When I repaired (soldered) all new wires to copper traces at T14
connector, I found that a thin piece of softwood covered with very
fine emery paper cleaned the copper trace well enough to help solder
adhere.

image;  http://tinyurl.com/lh3w5f9

You may even find that the reverse side of emery paper works to clean
the copper trace(s).

Neil.

On 1/17/15, Alistair Bell <albell@shaw.ca> wrote:

> Clean the copper trace well, add a dab of flux ( rosin) if you have it to
> the copper, go in fast and hot with fine tipped iron.
>
> The wire you're trying to solder to the copper should be fine and tinned.
> The plastic will melt but not too badly if you go in, as I said, hot and
> quickly with very fine tipped (and tinned) iron.
>

--
Neil n

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