USB Thumb Drive Repair

LG 1 GB UBVB USB thumb drive worked fine 2 days ago - today it appears dead.
No physical damage according to user - has been in her bag since last use 2 days ago
Dell Dimension w/ Windows XP Pro does not detect the USB drive - no alert on insertion.
Tried both front and rear USB ports on several other computers - none detect the thumb drive.
Not a drive letter issue - Disk Management does not see the thumb drive.
Does anyone know any tips or tricks to make this USB device usable again?  
ebarroukAsked:
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☠ MASQ ☠Commented:
If the drive simply can't be detected there is little you can do :(

I have had one case where a user confessed to leaving it in their pocket in a washing machine & just left it to dry at room temperature for a few days and it recovered. Wonder what else was in the bag - cell phone maybe??
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simpswrCommented:
If you try it in several pc's and it is not detected . . it has surely gone to heaven
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nobusCommented:
i have repaired one like this : - you have to open it , of course
there are 4 connections : + - and 2 signal;
i resoldered all 4 and it worked fine; but this is only because a connection was loose, and by pushing it in some way, it would recognise the stick
if this is not the case - you can still open it and experiment (it is lost anyway)
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ebarroukAuthor Commented:
I removed the case and tried soldering the 4 connections.  It recognized the device briefly, but reported a device malfunction when I switched it to another port.  I tried some more soldering, but never got the device to respond again.  Apparently this was the solution, but maybe my solderinfg skills need some practice or I need a more powerful magnifying glass to guide me.  It was a good try anyway.
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tom12gaCommented:
Would anyone care to weigh in any anomaly seen in the following disassembled USB 4GB Sandisk thumb drive.  
Any recommendations on using a multimeter prior to re-insertion?  
USB-Drive-1.png
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nobusCommented:
the somewhat loose is probably the problem
the 2 other ones keep the connextor case (ground) firmly to the stick
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