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SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Singal
http://forum.hddguru.com/viewtopic.php?f=10&t=45620		 Page 1 of 1
Author:  Pi0tR [ September 20th, 2025, 6:23 ]
Post subject:  SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Singal
Hi, I need to recover data from a SanDisk Ultra II with a Marvell 88SS1074-BSW2 controller.
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Unfortunately, the drive shows no signs of life. I've tested all the capacitors and they seem fine.
I think the next step should be measuring the MOSFET.
I found two components in a SOT23 package (marked in red).
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My question is: is this a good approach, or should I try something else?
Author:  Lukas [ September 28th, 2025, 4:30 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
Have you connected this drive to MHDD or another system that can display work log controls?
Author:  Pi0tR [ September 28th, 2025, 14:31 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
Yes, I tried, but the disk is not detected by the BIOS or any software.
Author:  fzabkar [ September 28th, 2025, 14:55 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
Start by measuring the voltages at each of the 4 inductors surrounding the Active Semi PMIC.
Author:  fzabkar [ September 28th, 2025, 15:17 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
Measure these test points.

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Author:  Pi0tR [ September 30th, 2025, 10:44 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
ok
D2 5.1v
FB1 5.1v
C43 1.0v but on the right side of cap.

v1 1.3v
V2 1.0v
v3 2.7v
V4 1.8v
Author:  fzabkar [ September 30th, 2025, 14:55 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
Those voltages are probably OK, in which case you may have a firmware problem.
Author:  Lukas [ September 30th, 2025, 15:06 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
Pi0tR wrote:
Yes, I tried, but the disk is not detected by the BIOS or any software.

I didn't ask if the drive was detected, just about the status of the work log. I agree with the opinion about corrupted firmware.
Author:  Pi0tR [ October 1st, 2025, 8:36 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
Okay, so gentlemen, what are the chances of fixing this without a PC3K? Unfortunately, MRT didn't reveal the carrier. The pins at the bottom of the carrier look like JTAG. The question is, can I achieve anything with them? Or is there another method?
Author:  Lukas [ October 1st, 2025, 8:42 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
The pins are for connecting the terminal:
https://blog.acelab.eu.com/pc-3000-ssd- ... l-cpu.html

The problem with these drives is usually memory degradation, which, even with the use of appropriate tools, does not allow for satisfactory data recovery.
Author:  Pi0tR [ October 1st, 2025, 9:08 ]
Post subject:  Re: SanDisk Ultra II - 480 GB - 88SS1074-BSW2 - No Life Sing
I'm starting my journey with data recovery, the medium is purely for learning purposes, so I'll give it a try anyway, I'll keep you posted on the progress or lack thereof.

many thansk Lukas
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