS after it was removed:
Attachment:
foto_no_exif.jpg
foto_no_exif.jpg [ 744.79 KiB | Viewed 240 times ]


Thank you, everyone, for the support so far!


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 Post subject: Re: Buffalo LS-WXL Series NAS RAID data recovery
PostPosted: September 15th, 2021, 16:04 
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Joined: November 7th, 2020, 5:31
Posts: 385
Location: The_UK
nbendall wrote:
It may be worth noting that before posting here, I connected Disk 1 to a computer and now that computer will not boot, but that isn't the point.
The insides of PSU probably look like the insides of the NAS.

nbendall wrote:
If a test of the PCB is needed, can you show me what pins I will need to test with the multimeter?
Check the diode pads for resistance to ground the right hand side should be very low the left side should be considerably higher. If both are low you have other problems.

If everything is ok put just the pcb in your dock and power it up, if you kill the 15 quid dock no real loss. If the dock powers up and there's no smoke reattach the pcb to the drive and try powering the drive. Clicking or scratching power off immediately.

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