Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
November 23rd, 2017, 4:07
Hi Guys
I have a Micron RealSSD C400 , it has no power at all, anyone worked on this before? i think it uses electronic fuse ? Any feedback much appreciated, thanks.
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November 23rd, 2017, 9:22
Check 0 ohm resistors first
November 23rd, 2017, 11:40
All have continuity mr_spokk
November 23rd, 2017, 13:39
TerraNova wrote:... it has no power at all ...
What exactly do you mean? Which voltages have you measured?
November 23rd, 2017, 20:23
fzabkar wrote:TerraNova wrote:... it has no power at all ...
What exactly do you mean? Which voltages have you measured?
I did various test points on pcb, ex. 1v5, 3v3 etc all are showing the correct values. Marvel chip is dead cold
November 23rd, 2017, 20:41
I suspect that the controller and SDRAM would require 1.0V, 1.5V and perhaps 2.5V, while the NAND array would run off 3.3V/3.3V or 3.3V/1.8V. The serial flash might be a 3.3V or 2.5V device. If all these voltages are present at their respective test points, then the board is correctly powered.
I would measure the 5VF test point adjacent to the supervisor IC.
Next I would confirm whether the crystal is oscillating.
The following thread may be of some help to you.
Need help with a Crucial SSD, short circuit in 5v line:
viewtopic.php?f=10&t=29757
November 24th, 2017, 14:54
Have you tried to communicate with the SSD in diagnostic or "safe" mode?
November 24th, 2017, 21:28
Checking on it, thanks Frank
fzabkar wrote:I suspect that the controller and SDRAM would require 1.0V, 1.5V and perhaps 2.5V, while the NAND array would run off 3.3V/3.3V or 3.3V/1.8V. The serial flash might be a 3.3V or 2.5V device. If all these voltages are present at their respective test points, then the board is correctly powered.
I would measure the 5VF test point adjacent to the supervisor IC.
Next I would confirm whether the crystal is oscillating.
The following thread may be of some help to you.
Need help with a Crucial SSD, short circuit in 5v line:
viewtopic.php?f=10&t=29757
November 24th, 2017, 21:29
fzabkar wrote:Have you tried to communicate with the SSD in diagnostic or "safe" mode?
No response
November 24th, 2017, 22:22
FYI, the SDRAM in the other thread is a 1.5V part, and the serial flash memory is a 3.3V part.
MT41J128M16HA-15E:D, Micron, marking D9LGQ, FBGA96, DDR3-1333 SDRAM, 1.5V, 1.5ns, 16M x 16 x 8 banks:
https://www.micron.com/~/media/documents/products/data-sheet/dram/ddr3/2gb_ddr3_sdram.pdfM25P80V6G, STMicroelectronics, serial flash memory, 8-VFQFN, "V" = 2.7 - 3.6V:
https://www.jameco.com/Jameco/Products/ProdDS/321672-DS09.pdfThe NAND flash (MT29F128G08CFAAB, Micron) is an "L74A" part.
November 25th, 2017, 13:53
Frank ,
I Think i Have The SSD i Think , I Will Check And Let You People Know Might Be We Can Find The Real Cause Of Terranovas SSD Being Just Dead ,Just Wait For Tommorow Morning
November 25th, 2017, 15:58
The following thread suggests that the 5VF test point should rise to 2.5V at power-on and then drop to 0V when the supplies stabilise.
http://notebook1.ru/forma1/viewtopic.php?f=290&t=126331If 5VF is sitting at 0V, my next suspect would be the D250x crystal.
More info on the NAND, for completeness.
MT29F128G08CFAABWP-12A, Micron, L74A NAND flash, TSOP-48, 3.3V, 128Gb, x8, 166 MT/s, type 2D:
https://www.micron.com/parts/nand-flash/mass-storage/mt29f128g08cfaabwp-12z
November 25th, 2017, 18:03
I notice that, in the user forums, there is a potential remedy for a "no detect" symptom. Crucial advises the user to keep the drive powered for 20 minutes, during which time the firmware attempts to repair itself. Then the user is advised to power-cycle the SSD and check whether it comes ready. If not, then the procedure is to be repeated.
November 26th, 2017, 23:24
fzabkar wrote:I notice that, in the user forums, there is a potential remedy for a "no detect" symptom. Crucial advises the user to keep the drive powered for 20 minutes, during which time the firmware attempts to repair itself. Then the user is advised to power-cycle the SSD and check whether it comes ready. If not, then the procedure is to be repeated.
Not working, thanks
January 19th, 2018, 12:40
Hi,
I have exactly the same symptom!! All voltages measured right. Bios does not recognize it, but if I use an USB to sata adapter, I can read the Smart information and I can even flash the firmware. But if I try to initialize the disk, I get the cyclic redundancy check error. The chips are very cold too. The drive only have about 700hrs.
Any information would be great.
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