Re: small soldering job
- From: "Paul Olley" <may_2005@xxxxxxxxx>
- Date: 26 May 2005 02:17:46 -0700
One such company is http://www.pcbtrain.co.uk/assembly.htm
I haven't used them myself.
Like the other posters I agree that it is quite feasible to solder it
yourself.
A good amount of flux is the thing that did the trick for me.
For around £5 I bought a bottle of "Future 315 Low Residue Flux"
(www.warton-metals.co.uk) I used a syringe to flood the (tinned) pads
before placing the 80 PIN TQFP. Soldered two diagonally opposite pads
before doing the rest. (This was the most difficult step, to get the
alignment exactly right!) My technique was to load the soldering iron
tip with a very small amount of solder and then to touch it to the pad
and pin with just a little pressure. The flux has the effect of making
the joint pretty much instantly. The flux tended to evaporate quickly,
so I just syringed more. I used an Antex M12 soldering iron, with a
very small tip that I had filed down a little to make a very fine
point. A magnifying glass from a set of "helping hands" was necessary
to make the pins clearly visible.
As I recall I only had one solder bridge, easily removed with solder
wick. Another popular technique is the "flood it with solder and then
remove it with wick" approach, which I haven't tried.
The only pins that didn't have a connection were I couple that I had
omitted to solder!
Paul.
.
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