17 Oct
2012
17 Oct
'12
9:49 p.m.
On Wed, 17 Oct 2012, David Riley wrote:
It is interesting to see how the boards continued to shrink in size too.
Towards the end of the PC era 80386, the smallest boards were barely much
larger than the space required to fit the ISA slots. Photos of some of
those "universal" type 386/486 motherboards that I mentioned might make
for far more interesting photos though.
On Oct 17, 2012, at 8:38 PM, Tothwolf wrote:
Desoldering braid really shouldn't require much extra heat. If it isn't
removing solder well, try adding some liquid flux to the braid. Unless you
have to stay "lead free", you might also consider reflowing the joint with
some good old 60/40 or 63/37.
When you get a bridge, clean the iron's tip
of excess solder, apply a
drop of liquid rosin flux to the joints, and drag the iron down and
away from the component towards the ends of the leads. A narrow chisel
or heel type soldering tip helps, but the real key is the liquid RMA
flux.
The liquid flux helped a lot last time I was doing any real fine- pitch
soldering. Didn't have it before that, which was dumb. Oh well, live
and learn. Desoldering braid was the next best thing, but it can be
finicky (especially when you don't have a very high power iron). Once I get
access to the boxes that I have the boards stored in I'll
see if I can snap some photos. It may be awhile, however.
I have a good idea of what it looks like, since I've used a number of
QFP parts on carriers like that. Would still be interesting for
historical purposes, though, I guess.