On Sun, 1 Aug 2010 22:15:44 +0000 (UTC), Meat Plow
wrote:

On Sat, 31 Jul 2010 23:55:21 +0100, Ian P wrote:

After mulling over all the good guidance and advice I recieved in
response to my original posting I decided which method to use and this
evening have successfully repaired the cut tracks.

I went for the soldered wire jumpers over the breaks, straightforward
under normal circumstances but in this case on a small scale. I bridged
four adjacent tracks using wire 0,05mm (2 thou) diameter taken from
super flexible test lead wire. The tracks were were between 0.1 and
0.15mm wide and the whole repaired area ended up 0.9mm wide and 4mm
long.

With the right equipment, microscope etc I can now see that a repair of
this sort could be done fairly easily, I managed with a strong magnifyng
glass that I fixed in place so I had both hands free. After I fixed the
first jumper I improved my technique and was able to work one handed by
using a longer length of jumper held taught exactly in line with the
track by bits of masking tape at either end. Because of its length its
really easy to position the jumper, I also put a little bit of packing
under the ribbon so that it formed a raised surface to keep the wire in
contact with the previously tinned tracks.

I still have to test the repair but mechanically all the joints are
sound and separated from each other so I'm happy.

Many thanks to all that responded.

Ian

Get yourself a 25x stereo magnifying visor. It's a good investment.

2.5x (5 diopter)?

--
Rich Webb Norfolk, VA