On 9/4/06, Alan B. Pearce <A.B.Pearce@rl.ac.uk> wrote:
> >There is a better alternative than lifting pins individually:
> >Make a large solder blob that covers all the pins, then hold
> >the board at an angle and slide the iron around the pins until
> >the solder is molten on all of them at the same time, at which
> >time the chip falls off the board.
>
> I would not like to try this with a 44 pin or larger chip, unless I was not
> wishing to save the PCB. The amount of heat required would soon cause pad
> lifting.
>

I've done it with 44-pin parts, without damaging the board.  You make
a solder blob down the side of each row of pins, then run the iron in
a circle around the perimeter of the chip until everything melts.  The
trick to avoid lifting traces is to apply no force at all.  Let the
chip fall by gravity.

Regards,
Mark
markrages@gmail
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