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Unknown "Knocked-off" component :( Please help.
http://forum.hddguru.com/viewtopic.php?f=10&t=43983		 Page 1 of 1
Author:  retina [ January 9th, 2024, 6:20 ]
Post subject:  Unknown "Knocked-off" component :( Please help.
Hi all,

I have accidently knocked-off a component from my NVME. I have found the photos of the same model and another model that has similar design.

Here are the photos:

This is my NVME:

Attachment:
s-l1600.jpg
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Here is the same layout but 512gb version:

Attachment:
yyy.PNG
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And here is the knocked-off component:

Attachment:
mkey.PNG
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I couldn't determine this part. May be a filter or a resistor. I don't know. Thank God the traces aren't ripped off.

I really need help.

Thanks.

BTW, I've tried 10k resistor but no success :( PC doesnt recognize the SSD.
Author:  fzabkar [ January 9th, 2024, 12:28 ]
Post subject:  Re: Unknown "Knocked-off" component :( Please help.
If you can tell us the part markings on the IC, I could at least try to find its datasheet.
Author:  retina [ January 9th, 2024, 12:31 ]
Post subject:  Re: Unknown "Knocked-off" component :( Please help.
fzabkar wrote:
If you can tell us the part markings on the IC, I could at least try to find its datasheet.

Thanks for reply :)

DZ0
376
Author:  fzabkar [ January 9th, 2024, 13:03 ]
Post subject:  Re: Unknown "Knocked-off" component :( Please help.
That IC is a load switch. It appears to be providing some level of protection at the 3.3V input to the SSD.

The top end of the missing component appears to be connected to the 3.3V input. You should verify this by performing a continuity test with a multimeter, or by observing the vias on the other side of the PCB.

The bottom end is connected to pins 1, 2 and 3 of the IC. Those are the power inputs.

Therefore, the only thing that makes sense for that missing component is an inductor. If so, then you can bridge it with a wire link or a blob of solder.


R5541K001D, Ricoh, N-ch load switch, 0.6V - 4.8Vin, 3A, 18 mOhm, marking DZ0+3XX, DFN(PLP)1216-6G:
https://static5.arrow.com/pdfs2/2019/1/15/21/23/22/585902/ric_/auto/r5541-ea.pdf

M.2 pinouts:
https://www.hddoracle.com/viewtopic.php?f=106&t=2506

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R5541K001D_application.gif
R5541K001D_application.gif [ 12.94 KiB | Viewed 3520 times ]
R5541K001D_pin_definitions.gif
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R5541K001D_pinout.gif
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Author:  SWM [ January 9th, 2024, 13:07 ]
Post subject:  Re: Unknown "Knocked-off" component :( Please help.
My opinion: the missing part is the fuse (0 Ohm).
Because the key does nothing except soft start...
Author:  retina [ January 9th, 2024, 17:16 ]
Post subject:  Re: Unknown "Knocked-off" component :( Please help.
fzabkar wrote:
Therefore, the only thing that makes sense for that missing component is an inductor. If so, then you can bridge it with a wire link or a blob of solder.


You are a hero "fzabkar" :)

I've removed the 10k resistor and soldered a filter(inductor). And..... It WORKED. 8)

I really do appreciate your help and knowledge. Also do respect :cool:

Thank you.
Author:  retina [ January 9th, 2024, 17:17 ]
Post subject:  Re: Unknown "Knocked-off" component :( Please help.
SWM wrote:
My opinion: the missing part is the fuse (0 Ohm).
Because the key does nothing except soft start...


Thank you.

This forum has a lot of heroes i guess. :)
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