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 Post subject: Re: SanDisk X300s Power issue?
PostPosted: February 21st, 2018, 17:04 
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Here is one more important question that needs an answer.

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 Post subject: Re: SanDisk X300s Power issue?
PostPosted: February 26th, 2018, 23:44 
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Adisa wrote:
pcimage wrote:
On this device, it’s much more likely that it’s suffering from firmware damage and/or flash degradation than an actual electronic fault.


Looks like you are correct.
It get BSY state as soon as its recieve any ATA command.
According to ACE, there is no solution for that issue yet.

Anyone who had success fixing this?


I killed 4 of them with diskpart / clean command. I'm sure disk's stuck at busy state and unable to access them.
Most probably i'll send them to rma but i opened one for investigation. I hope i find out something to fix.


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 Post subject: Re: SanDisk X300s Power issue?
PostPosted: February 27th, 2018, 0:15 
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mrcico wrote:
[I killed 4 of them with diskpart / clean command. I'm sure disk's stuck at busy state and unable to access them.
Most probably i'll send them to rma but i opened one for investigation. I hope i find out something to fix.

Could you at least take the same measurements as the OP so that we can compare? In particular, could you measure the voltage at the "0V capacitor"?

Photos of your PCB may also be good for comparison purposes. For example, your ICs will probably have different date codes. This can be useful when identifying part markings.

BTW, Diskpart merely writes zeros to the drive. I can't see how it could have killed your drives, unless they already had other problems.

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 Post subject: Re: SanDisk X300s Power issue?
PostPosted: March 4th, 2018, 19:05 
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Sorry for my late mail. Yes hard to believe that my ssd's killed by diskpart but i did same procedure to sure about it. At the 4th ssd, i definitely sure about it. :lol:


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 Post subject: Re: SanDisk X300s Power issue?
PostPosted: March 5th, 2018, 3:41 
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Can you measure the voltages in the photo clips?


References:

88SS9190-BJM2, Marvell, 4-channel flash controller

TPS22965, Texas Instruments, 5.7V, 6A, 16mO Load Switch With Adjustable Rise Time and Optional Quick Output Discharge, marking ZSA0, 8-pin:
http://www.ti.com/lit/ds/symlink/tps22965.pdf

TPS62085, Texas Instruments, adjustable 3A Step-Down Converter with DCS-Control and Hiccup Short Circuit Protection, 2x2 HotRod Package, marking PD5Q, 7-pin:
http://www.ti.com/lit/ds/symlink/tps62087.pdf
http://www.ti.com/lit/ug/slvu809/slvu809.pdf

TLV71318, Texas Instruments, 4-pin, 150-mA, 1.8V, capacitor-less LDO Regulator, marking AW:
http://www.ti.com/lit/ds/symlink/tlv713p.pdf

TLV71310, Texas Instruments, 4-pin, 150-mA, 1.0V, capacitor-less LDO Regulator, marking ET:
http://www.ti.com/lit/ds/symlink/tlv713p.pdf

TPS3897, Texas Instruments, 6-pin, Adjustable Supervisory Circuit with Active-High, Open-Drain Output, marking UM:
http://www.ti.com/lit/gpn/tps3897

TMP103, Texas Instruments, 1.4V Temperature Sensor, I2C/SMBus, 4-pin WCSP, marking TA:
http://www.ti.com/lit/ds/symlink/tmp103.pdf


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 Post subject: Re: SanDisk X300s Power issue?
PostPosted: March 5th, 2018, 3:44 
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More images:


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