All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 39 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: December 8th, 2022, 23:02 
Offline

Joined: May 10th, 2015, 0:18
Posts: 82
Location: Australia
WD Green SSD 480GB (SanDisk) Short Pins board Location SM2258XT 20-82-00469-2 54-50-02087-2

Can anyone please tell / show me where the short pins for safe mode are located on this board urgently.


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: December 9th, 2022, 0:10 
Offline
User avatar

Joined: February 9th, 2009, 16:13
Posts: 2520
Location: Ontario, Canada
Perhaps a photo of each side would help.

_________________
Luke
Recovery Force Data Recovery


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: December 9th, 2022, 11:26 
Online

Joined: October 24th, 2009, 15:22
Posts: 872
Location: Poland
Your drive have controller SM2258XT or 20-82-00469-2.

_________________
Flash Killer - everyday new resources (pinout, XOR, ECC,config) for flash devices


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: December 9th, 2022, 20:56 
Offline

Joined: May 10th, 2015, 0:18
Posts: 82
Location: Australia
skillet wrote:
WD Green SSD 480GB (SanDisk) Short Pins board Location SM2258XT 20-82-00469-2 54-50-02087-2

Can anyone please tell / show me where the short pins for safe mode are located on this board urgently.

Attachment:
20221128_153409.jpg
20221128_153409.jpg [ 3.55 MiB | Viewed 10726 times ]

Attachment:
20221128_153345.jpg
20221128_153345.jpg [ 3.66 MiB | Viewed 10726 times ]


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: December 9th, 2022, 21:11 
Offline
User avatar

Joined: February 9th, 2009, 16:13
Posts: 2520
Location: Ontario, Canada
Chip off with FE. Not yet supported by PC3000.

_________________
Luke
Recovery Force Data Recovery


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: December 9th, 2022, 22:01 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
Is there any activity via SATA?

I can see a 5V e-fuse (marking ACH) at U10 near the TI PMIC (V079). If necessary, the e-fuse can be bypassed by linking the R58 or R19 pads on the other side (confirm with measurements before trying this).

There should be 3 supply voltages at inductors L2, L4 and Lx.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: December 9th, 2022, 23:03 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
U10 is actually a P-channel MOSFET configured as a high-side load switch. I expect it switches 5V power to the whole PCB under the control of the DevSleep pin. I have seen a similar component ("1D") fail on other Sandisk SSDs. This MOSFET can be bypassed by bridging R19 or R58.

NTLUS4195PZ, ON Semiconductor, Power MOSFET, -30V, -4.0 A, Single P−Channel, marking ACx, UDFN6:
https://www.onsemi.com/pdf/datasheet/ntlus4195pz-d.pdf

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: December 11th, 2022, 19:46 
Offline

Joined: May 10th, 2015, 0:18
Posts: 82
Location: Australia
WD Green SSD 480GB (SanDisk) as per photo

We only need

Short Pins board Location for Safe Mode


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 12th, 2023, 5:48 
Offline

Joined: January 12th, 2023, 5:38
Posts: 16
Location: Italy
As a complete newby, I've experienced the same issue with the same board, is there a way to fix by removing and soldering resistors/capacitors without using pc-3000, or software is the only way?
Is this small black chip shorted/burned (color is darkest than the other) ?
Help is really appreciated for moving first steps


Attachments:
20221128_153409.jpg
20221128_153409.jpg [ 541.29 KiB | Viewed 9669 times ]
Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 12th, 2023, 5:55 
Offline

Joined: January 12th, 2023, 5:38
Posts: 16
Location: Italy
Did you fixed the issue ? if yes, can you explain how you did ?
Have same issue with same exact board, the only problem is that I'm a newby, but need to save some data inside


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 12th, 2023, 11:55 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
@matthew555, if you want to test the hardware, measure the voltages between ground (eg a screw hole) and each of the inductors (L2, L4, L?). Also measure the voltages at R58 and R19.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 12th, 2023, 15:35 
Offline

Joined: January 12th, 2023, 5:38
Posts: 16
Location: Italy
Thanks very much for your support and help ...
this are the values :
L2 = 2.74VDC
L4 = 1.25VDC
L3 = 0.02VDC
R58 = 5VDC
R19 = 5VDC


Attachments:
photo_2023-01-12_20-12-30.jpg
photo_2023-01-12_20-12-30.jpg [ 1.55 MiB | Viewed 9589 times ]
Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 15th, 2023, 13:45 
Offline

Joined: January 12th, 2023, 5:38
Posts: 16
Location: Italy
I've checked with a thermal-camera and in this area it seems to be concentrated all the heat

Wrote a mail to PC-3000 and it seems there is no compatibility with my Sandisk-based CPU 82-00469 controller.

Is there a chance I can do for fix and save some files ? replacing L2 L3 and L4 could lead to a possible fix ?


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 15th, 2023, 14:47 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
@matthew555, it would appear that the output voltage at L3 is shorted to ground. There are several possible culprits, but let's hope that there is a shorted capacitor, in which case the fix would be to remove it.

I would measure the resistances of each of the capacitors so that we can narrow down the possibilities.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 16th, 2023, 6:26 
Offline

Joined: January 12th, 2023, 5:38
Posts: 16
Location: Italy
L1 = 0.4 Ωohn
L2 = 0.4 Ωohm
L3 = 0.4 Ωohm
all 3 sounds 'beeb' when touched with tester that means there is connectivity between the 2 poles - (Using MASTECH MS8910 Smart SMD Tester)


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 16th, 2023, 11:14 
Offline

Joined: November 7th, 2020, 5:31
Posts: 1084
Location: The_UK
@matthew555, have you just measured the resistance of the inductors themselves? The power line L3 is on appears to be shorted to ground, if you measure it's resistance to a screwhole it should confirm. It's then a question of finding out which item on the line is shorted to ground, the inductors are inline and have no connection to ground.

@fzabkar, I don't remember seeing one but have you put a guide together about the basics of ssd testing like the tvs diode faq? It might save some repetition in the long run.

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


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 16th, 2023, 13:10 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
@Lardman, I do have tutorials on switchmode power supplies, but now we're looking for a shorted capacitor, so they wouldn't be useful.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 16th, 2023, 15:39 
Offline

Joined: January 12th, 2023, 5:38
Posts: 16
Location: Italy
L2 = 54.0K-ohm (measurement came after few seconds)
L3 = start at 5.0M-ohm got fixed value around 0.74M-ohm (fixed measurement came after a countdown values of a couples of minutes long)
L4 = 2.38K-ohm (measurement came after few seconds)


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 16th, 2023, 16:47 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
It looks like there is no short, so that would suggest that the PMIC (V079) is faulty. Try applying downward pressure on the IC, just in case there is a solder problem with the BGA balls. If this doesn't work, then it may be possible to patch in an external supply, but we would need to know the voltage.

BTW, this IC is made by Texas Instruments, but it doesn't appear to be a standard off-the-shelf part.

Similar parts ...

LM10507, 3x Programmable Buck + 2.5V 250mA LDO Power Management IC (PMIC), marking V087, DSBGA (34):
http://www.ti.com/lit/ds/symlink/lm10507.pdf

LM10504TMX/NOPB, Texas Instruments, marking V039 - Triple Buck + LDO Power Management IC (PMIC)
http://www.ti.com/product/LM10504
http://www.ti.com/lit/ds/symlink/lm10504.pdf

LM10524TMX/NOPB, Texas Instruments, marking V088 - Triple Buck Power Management IC (PMIC) for SSDs
http://www.ti.com/product/LM10524
http://www.ti.com/lit/ds/symlink/lm10524.pdf

LM10524TMX-A/NOPB, Texas Instruments, marking V089 - Triple Buck Power Management IC (PMIC) for SSDs
http://www.ti.com/product/LM10524

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: WD Green SSD 480GB Short Pins board Location SM2258XT
PostPosted: January 16th, 2023, 19:22 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
This thread has a photo of the ball-out:

https://www.linux.org.ru/forum/general/16323481


Attachments:
V079_ballout.jpg
V079_ballout.jpg [ 1.4 MiB | Viewed 9271 times ]
V079_top_mark.jpg
V079_top_mark.jpg [ 26.93 KiB | Viewed 9271 times ]

_________________
A backup a day keeps DR away.
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 39 posts ]  Go to page 1, 2  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 27 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