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Samsung 970 Evo Plus 500GB no power http://forum.hddguru.com/viewtopic.php?f=10&t=45930	Page 1 of 1

Author:	gameboybin [ March 15th, 2026, 12:29 ]
Post subject:	Samsung 970 Evo Plus 500GB no power
I got this 970 Evo plus Samsung NVME SSD Attachment: Screenshot 2026-03-15 232347.png [ 60.59 KiB \| Viewed 1397 times ] Attachment: 4014583999529977145.jpg [ 594.27 KiB \| Viewed 1397 times ] I have measured some capacitors. None of them gives any voltages Upon Heat inspection the only chip that have a slight temperature is this AtAYF chip Attachment: IRI_20260316_020146.jpg [ 252.8 KiB \| Viewed 1397 times ] Attachment: VIS_20260316_020146.jpg [ 68.73 KiB \| Viewed 1397 times ] Attachment: 4162089774145312879.jpg [ 517.19 KiB \| Viewed 1397 times ] The drive consuming 0.1A Thanks for helping me out!

Author:	fzabkar [ March 15th, 2026, 14:08 ]
Post subject:	Re: Samsung 970 Evo Plus 500GB no power
"AtAYF" is an e-fuse. There should be 3.3V at Vin and Vout. https://www.hddoracle.com/viewtopic.php?p=8872#p8872 I expect that its pinout would be similar to STEF05: https://www.hddoracle.com/download/file.php?id=3096&mode=view

Author:	fzabkar [ March 15th, 2026, 15:59 ]
Post subject:	Re: Samsung 970 Evo Plus 500GB no power
fzabkar wrote: I expect that its pinout would be similar to STEF05: Perhaps it's similar to STEF4S rather than STEF05.

Author:	gameboybin [ March 21st, 2026, 7:13 ]
Post subject:	Re: Samsung 970 Evo Plus 500GB no power
So i managed to fix the drive. The problem was the Power IC S2FPS05A01. After swapping the chip. The drive started working again

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