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 Post subject: Samsung 840 Pro 512GB - MZ-7PD512
PostPosted: May 3rd, 2026, 11:38 
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Joined: May 3rd, 2026, 11:24
Posts: 2
Location: london - uk
Samsung 840 Pro 512GB - MZ-7PD512

I believe my SSD is stuck in BSY State.

Its old but very little use - <1 year with little read/writes.

Tried power cycle trick - no change. (plug SATA Power only - ON for 60 mins, OFF for 60 seconds, ON for 60 mins)

Using systemrescue USB on different laptop w/ SATA-USB
Code:
sudo hdparm -I /dev/sdb
/dev/sdb:

sudo smartctl -a /dev/sdb
Read Device Identity failed: scsi error device will be ready soon


Using systemrescue USB on same PC via SATA
Code:
ata5: link is slow to respond, please be patient (ready=0)
ata5: link is slow to respond, please be patient (ready=0)
ata5: link is slow to respond, please be patient (ready=0)
ata5: hardreset failed
ata5: reset failed, giving up


I read that I can short two pins to enter SAFE/TECHNICAL mode - https://www2.futureware.at/~philipp/ssd ... Manual.pdf

Is data recovery without PC-3000 possible?

I would be willing to pay in advance for DIY Solutions, Ideally trying to avoid sending off to a Data Lab


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 Post subject: Re: Samsung 840 Pro 512GB - MZ-7PD512
PostPosted: May 4th, 2026, 8:41 
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Joined: May 3rd, 2026, 11:24
Posts: 2
Location: london - uk
some other members - @ivo.andonov - seemed to have fixed this specific drive by changing / re-soldering the RT9991

https://forum.hddguru.com/viewtopic.php ... 36#p314636

Ive also read it could be the internal fuse.

I am planning to check these parts when my Multimeter arrives, and possibly change them.

Does anybody else have any ideas? - Data Recover in the UK is now around £550 for this task


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 Post subject: Re: Samsung 840 Pro 512GB - MZ-7PD512
PostPosted: May 6th, 2026, 17:36 
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Joined: November 7th, 2020, 5:31
Posts: 1290
Location: United Kingdom
Win95 wrote:
Does anybody else have any ideas? - Data Recover in the UK is now around £550 for this task


Not it's not.... It's half that.

_________________
Data Recovery Services in the UK.
https://www.usbrecovery.co.uk/


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