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Samsug 860 EVO dead
http://forum.hddguru.com/viewtopic.php?f=10&t=42365		 Page 1 of 1
Author:  Morpheus [ May 1st, 2022, 14:29 ]
Post subject:  Samsug 860 EVO dead
Hi guys, I'm new to the forum, my name is Davide, sorry for my poor English! I was fumbling in the computer case while it was on, and by mistake I moved the SSD cables, when i restarted the pc, the SSD is gone, not displayed in the bios, not even in disk management. I think I made a short circuit (?).
I wanted to ask if I could do something. I attach some photos

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Author:  fzabkar [ May 1st, 2022, 16:24 ]
Post subject:  Re: Samsug 860 EVO dead
There is a 10-pin e-fuse above the SDRAM. Measure the voltages at its input and output pins.
Author:  Morpheus [ May 2nd, 2022, 12:31 ]
Post subject:  Re: Samsug 860 EVO dead
Thanks for the quick reply. I wanted to ask you kindly, since I am not an expert, if you can tell me by marking on the photo which pin I should measure. Sorry but I can't go on :roll:
Author:  Morpheus [ May 2nd, 2022, 14:13 ]
Post subject:  Re: Samsug 860 EVO dead
Morpheus wrote:
Thanks for the quick reply. I wanted to ask you kindly, since I am not an expert, if you can tell me by marking on the photo which pin I should measure. Sorry but I can't go on :roll:
I add more detailed photo of the component

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Author:  fzabkar [ May 2nd, 2022, 14:18 ]
Post subject:  Re: Samsug 860 EVO dead
Measure 5Vin and 5Vout. Use a screw hole as your ground reference.

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Author:  Morpheus [ May 3rd, 2022, 11:02 ]
Post subject:  Re: Samsug 860 EVO dead
I checked under a microscope and realized that it is burned, has a small burned bubble on top. Can that component be purchased?

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Author:  fzabkar [ May 3rd, 2022, 12:56 ]
Post subject:  Re: Samsug 860 EVO dead
It's and STEF4S e-fuse:

http://www.hddoracle.com/viewtopic.php?f=100&t=1615

If there are no other problems, and if your PSU is OK, you can bridge 5Vin to 5Vout. Measure the voltages first, though.
Author:  Morpheus [ May 3rd, 2022, 13:10 ]
Post subject:  Re: Samsug 860 EVO dead
Assuming the power supply is ok, with this bridge in the future can cause problems? Can you make some lines for me to figure out what to connect with what? Just to make no mistake, thanks
Author:  fzabkar [ May 3rd, 2022, 13:47 ]
Post subject:  Re: Samsug 860 EVO dead
I've marked the points on the photo. I don't know how much more I can tell you other than to join the two points. Be aware that the drive will work, but it will no longer be protected from overvoltages. Replace the IC with an STEF4S if you want continued protection.

That said, if you are unable to measure a voltage, then you might consider passing the task to someone else.
Author:  Morpheus [ May 4th, 2022, 6:27 ]
Post subject:  Re: Samsug 860 EVO dead
I made the bridge and now it works! Is this https://it.aliexpress.com/item/1005003601615735.html?spm=a2g0o.productlist.0.0.356232b7OIg8Ca&algo_pvid=183833ff-27d0-4fe5-98c1-0ce6b767fd0f&algo_exp_id=183833ff-27d0-4fe5-98c1-0ce6b767fd0f-1&pdp_ext_f=%7B%22sku_id%22%3A%2212000026453060688%22%7D&pdp_npi=1%40dis%7CEUR%7C%7C3.69%7C%7C%7C%7C%7C%402100bb4916516598250055438e98ff%7C12000026453060688%7Csea
Author:  fzabkar [ May 4th, 2022, 13:50 ]
Post subject:  Re: Samsug 860 EVO dead
Yes, that looks like it (DFN package). I would prefer to buy it from a trusted source like Farnell, RS Online , Digikey, Mouser.

https://it.farnell.com/c/semiconduttori-circuiti-integrati/circuiti-integrati-di-gestione-di-potenza-pmic/controllori-hot-swap?st=stef4s
https://www.digikey.it/it/products/detail/stmicroelectronics/STEF4SPUR/4383954
https://www.mouser.it/ProductDetail/STMicroelectronics/STEF4SPUR?qs=DqCdCwOw4%2F72PHOKVsUxjg%3D%3D
Author:  Morpheus [ May 5th, 2022, 11:16 ]
Post subject:  Re: Samsug 860 EVO dead
Ok i ordered on mouser.it ! When it arrives I will let you know if everything works! Thanks you soo much
Author:  Morpheus [ July 5th, 2022, 11:46 ]
Post subject:  Re: Samsug 860 EVO dead
I mounted the component, but now if I try it doesn't work :cry: can there be some other problem? Before, it worked with the bridge
Author:  fzabkar [ July 5th, 2022, 13:48 ]
Post subject:  Re: Samsug 860 EVO dead
Can you measure the voltages on each pin?
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