CompactFlash, SD, MMC, USB flash storage. Anything that does not have moving parts inside.
May 22nd, 2017, 3:54
HI,
any ideas how to meassure the fuse?
The Led wont blink and the SSD did not recogniced in BIOS.
best regards
Fabian
May 23rd, 2017, 4:13
HI,
thx for reply.
- 5V-caps.jpg (44.8 KiB) Viewed 12008 times
- 17X.jpg (49.18 KiB) Viewed 12008 times
Fabian
May 23rd, 2017, 15:21
Vcore = 1.24V
Vio (?) = 3.19V
3.0V and 1.8V appear to be the supplies for the NAND array.
In short, the supply voltages appear to be OK. I would check the 25MHz crystal with a scope, and I would confirm whether any IC is hot to the touch.
May 23rd, 2017, 16:45
The pinout of the NAND chips does not appear to be ONFI TSOP48. That said, the attached test points appear to connect to Ready/Busy* pins (which are open drain), so I'm wondering whether shorting these test pads while powering up the SSD will initiate some kind of test mode. Perhaps the SSD will then show up via SATA, albeit in test mode?
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- test_point.jpg (106.34 KiB) Viewed 11970 times
May 24th, 2017, 2:47
If I short the 2 pins an connect the drive to a PC i can see in the Diskmanagement a new disk. It has no partitions. In R-Studio i can see a partition with 15kb. So i think that is the testmode u wrote.
No one of the ICs get hot and I cant see some burned ICs.
The 25 MHz crystal to check is not possible for me. I dont have a scope.
May 24th, 2017, 3:15
ISTM that your SSD has a firmware problem and/or bad NAND. I don't believe there is any DIY solution.
The crystal is OK.
May 24th, 2017, 3:26
This controller should be ok to do a NAND chip-off recovery.
May 24th, 2017, 9:14
OK,
thanks for ur help.
Fabian
May 25th, 2017, 13:17
HaQue wrote:This controller should be ok to do a NAND chip-off recovery.
Haque Sir
,
Which controller is this i could not figure it out .
May 26th, 2017, 7:25
Thanks Sean Sir ,
Softcenter is on my investment list in a near time after i get the hang of VNR a little
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