SanDisk X300s Power issue?

[fzabkar]

Here is one more important question that needs an answer.

why.jpg (73.46 KiB) Viewed 12305 times

[mrcico]

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.

[fzabkar]

[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.

[mrcico]

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.

Attachments

[fzabkar]

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

Attachments

TPS22965_pinout.gif (13.41 KiB) Viewed 11796 times

TPS62085_pinout.gif (10.96 KiB) Viewed 11796 times

TLV71310.jpg (108.6 KiB) Viewed 11796 times

[fzabkar]

More images:

Attachments

TLV713_app_cct.gif (7.64 KiB) Viewed 11795 times

TLV713_pinout.gif (6.55 KiB) Viewed 11795 times

[mkorosec]

I have the same drive, SanDisk X300.

I did the measurements on points you marked.

Attachments

reg1.jpg (69.86 KiB) Viewed 8434 times

TPS22965_load_switch.jpg (57.98 KiB) Viewed 8434 times

reg2.jpg (67.52 KiB) Viewed 8434 times

reg3.jpg (52.62 KiB) Viewed 8434 times

reg4.jpg (68.77 KiB) Viewed 8434 times

TLV71310.jpg (61.41 KiB) Viewed 8434 times

TLV71318.jpg (84.54 KiB) Viewed 8434 times

[fzabkar]

ISTM that those voltages are OK.