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 Post subject: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detected
PostPosted: March 16th, 2018, 14:13 
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Joined: July 7th, 2014, 6:44
Posts: 146
Location: Switzerland
Hi,

Received a C400 256 GB SSD with the following symptoms.

In Windows:
- Not detected as storage by Windows (and was blocking Windows from starting).
- Invisible from the disk manager, wether connected in eSATA or USB 3.0.

In Linux:
- detected by lsblk, but was very unstable and disappeared after a few seconds
- undetected by fdisk -l
- ddrescue was failing as trying to clone Petabytes

I made this :
- pressed on all pins of the SATA (data+power) connector 350° with the soldering iron to melt the solder if any microcrack(s)
- preheated the circuit board with hot air and applied hot air at 220°C on the Marvell MCU

This improved the operation of the SSD, which became much more stable.

The SSD answers quickly to lsblk and ddrescue. However fdisk -l is still not detecting it.
ddrescue now correctly attempts to clone the correct capacity ~256 Gb but is unable to clone any data however, whatever the logical location (offset) is.

I tried again the reflow, ramping up to ~245 °C, and also on the 2U22 chip on the verso. No further improvement.

In have no idea if the firmware had been upgraded or not. (I assume not.)

In the past I have known "blue screen errors" with Micron M4 SSDs because of an early firmware. However the SSD could be upgraded from Windows as detected by it, which is not the case this time.

Diagnosing SSD is alsways a difficult thing and I'm not sure whether it is an hardware or firmware issue here.
Seems that the SSD is unable to access the memory of the chips.

I attach a few pictures.

Anyone having faced such a problem with the RealSSD C400?

Thanks.


Attachments:
File comment: Verso of the Micro RealSSD C400 MTFDDAK256MAM-1K12 circuit board
Micron-C400-MTFDDAK256MAM-1K12-verso.jpg
Micron-C400-MTFDDAK256MAM-1K12-verso.jpg [ 467.31 KiB | Viewed 2639 times ]
File comment: Recto of the Micro RealSSD C400 MTFDDAK256MAM-1K12 circuit board
Micron-C400-MTFDDAK256MAM-1K12-recto.jpg
Micron-C400-MTFDDAK256MAM-1K12-recto.jpg [ 464.24 KiB | Viewed 2639 times ]
File comment: After the reflow
C400-after-heating.jpg
C400-after-heating.jpg [ 199.79 KiB | Viewed 2639 times ]
File comment: Before the reflow
C400-before-heating.jpg
C400-before-heating.jpg [ 113.34 KiB | Viewed 2639 times ]
File comment: Sticker of the C400 SSD
C400-sticker.jpg
C400-sticker.jpg [ 173 KiB | Viewed 2639 times ]
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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 16th, 2018, 15:29 
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Joined: September 8th, 2009, 18:21
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Location: Australia
If it were my SSD, I would vary the NAND supply voltage (by modifying the feedback divider at the LT3412A IC). Alternatively, one could remove the big inductor and patch an external variable regulator into the circuit.

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 11:10 
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Joined: August 15th, 2006, 3:01
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Location: CDRLabs @ Chandigarh [ India ]
Hi,
These Drives Are Nasty With Firmware Issues ,I have handled a couple before with PC 3000 SSD

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 11:39 
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Joined: May 13th, 2010, 11:17
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Ref. http://blog.acelaboratory.com/pc-3000-s ... dated.html

Controller: 88SS9174

If you have the SSD

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 15:02 
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einstein9 wrote:

Hopefully one day Ace will realise that the big "M" stands for "Marvell", not "Marwell".

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 15:20 
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Joined: October 21st, 2014, 1:39
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fzabkar wrote:
Hopefully one day Ace will realise that the big "M" stands for "Marvell", not "Marwell".
Every model I checked in the current version of PC-3000 SSD has it listed as Marvell.

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 15:26 
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http://blog.acelaboratory.com/pc-3000-ssd-list-of-supported-ssd-drives-regularly-updated.html

Quote:
PC-3000 SSD. List of supported SSD drives (regularly updated) v2.5.8

Quote:
We completely support 88SS9174 Marwell controller

Quote:
Marwell VanGogh \ VanGogh 2 family (88SS9174, 88SS9187, 88SS9189, 88SS9190, 88SS1074)

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 15:54 
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Joined: October 21st, 2014, 1:39
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My point being, the actual software is a better representation of Ace knowing it is "Marvell" than a blog post which could be a typo, or a blog editor that doesn't know as much as the developers.

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 16:03 
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Joined: November 29th, 2006, 10:08
Posts: 7186
Location: UK
Russians and Scandanavians often mix up “V” and “W” in my experience.

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 17:09 
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pcimage wrote:
Russians and Scandanavians often mix up “V” and “W” in my experience.
that too :)

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 20:59 
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or balme it on the appalling standard of the web, editing(or lack thereof), in general.


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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 25th, 2018, 21:33 
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Joined: August 18th, 2010, 17:35
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What's shown in status register?

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 Post subject: Re: Micron RealSSD C400 P/N MTFDDAK256MAM-1K12 partly detect
PostPosted: March 26th, 2018, 6:33 
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Joined: May 13th, 2010, 11:17
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Location: Kuwait
Actually, V or W doesn`t matter once we know what do they mean or refer to.

Conclusion,,, this Controller is supported in SSD

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