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Ralph Mowery

In article -
september.org, says...

jeanyves wrote:

you must first re-soldier the circuit, with fresh leaded soldier
then use the soldier sucker, one pin at a time and it will come off
(except if it's a multi layer board there you really need a desoldering
station)

Yes I?ve found sometimes soldering a joint with fresh solder before
de-soldering it makes the process easier.
Kind of a mystery why (except if the original is lead-free solder--we all
know about that...)

I just started playing with the surface mounted devices about 3 weeks
ago after working with the older types for about 50 years. Just glad
the old computer boards I have been practicing on must have had the
lead solder on them. They seemed easy to work with.

Then I got an old mother board that must have the lead free stuff on it.
Using the hot air gun was not difficult to get the old part off. When
I tried to clean up the pads the device was on with some solder wick
with the old setting of the soldering iron about all I got done was to
stick the braid to the pads. Cranked up the heat on the iron and still
not much luck. Finally heated the area with the hot air gun then used
the braid and iron and that worked much beter.

Any other good hints on workig with the lead free solder other than
preheating the board ? Even putting some tin/lead solder on the pads
don't seem to help.