All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: Sandisk B-Key SSD Power issues
PostPosted: February 9th, 2018, 11:29 
Offline
User avatar

Joined: June 23rd, 2008, 11:26
Posts: 503
Location: Austin, TX
I have a Sandisk SD6PP4M-256G-1006 that is not getting power to it. Trying to figure out where to start since i do not have any schematics on it. Any help would be appreciated and if closer pics of certain areas are needed i can provide.

Thanks


Attachments:
SSD2.jpg
SSD2.jpg [ 726 KiB | Viewed 6492 times ]
SSD1.jpg
SSD1.jpg [ 739.91 KiB | Viewed 6492 times ]
Top
 Profile  
 
 Post subject: Re: Sandisk B-Key SSD Power issues
PostPosted: February 9th, 2018, 16:49 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
Could you measure +3.3Vin and +3.3Vout at "C76"? This component looks like a P-channel MOSFET or high-side load switch.

Could you measure V1, V2, VLDO1, VLDO2, and VLDO3 at TPS650532?

Could you identify the markings on IC4 and IC5? What is the voltage on the adjacent capacitor/inductor?

Could you identify what is in the unknown location between the flash controller and NAND?

Could you identify the markings on the two components near the edge connector? Do they test like diodes?


TPS650532, Texas Instruments, 5-Ch Power Management IC w/ 2 Step-Down Converters + 3 LDOs, Vin = 2.5V - 6V, 1A, VQFN-24:
http://www.ti.com/lit/ds/symlink/tps65053.pdf

NT5CC128M16FP-DI, Nanya, DDR3L SDRAM, 2Gbit 128Mx16, 1.35V, 96-Pin TFBGA:
http://www.nanya.com/en/Product/3775/NT5CC128M16FP-DII
http://www.wasuntech.com/upload/2017-06 ... 3_5361.pdf


Attachments:
unknown.jpg
unknown.jpg [ 131.12 KiB | Viewed 6452 times ]
TPS65053x_app_cct.gif
TPS65053x_app_cct.gif [ 60.28 KiB | Viewed 6452 times ]
TPS65053x.gif
TPS65053x.gif [ 28.1 KiB | Viewed 6452 times ]
TPS650532.jpg
TPS650532.jpg [ 166.77 KiB | Viewed 6452 times ]
MOSFET.jpg
MOSFET.jpg [ 71.85 KiB | Viewed 6452 times ]
IC4-5.jpg
IC4-5.jpg [ 116.77 KiB | Viewed 6452 times ]
IC1-3.jpg
IC1-3.jpg [ 82.5 KiB | Viewed 6452 times ]
3V_comp_2.jpg
3V_comp_2.jpg [ 37.67 KiB | Viewed 6452 times ]
3V_comp_1.jpg
3V_comp_1.jpg [ 33.61 KiB | Viewed 6452 times ]

_________________
A backup a day keeps DR away.
Top
 Profile  
 
 Post subject: Re: Sandisk B-Key SSD Power issues
PostPosted: February 9th, 2018, 18:21 
Offline
User avatar

Joined: June 23rd, 2008, 11:26
Posts: 503
Location: Austin, TX
Thanks for the info. I may not be able to get the readings to you till Monday.

The components near the connectors I am pretty sure they are Diodes. The one Near the B is reading .740 and the one near the M is reading .760


Top
 Profile  
 
 Post subject: Re: Sandisk B-Key SSD Power issues
PostPosted: February 9th, 2018, 19:06 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 15461
Location: Australia
I found this review:
https://www.custompcreview.com/reviews/sandisk-a110-256gb-m2-pcie-ssd-review/

IC5 is a TLV62090.

TLV62090, Texas Instruments, 3A, 2.5V - 5.5V, Synchronous Step-Down Converter, marking SBV, 16-pin:
http://www.ti.com/general/docs/lit/getliterature.tsp?genericPartNumber=tlv62090&fileType=pdf

The same MOSFET(?) is marked as "C77", so this would suggest that "C7" is the device marking and the third character is some kind of date/batch code.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

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