Repairing MISSING solder PADS

[salt0912]

I have lots of exp with soldering SMT, Thru-Hole and BGA but the one thing I have never been able to do is fix a missing solder pad. Mainly because I dont know how to or know what I need to do it.
http://www.youtube.com/watch?v=dwrnWasLYUc

He uses a DRY FILM ADHESIVE, what is that? does anyone know how to fix a missing pad from the board.

I know about just using jumper wire or scraping trace away and solder on to that but what I am asking is a missing pad with no trace going back to it. This is what I need to know how to fix.

I fix iPads, IPhones, IPod touch and everything else but stick to more board repair. I run into charger ports on HTC evo 4g or another usb charger port and I can normally fix them no problem but I'll run into a couple that have missing solder pads. I can't fix those issues because there is no trace to solder on to, if anyone knows anything please help me out

 

[bryanl]

Since the video was from BEST, Inc., they should have the featured product. Also a search for 'dry film adhesive PCB repair' returned several apparently relevant results.

Normal epoxies will not work for this, due to melting at too low temperatures, but specialty epoxies will.

 

[sm625]

I've used dry film adhesive. I had a sheet of it.

Used it alot. Once I ran out of pads on the sheet I used an Xacto knife to cut the border area into the pad shape I needed, and then stuck it to the board. But this was mainly for large pads, like 20x200 mil, which is rather large. To do a very small pad would be extremely difficult. The film doest stick well and would probably cause a solder bridge.

 

[Rhinomods]

I would stick to your normal thin jumper wire and find a secure spot to use epoxy to hold down your new charge port. (that is after the repairs have been done and the device is charging again.)

replacing a pad on a spot that ALWAYS receive a lot of unwanted force, with so many mid level traces will be very difficult to repair!

 

[Matt1970]

I used to always use a jumper wire. I never had one fail and come back.

 

[mindless1]

The video with the dry film adhesive doesn't really suit your need since they are only securing an existing lifted pad and one with the trace still attached at that.

Are you taking about a pad that had a buried trace connected by a via? If so those can be very difficult if not nearly impossible to repair unless you can trace it back to the next point you can solder to whether it be another pad or an exposed trace.

If you can't trace it then all that remains is to clean the area by flushing and wiping away debris, then scrap ONLY within the missing pad area with an x-acto knife or similar, trying to expose some of the buried trace or via.

Next put some flux on the area and a tinned soldering iron to try to plate the trace or via with solder. Next you would take a piece of copper foil with flux added to the back and solder that onto the plated trace or via, OR if the gap is small you could attempt to solder the component lead directly to it.