All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: Samsung 860 EVO SSD 1 TB over voltage repair
PostPosted: August 24th, 2020, 15:23 
Offline

Joined: August 23rd, 2020, 22:59
Posts: 3
Location: united states
Hi Folks,
I made the mistake of swapping power supplies in two of my pc's, a evga 850w with a evga 1000w, and switched all cables except sata. The result overvolted 2 of my 860 evo 1 tb ssd's. Yes now I know I should have paid attention to the manual to always use original cables, but I thought since same manufacturer it would be fine (it would be nice of evga to prevent future user error by changing their form factors for the differing cables). I have read a couple posts here of similar situation with 850 evo ssd where replacing the e-fuse with a STEF4S repaired the drive. I have been trying to identify the efuse on the 860 but the layout is a bit different from the 850. Any guidance is appreciated, I would like to get these drives operable again. Fortunately I had nearly all important files backed up in the cloud, but still some I would like to retrieve. I have a few STEF4S ic's already ordered if they turn out necessary.

I don't see any burn damage and there was no smoke nor smell, just the drives could not be recognized by bios. Thanks for your help.

Attachment:
DSC00039.JPG
DSC00039.JPG [ 2.22 MiB | Viewed 10829 times ]
Attachment:
DSC00038.JPG
DSC00038.JPG [ 2.37 MiB | Viewed 10829 times ]


Top
 Profile  
 
 Post subject: Re: Samsung 860 EVO SSD 1 TB over voltage repair
PostPosted: August 24th, 2020, 20:30 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 13035
Location: Australia
Here it is:

Attachment:
STEF4S.jpg
STEF4S.jpg [ 17.45 KiB | Viewed 10821 times ]


You can bypass it with a wire link by connecting Vin to Vout, with caveats.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Samsung 860 EVO SSD 1 TB over voltage repair
PostPosted: August 24th, 2020, 21:02 
Offline

Joined: August 23rd, 2020, 22:59
Posts: 3
Location: united states
@fzabkar Thank you sir, I'll update with results.


Top
 Profile  
 
 Post subject: Re: Samsung 860 EVO SSD 1 TB over voltage repair
PostPosted: August 25th, 2020, 0:21 
Offline

Joined: August 23rd, 2020, 22:59
Posts: 3
Location: united states
Success! It wasn't easy to solder the wire, but at least there are 3 vins and 3 vouts. Thank you again fzabkar, many blessings to you in this life and the next.

Interesting, that the 2nd evo 860 drive I hotwired had a much different pcb layout but I was able to identify the efuse.

Attachment:
860evo hotwired.jpg
860evo hotwired.jpg [ 4.18 MiB | Viewed 10790 times ]


Top
 Profile  
 
 Post subject: Re: Samsung 860 EVO SSD 1 TB over voltage repair
PostPosted: January 17th, 2021, 0:32 
Offline

Joined: January 17th, 2021, 0:30
Posts: 1
Location: united states
hi there, noob here, i have the same exact ssd, and the same problem, could you tell me witch pins on that chip to jump? (hot wire) thank you!


Top
 Profile  
 
 Post subject: Re: Samsung 860 EVO SSD 1 TB over voltage repair
PostPosted: January 17th, 2021, 14:18 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 13035
Location: Australia
Find the datasheet for the STEF4S and the bridge the Vin and Vout pins, if there is no other damage.

http://www.hddoracle.com/viewtopic.php?f=100&t=1615&p=8872#p8872

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: Samsung 860 EVO SSD 1 TB over voltage repair
PostPosted: February 4th, 2021, 17:25 
Offline

Joined: February 4th, 2021, 16:18
Posts: 1
Location: spain
Hi after all, i need a little help, i guess you can support me

I find this post very interesting, i have a samsung evo 860 250gb that stop to work from one day to another, the bios doesn´t recognise the ssd, i make some measures and i found many shorts in the board, i show you in the following images.

Please, i need to recover some important files, what can i do with this? do you think if i do the short on the STEF4S the unit come alive?

Thnks 4 all.


Attachments:
rear.jpg
rear.jpg [ 453.93 KiB | Viewed 3074 times ]
front.jpg
front.jpg [ 428.28 KiB | Viewed 3074 times ]
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Google Adsense [Bot] and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group