I repair Motorola 2-way radios and am having difficulty desoldering
some of the components. For example, when desoldering a 6-pin channel
select switch, the outer pair of legs are removed easily. However, the
solder does not flow on the center pair of legs. I have tried
increasing the temperature and flux.

Any suggestions?

Thanks!

Since the old switch is bad cut the legs off and remove one leg at a
time.
If you cant get to the legs break the switch with pliers or vice grips.
Doug

wrote:
Any suggestions?

A technique I've used with SM ICs is to poke a fine
wire under all the pins on one side, and solder the
end down to a nearby pad or via. Then apply heat to
the pins while pulling sideways on the other end of
the wire, which lifts the pins one by one.

I read in sci.electronics.design that Clifford Heath
wrote (in
) about 'Desolder
Motorola Components', on Sat, 17 Sep 2005:
wrote:
Any suggestions?

A technique I've used with SM ICs is to poke a fine
wire under all the pins on one side, and solder the
end down to a nearby pad or via. Then apply heat to
the pins while pulling sideways on the other end of
the wire, which lifts the pins one by one.

It would work better if the wire didn't take solder, such as a fine
Nichrome or stainless steel wire. Of course, you have to loop it round
something to anchor the end. Dig out your old wire recorder!
--
Regards, John Woodgate, OOO - Own Opinions Only.
If everything has been designed, a god designed evolution by natural selection.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk