HDD GURU FORUMS :: View topic - SATA M.2 with a big short circuit

@jtb1982, did you get any further with this case?

Have you removed IC1 to see if the short goes away? In any case, even if the short persists after removing IC1, you could then power up the SSD and examine the other supplies. It seems strange to me that there are two 3.0V LDO regulators ("HJ", TLV70730), if indeed that is what they are.

Here is a review of the 1TB version of this SSD:
https://www.techpowerup.com/review/crucial-mx500-m-2-1-tb/2.html

The SSD is populated on both sides, so one wonders how the two 3.0V regulators share the load, assuming they power the NAND Vcc.

The SDRAM is a 1.35V IC which can run at 1.5V.

MT41K256M16TW-107:P, Micron, 32 Meg x 16 x 8 banks SDRAM, 1.35V or 1.5V, marking D9SHD, 96-ball FBGA:
https://media-www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf
https://www.micron.com/support/tools-and-utilities/fbga?fbga=d9shd

This makes me wonder whether the NAND I/O is also running at 1.5V, but I can't locate its I/O voltage spec.

MT29F1T08EMCAGJ4-5M:A, Micron, NAND flash, 1 Tbit, 128G x 8, 2.7V - 3.6V, marking NW926:
https://www.micron.com/support/tools-and-utilities/fbga?fbga=nw926
https://au.mouser.com/ProductDetail/Micron/MT29F1T08EMCAGJ4-5MA?qs=rrS6PyfT74d3t%2F4Ob%2FBLeg%3D%3D

Author:	fzabkar [ March 19th, 2022, 12:45 ]
Post subject:	Re: SATA M.2 with a big short circuit
MP2188GQA, Monolithic Power, Dual 3A, 2.5V - 5.5V, 1.2MHz, COT Synchronous Step Down Switchers With Auto Output Discharge, marking AKJ, QFN-6+2+6+2: https://www.monolithicpower.com/en/documentview/productdocument/index/doc_url/L01QMjE4OF9yMS4wMS5wZGY/prod_id/MTA2NQ/ http://www.users.on.net/~fzabkar/Datasheets/DATAURLS.HTM

Author:	Lardman [ March 19th, 2022, 13:09 ]
Post subject:	Re: SATA M.2 with a big short circuit
I use a can of freeze spray for short hunting as I'm too cheap to buy a thermal camera, not sure how well it would work in your climate though.

Author:	fzabkar [ March 21st, 2022, 19:10 ]
Post subject:	Re: SATA M.2 with a big short circuit
@jtb1982, did you get any further with this case? Have you removed IC1 to see if the short goes away? In any case, even if the short persists after removing IC1, you could then power up the SSD and examine the other supplies. It seems strange to me that there are two 3.0V LDO regulators ("HJ", TLV70730), if indeed that is what they are. Here is a review of the 1TB version of this SSD: https://www.techpowerup.com/review/crucial-mx500-m-2-1-tb/2.html The SSD is populated on both sides, so one wonders how the two 3.0V regulators share the load, assuming they power the NAND Vcc. The SDRAM is a 1.35V IC which can run at 1.5V. MT41K256M16TW-107:P, Micron, 32 Meg x 16 x 8 banks SDRAM, 1.35V or 1.5V, marking D9SHD, 96-ball FBGA: https://media-www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf https://www.micron.com/support/tools-and-utilities/fbga?fbga=d9shd This makes me wonder whether the NAND I/O is also running at 1.5V, but I can't locate its I/O voltage spec. MT29F1T08EMCAGJ4-5M:A, Micron, NAND flash, 1 Tbit, 128G x 8, 2.7V - 3.6V, marking NW926: https://www.micron.com/support/tools-and-utilities/fbga?fbga=nw926 https://au.mouser.com/ProductDetail/Micron/MT29F1T08EMCAGJ4-5MA?qs=rrS6PyfT74d3t%2F4Ob%2FBLeg%3D%3D

Author:	jtb1982 [ March 22nd, 2022, 9:23 ]
Post subject:	Re: SATA M.2 with a big short circuit
Lardman wrote: I use a can of freeze spray for short hunting as I'm too cheap to buy a thermal camera, not sure how well it would work in your climate though. The drive don't warm up in any moment

Author:	jtb1982 [ March 22nd, 2022, 9:32 ]
Post subject:	Re: SATA M.2 with a big short circuit
fzabkar wrote: @jtb1982, did you get any further with this case? Have you removed IC1 to see if the short goes away? In any case, even if the short persists after removing IC1, you could then power up the SSD and examine the other supplies. It seems strange to me that there are two 3.0V LDO regulators ("HJ", TLV70730), if indeed that is what they are. Here is a review of the 1TB version of this SSD: https://www.techpowerup.com/review/crucial-mx500-m-2-1-tb/2.html The SSD is populated on both sides, so one wonders how the two 3.0V regulators share the load, assuming they power the NAND Vcc. The SDRAM is a 1.35V IC which can run at 1.5V. MT41K256M16TW-107:P, Micron, 32 Meg x 16 x 8 banks SDRAM, 1.35V or 1.5V, marking D9SHD, 96-ball FBGA: https://media-www.micron.com/-/media/client/global/documents/products/data-sheet/dram/ddr3/4gb_ddr3l.pdf https://www.micron.com/support/tools-and-utilities/fbga?fbga=d9shd This makes me wonder whether the NAND I/O is also running at 1.5V, but I can't locate its I/O voltage spec. MT29F1T08EMCAGJ4-5M:A, Micron, NAND flash, 1 Tbit, 128G x 8, 2.7V - 3.6V, marking NW926: https://www.micron.com/support/tools-and-utilities/fbga?fbga=nw926 https://au.mouser.com/ProductDetail/Micron/MT29F1T08EMCAGJ4-5MA?qs=rrS6PyfT74d3t%2F4Ob%2FBLeg%3D%3D I remove all voltage regulator and the short circuit persist, I am talking with my boss to try to swap the memory and the controller but in my job we don't have much experience with BGA components, and buy a donor is too expensive.

HDD GURU FORUMS http://forum.hddguru.com/

SATA M.2 with a big short circuit http://forum.hddguru.com/viewtopic.php?f=10&t=42255	Page 1 of 1

Author:	fzabkar [ March 22nd, 2022, 12:30 ]
Post subject:	Re: SATA M.2 with a big short circuit
After removing the regulator, the short circuit won't load the 3.3V input, so you should then be able to power up the SSD and measure all the other supplies. Then you'll know which supply is missing, and you'll have a better idea how the power is distributed.

Page 1 of 1	All times are UTC - 5 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/