USB pen drive recovery ,help Needed

[hddbug]

Hi Gurus

I have a 256MB Transcend Pen drive for data recovery. It gets detected as new hardware But as unknown usb device. Is data Recovery possible? I have cleaned it with Isp Propyle alcohole but no use.
Thanks
Hddbug

[jono-ats]

The most common problem with USB pen drives is bad / broken solder joints. Open it up and resolder the pins from the USB connector.

If that doesn't work, find an identical device and transplant the memory chip from the bad device to the good donor.

Jon

[BlackST]

Don't forget checking the crystal for proper osc. / frequency and the solder of chip / controller, also if present the regulator !

[pcimage]

Remove the chip and read with suitable nand reader and s/w.

Then remove mix and sort data blocks into order and create disk image.

[hddbug]

Hi Thanks Jon , BlacKST & pcimage
I will resolder solder joints.Hope it will work.At this stage i dont have chip reader & any software to decode raw data but i am learning.
Thanks & Regards
Hddbug

[coolmac]

Remove the chip and read with suitable nand reader and s/w.

Then remove mix and sort data blocks into order and create disk image.

not understand yet,hi,pcimage would you like to explain you way in detail to us?"nand reader "?what kind of equipment did you refer to?thanks a lot.

[shaun]

A programmer which is capable of reading the Flash chip (assuming it is actually a NAND flash, although it doesn't matter what technology it is). I had more success in transplanting the flash chips to identical USB sticks than reading the chips directly, as data may be stored kind of garbled in the flash. The controller within the stick knows how to deal with.

[coolmac]

A programmer，i see ,really appreciate your explanation.

[hddbug]

Data Recovery Successful , I just desoldered a small IC & pen drive started detecting may be dry solder was the reason.
Thank you all for your help
Best Regards
Hddbug