All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 17 posts ] 
Author Message
 Post subject: USB PCB pads ripped off, where can I make contact to (image)
PostPosted: June 15th, 2017, 10:06 
Offline

Joined: March 6th, 2017, 15:27
Posts: 45
Location: United Kingdom
this PCB is missing 3 pads, where could I solder to instead ?

Any suggestions welcome

Attachment:
IMG_8835.jpg
IMG_8835.jpg [ 819.23 KiB | Viewed 2130 times ]


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 15th, 2017, 11:46 
Offline
User avatar

Joined: December 4th, 2012, 1:35
Posts: 2919
Location: Adelaide, Australia
think it is going to be like this. soldering to via's is better under stereo microscope.

Attachment:
usb.jpg
usb.jpg [ 117.26 KiB | Viewed 2119 times ]


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 15th, 2017, 12:50 
Offline
User avatar

Joined: April 3rd, 2011, 0:19
Posts: 1639
Location: Providence, RI
If you can't get the solder to stick well to those divots that were pointed out already you can probably trace out where they pop out on the other side.

_________________
Hard Drive & RAID Data Recovery Services
https://www.data-medics.com/raid-data-recovery/


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 15th, 2017, 13:37 
Offline

Joined: March 6th, 2017, 15:27
Posts: 45
Location: United Kingdom
thanks for your replies.

I scratched off the green stuff to reveal those tiny contacts, I tinned them and the wires and just about managed to get solid contacts onto them. I soldered the +5v onto the edge of the fuse and the ground onto the remaining pad. plugged it into an old XP dog and windows recognised it + the brand but thats all :(

on the back of the PCB, where the contacts are in the pic, is a big chip covering everything so I cant trace anything.

Almost got it, close but no cigar :?


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 15th, 2017, 13:39 
Offline

Joined: March 6th, 2017, 15:27
Posts: 45
Location: United Kingdom
what microscope would be good for doing a job like this ?

I had to use x10 single eye lense and both my eyes are out of sync now and sore


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 15th, 2017, 14:06 
Offline

Joined: November 29th, 2006, 10:08
Posts: 6895
Location: UK
If you can't get it and need a "chip off" then gimme a shout! :-)

_________________
PC Image Data Recovery
www.pcimage.co.uk


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 15th, 2017, 15:23 
Offline
User avatar

Joined: April 3rd, 2011, 0:19
Posts: 1639
Location: Providence, RI
No need for chip off in this case, it can easily be soldered.

Try using solid wires such as those in CAT5e cable. Dip the wires in flux, then tin them with a soldering iron and some 60/40 solder. Solder them first onto the USB port, plug that into an extension cable, then solder the wires to the board (that way you don't have to move it and have them pop off), and finally plug the extension cable into the computer. I do this all the time.

_________________
Hard Drive & RAID Data Recovery Services
https://www.data-medics.com/raid-data-recovery/


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 15th, 2017, 15:41 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 9688
Location: Australia
SlingShot wrote:
I soldered the +5v onto the edge of the fuse and the ground onto the remaining pad. plugged it into an old XP dog and windows recognised it + the brand but thats all :(

Doesn't this mean that the OP's soldering is OK and that the controller is not brain dead?

Furthermore, if there was a problem with the firmware, wouldn't the device ID as a generic USBest drive rather than the "brand"?

BTW, the PCB markings would suggest that the controller is a UT163-L4.

UT163 Enhanced USB2.0 Flash Drive Controller:
http://opendevices.ru/wp-content/upload ... _UT163.pdf

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 15th, 2017, 18:26 
Offline
User avatar

Joined: December 4th, 2012, 1:35
Posts: 2919
Location: Adelaide, Australia
try using dmde to make an image of the device, then use software to recover from the image.
ignore all windows msg and just open dmde and see if the device shows in there. if you get I/O errors, your soldering may be ok, but other problems exist.


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 16th, 2017, 14:37 
Offline
User avatar

Joined: August 15th, 2006, 3:01
Posts: 2296
Location: CDRLabs @ Chandigarh [ India ]
Hi,
Seems like a straight over soldering case if it does not work might be chipoff is the solution

_________________
Regards
Amarbir S Dhillon
CDRLabs Data Recovery - [ Chandigarh ,India ]
My Data Recovery Experiments - > https://www.facebook.com/chandigarhdatarecovery


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 16th, 2017, 15:06 
Offline

Joined: November 29th, 2006, 10:08
Posts: 6895
Location: UK
It's a VFBGA chip, not as straightforward as it looks :-)

_________________
PC Image Data Recovery
www.pcimage.co.uk


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 16th, 2017, 20:19 
Offline
User avatar

Joined: December 4th, 2012, 1:35
Posts: 2919
Location: Adelaide, Australia
data-medics wrote:
No need for chip off in this case, it can easily be soldered.

Try using solid wires such as those in CAT5e cable. Dip the wires in flux, then tin them with a soldering iron and some 60/40 solder. Solder them first onto the USB port, plug that into an extension cable, then solder the wires to the board (that way you don't have to move it and have them pop off), and finally plug the extension cable into the computer. I do this all the time.


had a few lately with even less damage than that where soldering header back on didnt work. Remember most usb drives are 4 layers, and doesnt take much to damage something somewhere. also each component value is fairly critical, so a resistor or cap not at spec can also stop it working.

often the force required to rip the head off will lift one or more vbga pads, and that is pretty hard to diagnose. reflowing for the average joe isnt easy, likely to have a sea of caps and resistors floating off the board.

a decent DR Tool supported device can be solved in an hour, so while chip off might seem dramatic and less elegant, if you can do it, it is sometimes the easiest and quickest way.

if it recognised the brand, it should mean soldering to those points is ok, but some circuitry between controller or nand isnt kosher, or firmware issue or nand corruption.


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 16th, 2017, 22:20 
Offline
User avatar

Joined: April 3rd, 2011, 0:19
Posts: 1639
Location: Providence, RI
i don't know, those pads look to have lifted straight out. I've found that most often when soldering on a new USB hub isn't working, it's just a matter of using larger gauge and shorter wires. I'm not saying it's impossible that there's damage to the under layers of the PCB, but from what I'm seeing, I'd say it's almost certain that it can be rigged up without chip off.

_________________
Hard Drive & RAID Data Recovery Services
https://www.data-medics.com/raid-data-recovery/


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 16th, 2017, 22:28 
Offline
User avatar

Joined: October 21st, 2014, 1:39
Posts: 51
Location: Ellijay, GA
HaQue wrote:
likely to have a sea of caps and resistors floating off the board.

You paint a lovely picture, I could see it in vivid color :)

_________________
Blizzard Data Recovery


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 17th, 2017, 4:21 
Offline

Joined: March 6th, 2017, 15:27
Posts: 45
Location: United Kingdom
I'm going to send it to Sean as I cant get it going properly.

What's a good microscope to use for doing soldering work at this level ?


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 17th, 2017, 20:25 
Offline
User avatar

Joined: December 4th, 2012, 1:35
Posts: 2919
Location: Adelaide, Australia
if you do a search on this forum, we have discussed microscoped pretty good. there is a thread with lots of info


Top
 Profile  
 
 Post subject: Re: USB PCB pads ripped off, where can I make contact to (im
PostPosted: June 19th, 2017, 16:11 
Offline

Joined: March 6th, 2017, 15:27
Posts: 45
Location: United Kingdom
HaQue wrote:
if you do a search on this forum, we have discussed microscoped pretty good. there is a thread with lots of info

Thank you, Ill do some digging


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 17 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 4 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