Hi,

When I repair a set with a crack in the PCB, I usually
run a wire/s to "bridge" broken "traces" that are very fine.
Do you know a technique to solder bridge fine printed
conductors?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

I would think putting a wire to join the bridges where there are breaks
in the traces, is a stronger way of doing this. Just simply bridging a
break with a bit of solder, and having no re-enforcement would not be as
strong. The finer a trace, the more fragile it will be, especialy if the
board has been cracked from damage.

--

Jerry G.
======

"Brad" wrote in message
...
Hi,

When I repair a set with a crack in the PCB, I usually
run a wire/s to "bridge" broken "traces" that are very fine.
Do you know a technique to solder bridge fine printed
conductors?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

I use Kynar wire wrap wire.


--
Jammy Harbin
J & J Electronics, Inc.
227 S. 4th St.
Selmer, TN 38375
731-645-3311
"Brad" wrote in message
...
Hi,

When I repair a set with a crack in the PCB, I usually
run a wire/s to "bridge" broken "traces" that are very fine.
Do you know a technique to solder bridge fine printed
conductors?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

There are repair kits for that (with spare copper traces to use in varius
thicknesses and angles).
Very useful when broken a series of data bus (eg 10 parallel lines).
There are even eye-lets (spare parts for thru-hole double side boards that
have holes destroyed).

In common boards, use thin cables as other have already mension, but first
make sure that you use glue (2 parts epoxy one preferable not contactive) to
make mechanical resistance in vibration of a broken board.
The glue if possible should be used on the oposite side of the solderings.
If glue cannot be used, use flexible cables to concatenate the join leaving
1mm extra cable in -^- shape, so the ^ will take the vibrations.


"Brad" wrote in message
...
Hi,

When I repair a set with a crack in the PCB, I usually
run a wire/s to "bridge" broken "traces" that are very fine.
Do you know a technique to solder bridge fine printed
conductors?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.

Brad wrote:
Hi,

When I repair a set with a crack in the PCB, I usually
run a wire/s to "bridge" broken "traces" that are very fine.
Do you know a technique to solder bridge fine printed
conductors?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.



First, i evaluate the type of break and if the board is structurally
intact. Sometimes i have put epoxy on the top level for some
reinforcement. I then use a fine sand paper and a cutter tool to
remove the paint from the copper traces. Then i put some flux on
the break points and lightly tin the damaged area.

I save clipped components leads to bridge the larger areas. Sometimes
multiple leads are used on a large ground trace or power buss. I save
some thin stranded wire for tougher repair pieces. I pull a thin strand
out and then overlay it on one end of a damaged trace. I tack one end,
and shape it for contour. I then tack the other end down. Then carefully
try to fill in the rest. I use a very thin tipped solder pencil for the
smallest traces.

In some cases, i have used wirewrap wire to bridge point to point.
No need to strip it. A little heat and you can tin the ends easily.

Bob


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"Brad" wrote in message
...
Hi,

When I repair a set with a crack in the PCB, I usually
run a wire/s to "bridge" broken "traces" that are very fine.
Do you know a technique to solder bridge fine printed
conductors?

Thanks in advance, Brad

Before you type your password, credit card number, etc.,
be sure there is no active key logger (spyware) in your PC.



Assuming no high f problems are likely I
tend to take varnish covered thin copper wires back either way to
solder points at the end connectors.
If many traces and no hf prob. then I tend to platt/plait
them together into a braid.

electronic hints and repair briefs , schematics/manuals list on
http://homepages.tcp.co.uk/~diverse

I use PVA (woodworkers/white) glue to repair the board, and fine wire or
just solder to bridge the traces.

N

"Brad" wrote in message
...
| Hi,
|
| When I repair a set with a crack in the PCB, I usually
| run a wire/s to "bridge" broken "traces" that are very fine.
| Do you know a technique to solder bridge fine printed
| conductors?
|
| Thanks in advance, Brad

I wonder what kind of glue others use. I have always preferred epoxy. I
have been afraid that white glue might absorb moisture from the air and
become conductive or corrosive. Has anyone had any problems with glues like
this? Remember the brown glue that causes corrosion when it gets old in the
televisions and audio products from the 80s and early 90s?

Leonard

"NSM" wrote in message news:Cii7d.7350$223.6671@edtnps89...

I use PVA (woodworkers/white) glue to repair the board, and fine wire or
just solder to bridge the traces.

N

"Brad" wrote in message
...
| Hi,
|
| When I repair a set with a crack in the PCB, I usually
| run a wire/s to "bridge" broken "traces" that are very fine.
| Do you know a technique to solder bridge fine printed
| conductors?
|
| Thanks in advance, Brad