Dead Kingston M.2

[Adisa]

Hi!
I have this M.2 drive from Kingston that is not showing any sign of life..
Could someone please help showing me where to do some measurements, trying to troubleshoot what’s wrong.

Thanks

Attachments

[fzabkar]

Check the zero-ohm resistor and TVS diode. Then measure voltages V1, V2, and Vnand.

RT8010GQW, Richtek, 1.5MHz, 1A, High Efficiency PWM Step-Down DC/DC Converter, 2.5V to 5.5V input, marking ET, adjustable:
http://www.richtek.com/assets/product_file/RT8010=RT8010A/DS8010A-10.pdf

Attachments

Vnand.jpg (59.72 KiB) Viewed 15611 times

TVS.jpg (117 KiB) Viewed 15611 times

[Adisa]

Many thanks @fzabkar !
I will check this tonight and see what I can find.

[Adisa]

Check the zero-ohm resistor and TVS diode. Then measure voltages V1, V2, and Vnand.

RT8010GQW, Richtek, 1.5MHz, 1A, High Efficiency PWM Step-Down DC/DC Converter, 2.5V to 5.5V input, marking ET, adjustable:
http://www.richtek.com/assets/product_file/RT8010=RT8010A/DS8010A-10.pdf

The TVS diod shows 0.85Vdc (+ to -) and 0.38Vdc (- to +), thats not right, is it?
All the other voltages is 0.

[Adisa]

I’m a bit suppressed to se the writing “AC” on it tough, what could that mean?

Attachments

704498F5-718C-47C3-87FD-E4291944C790.jpeg (58.05 KiB) Viewed 15483 times

[fzabkar]

What voltage do you measure on each side of the zero-ohm resistor? Which point are you using as your ground reference?

[fzabkar]

Two possible candidates with different specs ???

TUSD05FB, SPSEMI, TVS diode, 5V, 350W, marking AC, SOD-323:
http://www.spsemi.cn/Upload/pdf/esd/tusd03fb-tusd24fb.pdf

UCD32C03L01, BrightKing, TVS diode, 3.3V, 220W, marking AC, SOD-323:
http://www.brightking.com/uploadfiles/file/ESD/u/2017100918551555154200.pdf

[Adisa]

What voltage do you measure on each side of the zero-ohm resistor? Which point are you using as your ground reference?

Each side is showing 3.3Vdc.
I used pin 3 as GND measuring voltages.

When I measured the diod, I used both sides on the TVS and the diod function on the Fluke DMM.

[fzabkar]

The TVS diode is OK. I would now check the Enable pins of each converter IC.

[Adisa]

The TVS diode is OK. I would now check the Enable pins of each converter IC.

They are all 0Vdc.
I measure middle pin on both sides, GND and EN

[fzabkar]

Something is keeping all 3 regulators switched off. Can you identify the markings on the smaller ICs/transistors/supervisors?

Attachments

RT8010_pinout.gif (5.16 KiB) Viewed 15391 times

ICs_2.jpg (76.89 KiB) Viewed 15391 times

[fzabkar]

IC "F" looks like a uP reset IC. If so, then its Reset pin should be high.

MAX6328_R29-T, Maxim, 3.3V supply monitor, 2.9V threshold, marking ACV, SC70:
https://datasheets.maximintegrated.com/ ... AX6405.pdf
http://www.farnell.com/datasheets/76835.pdf

[fzabkar]

Sorry, this is the wrong datasheet:
https://datasheets.maximintegrated.com/ ... AX6405.pdf

This one is correct, though:
http://www.farnell.com/datasheets/76835.pdf

[Adisa]

Something is keeping all 3 regulators switched off. Can you identify the markings on the smaller ICs/transistors/supervisors?

Here are some better pictures with the marking on.

Attachments

AC-V

[Adisa]

IC "F" looks like a uP reset IC. If so, then its Reset pin should be high.

MAX6328_R29-T, Maxim, 3.3V supply monitor, 2.9V threshold, marking ACV, SC70:
https://datasheets.maximintegrated.com/ ... AX6405.pdf
http://www.farnell.com/datasheets/76835.pdf

It is a reset IC, found it in the farnell pdf as "AVC".
Between pin 1 and 2 there is 0V.
Pin 1 and 3 = 0.69V

[fzabkar]

I can't identify the VLAN or T3m0J parts, but the others could be ...

SN74LVC1G02, Single 2-Input Positive-NOR Gate, marking CB5, 5-pin, SC70:
http://www.ti.com/lit/ds/symlink/sn74lvc1g02.pdf

SN74LVC1G11, Single 3-Input Positive-AND Gate, marking C35, 6-pin: (wrong package?)
http://www.ti.com/lit/ds/symlink/sn74lvc1g11.pdf

Your measurements for the ACV part would suggest that I may have incorrectly identified it. Otherwise it is not receiving 3.3V Vcc, which seems strange. In fact, I'm not even sure that the marking is "ACV" (the "A" doesn't look like an "A").

I would try to find the IC which is driving the Enable pins of the regulators, then work backwards from there. Just test for continuity between Enable and each of the ICs.

Attachments

MAX6328_pinout.gif (10.44 KiB) Viewed 15299 times

[HaQue]

Sometimes you can find images of the drive online, and look at what is in the same place as the "AC-V" part. Sometimes they substitute it with a different number and you can ID that one and at least know its function. If it is a critical part of analysis here..

[fzabkar]

Sometimes you can find images of the drive online, and look at what is in the same place as the "AC-V" part. Sometimes they substitute it with a different number and you can ID that one and at least know its function.

Good idea. Unfortunately I could find only one site with hi-res images.

http://www.ocfreaks.com/kingston-m-2-sata-sm2280s3-120gb-ssd-review/
http://i.imgur.com/JNlzEBY.jpg
http://i.imgur.com/VInsdcP.jpg
http://i.imgur.com/JNlzEBY.jpg

The other PCB uses the same "AC-V" part. :-(

The OP's "T3m0J" part is equivalent to "T3n0M", so it would appear that "T3" is the device code and the remaining characters are probably batch or date codes.

The "VLAN" part is equivalent to "f4R".

Unfortunately I can't identify the alternative parts, either. :-(

[fzabkar]

I should add that the TVS diode's rating is 5V (marking = 5C).

ESDA05CT, Congshuo Electronic Technology, TVS diode, bidirectional, 5V, 100W, marking 5C, SOD-523:
http://cssemi.cn/upfile/201601/2016010660039309.pdf

AQ4021-01FTG-C, Littelfuse, Congshuo Electronic Technology, TVS diode, bidirectional, 5V, 500W, marking 5C, SOD-323:
http://www.littelfuse.com/~/media/electronics/datasheets/tvs_diode_arrays/littelfuse_tvs_diode_array_aq4021_datasheet.pdf.pdf

[Adisa]

Thanks allot for all your inputs!

I've done some measurements. The 0,69V, could that be valid or is something pulling it down?

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