Roman Black wrote:
>
> Very interesting desoldering technique Richard!
> Thanks. But this does require cutting all the
> legs off the chip first, right?


Yes, the chip must be sacrificed for the safety of the PCB. I like to
say that there is one component of an electronic assembly that can not
be replaced. The PCB!

Roman, also see my revised method in my reply to Bala.


-- Rich


>
> I also like Alexandre's Brazilian "rubber condom
> tubes" that fit to the end of the solder sucker
> device. I would like to try these but have not seen
> them for sale here.
> -Roman
>
> Richard Ottosen wrote:
> >
> > When I clip out the IC to save the board, I don't use a solder sucker to
> > remove the pins from the holes.
> >
> > Instead, I use a hypodermic needle:
> >
> > First go to your druggist and get a syringe with the biggest needle they
> > have. The size I always get is just the right size to go snugly through
> > an IC lead's hole. (Note: In our drug war society you aren't supposed to
> > be able to do this. I have never had ANY trouble getting a needle, no
> > questions asked. Maybe it is because I always ask for the biggest needle
> > they have?).
> >
> > Remove the needle from the syringe and grind off the sharp tip. Use the
> > syringe for dispensing fluids, etc.
> >
> > Place the needle over the IC lead on the solder side of the board. Heat
> > the pad and the needle until the needle pushes through the board taking
> > the IC lead with it.
> >
> > Remove the heat and wiggle/rotate the needle in the hole until the
> > solder solidifies. The needle is stainless steel and the solder will not
> > stick to it.
> >
> > Pull the needle out of the hole. There may be a tube of solder sticking
> > out from the hole. Just break this off with your finger nail.
> >
> > The hole is now open and solder free with the pad, plating and trace
> > 100% intact every time!
> >
> > -- Rich
> >
> > Quentin wrote:
> > >
> > > You want to save the PIC?
> > > If not, cut all the pins and use a solder sucker to remove the pins.
> > > Less heat on your board.
> > >
> > > Quentin
> > >
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