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Toshiba nVME KBG30ZMV256G not detected
http://forum.hddguru.com/viewtopic.php?f=10&t=41162		 Page 1 of 1
Author:  speakerbox [ April 5th, 2021, 11:43 ]
Post subject:  Toshiba nVME KBG30ZMV256G not detected
Hi everyone,

I have seen one or two threads with this specific nVME SSD from Toshiba, no info so far.
The device is not visible in BIOS, and I would say it doesnt even get warm when connected.

I must say I have no specific tools for this such as PC3000. I only have MRT which I think it is of no use (correct me if I am wrong)

Has anyone encountered this issue before? Is chip-off the only way to go? no instructions or pinout in case the SSD is in BSY mode?

Picture attached.

Many thanks in advance.

Image
Author:  fzabkar [ April 5th, 2021, 15:02 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
Measure the voltages in this thread:

http://www.hddoracle.com/viewtopic.php?f=23&t=3054
Author:  speakerbox [ April 5th, 2021, 16:10 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
fzabkar wrote:
Measure the voltages in this thread:

http://www.hddoracle.com/viewtopic.php?f=23&t=3054


thank you! I will reply back soon
Author:  speakerbox [ April 5th, 2021, 16:17 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
fzabkar wrote:
Measure the voltages in this thread:

http://www.hddoracle.com/viewtopic.php?f=23&t=3054


Measured:

V1 1.8v
V2 1.2v
3.3v present

It seems OK then I see...
Controller corrupted? chip-off?
Is there a ROM shorted point or so?
Author:  arvika [ April 6th, 2021, 4:28 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
We have some time ago this model and was recovered. It was PCB failure if I good remember. Chip-off is last option here.
Author:  speakerbox [ April 6th, 2021, 4:58 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
arvika wrote:
We have some time ago this model and was recovered. It was PCB failure if I good remember. Chip-off is last option here.

I have all voltages, I dont know what I'm missing.
Author:  speakerbox [ April 6th, 2021, 11:27 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
I wish there was a paid forum like the one Louis Rossmann has, where paid people actually help to answer questions.
Author:  Lardman [ April 6th, 2021, 11:51 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
speakerbox wrote:
I wish there was a paid forum like the one Louis Rossmann has, where paid people actually help to answer questions.


DR doesn't naturally lend itself to that model. If your voltages are fine then it's most likely the controller, but you can't tell for sure without the device in hand or hooked up to something like PC3000 portable. If someone has bought that for 10K they will want to recover their investment before providing advice, free or not to their competitors.
Author:  suricate.ch [ April 6th, 2021, 15:58 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
speakerbox wrote:
I wish there was a paid forum like the one Louis Rossmann has, where paid people actually help to answer questions.

Well, in your case, you would have paid for nothing, if it's the controller, you can not do it yourself. Have you tried to power it for a long time, like 1 hour, then reset and see if you get something ?
Author:  speakerbox [ April 6th, 2021, 16:50 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
Lardman wrote:
speakerbox wrote:
I wish there was a paid forum like the one Louis Rossmann has, where paid people actually help to answer questions.


DR doesn't naturally lend itself to that model. If your voltages are fine then it's most likely the controller, but you can't tell for sure without the device in hand or hooked up to something like PC3000 portable. If someone has bought that for 10K they will want to recover their investment before providing advice, free or not to their competitors.


Thank you Lardman.
Yes, I totally get that people need to recover their investment. I am referring to having people ask questions that are made, more than anything.
Obviously paying a monthly subscription, for example. That way they can get paid.
Author:  speakerbox [ April 6th, 2021, 16:52 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
suricate.ch wrote:
speakerbox wrote:
I wish there was a paid forum like the one Louis Rossmann has, where paid people actually help to answer questions.

Well, in your case, you would have paid for nothing, if it's the controller, you can not do it yourself. Have you tried to power it for a long time, like 1 hour, then reset and see if you get something ?


If I can pay and just get questions answered, that would be great. I mean I will still be asking for questions or advice! even if the answer is not desirable.
Thanks for the reply by the way!
Author:  labtech [ April 7th, 2021, 0:12 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
What does the status register show in MRT when powering on the drive via SATA port?
Author:  Lardman [ April 7th, 2021, 14:41 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
labtech wrote:
What does the status register show in MRT when powering on the drive via SATA port?
Its an nvme AFAIK the protocols aren't compatible - you've not going to get anything on the sata register are you ? (Genuine questions -I can't test it, I don't have MRT ).
Author:  labtech [ April 8th, 2021, 21:16 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
Brain fart, sorry
Author:  labtech [ April 18th, 2024, 5:28 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
Just revising this post...
Now with the availability of NVMe adapters and tools, status register is available when testing.
Author:  okton [ April 18th, 2024, 8:57 ]
Post subject:  Re: Toshiba nVME KBG30ZMV256G not detected
If it is not detected by BIOS probably PCIe interface is not responding, so noone could not read any status from the controller.
If you had checked voltages only think you can check more are PCIe bus lines (data and clock pairs). If you are lucky those might be broken.
But even if you are extremely lucky (those are ~6 connections among ~30-100 which could brick disc) then you will not be able to repair them without microscope, precise soldering iron and at least hot air station.
If you want the disk talk to you where it feels pain, only way would be to force controller into testmode, then use professional DR tool.
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