HI,
any ideas how to meassure the fuse?
The Led wont blink and the SSD did not recogniced in BIOS.
Attachment:
IMG_6316.JPG [ 2.24 MiB | Viewed 12056 times ]
Attachment:
IMG_6315.JPG [ 2.44 MiB | Viewed 12056 times ]
best regards
Fabian
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| Sandisk SDSSDP-128G Dead http://forum.hddguru.com/viewtopic.php?f=10&t=35388 |
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| Author: | fabianf [ May 22nd, 2017, 3:54 ] |
| Post subject: | Sandisk SDSSDP-128G Dead |
HI, any ideas how to meassure the fuse? The Led wont blink and the SSD did not recogniced in BIOS. Attachment: IMG_6316.JPG [ 2.24 MiB | Viewed 12056 times ] Attachment: IMG_6315.JPG [ 2.44 MiB | Viewed 12056 times ] best regards Fabian |
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| Author: | fzabkar [ May 22nd, 2017, 13:52 ] | ||||
| Post subject: | Re: Sandisk SDSSDP-128G Dead | ||||
Measure the voltages across the capacitors and on either side of "17X".
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| Author: | fabianf [ May 23rd, 2017, 4:13 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
HI, thx for reply. Attachment: DC-DC_converter.jpg [ 137.22 KiB | Viewed 12000 times ] Attachment: 5V-caps.jpg [ 44.8 KiB | Viewed 12000 times ] Attachment: 17X.jpg [ 49.18 KiB | Viewed 12000 times ] Fabian |
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| Author: | fzabkar [ May 23rd, 2017, 15:21 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
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. |
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| Author: | fzabkar [ May 23rd, 2017, 16:45 ] | ||
| Post subject: | Re: Sandisk SDSSDP-128G Dead | ||
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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| Author: | fabianf [ May 24th, 2017, 2:47 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
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. |
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| Author: | fzabkar [ May 24th, 2017, 3:15 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
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. |
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| Author: | HaQue [ May 24th, 2017, 3:26 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
This controller should be ok to do a NAND chip-off recovery. |
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| Author: | fabianf [ May 24th, 2017, 9:14 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
OK, thanks for ur help. Fabian |
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| Author: | Amarbir[CDR-Labs] [ May 25th, 2017, 13:17 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
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 . |
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| Author: | pcimage [ May 25th, 2017, 13:52 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
Looks like 20-82-00369-1 to me Something like this... http://www.flash-extractor.com/library/ ... 94_93__4x1 |
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| Author: | Amarbir[CDR-Labs] [ May 26th, 2017, 7:25 ] |
| Post subject: | Re: Sandisk SDSSDP-128G Dead |
pcimage wrote: Looks like 20-82-00369-1 to me Something like this... http://www.flash-extractor.com/library/ ... 94_93__4x1 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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