I've had some luck with just reflowing the solder between the board and con=
nector on USB drives.
I've also had luck moving the memory chip over to an identical working USB =
drive (thumbdrive that is)



Cris Wilson
Information Resource Consultant
College of Architecture, Arts, and Humanities
Clemson University
864-656-6081


-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of=
 PICdude
Sent: Monday, October 03, 2011 12:46 PM
To: piclist@mit.edu
Subject: [EE] USB drive emergency

My new flash drive just died and I desperately need data off of it, as it's=
 been almost a week since my last backup with a lot of work done since then=
..

I really suspect the connector as it's a bit bent.  When plugged in, it eit=
her is not detected at all, or if I put pressure on the connector it will d=
etect something, then come up with "One of the USB devices is not recognize=
d...".

It's a USB 3.0 drive (9-pin connector), but my computer has 4-pin USB ports=
..  I've opened up the flash drive and the connector has "110815", which I'v=
e not yet been able to find.  But it looks identical to Amphenol GSB316441C=
EU (datasheet... =20
http://media.digikey.com/pdf/Data%20Sheets/Amphenol%20PDFs/GSB316431CEU.pdf=
 ) or Wurth 692112030100 (datasheet... =20
http://katalog.we-online.de/kataloge/eican/media/pdf/692112030100.pdf )

I'm stripping a generic USB cable and intend to solder the 4 wires to the a=
ppropriate pads on the flash-drive PCB, but am not clear which pins on the =
USB side are mapped to which SMD pins on the PCB side, because the Amphenol=
 connector does not show pin numbers, though the Wurth does.  I'm testing w=
ith an ohmmeter, but so far all I see is that USB pin 1 maps to the second =
SMD pin, and that matches the Wurth connector datasheet.

Would it be safe to assume that these connectors (including the once I
have) have the same mappings?  And anything I need to do with the shield wi=
re?

Before I cause more damage, thoughts appreciated.

Cheers,
-Neil.



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