On Mon, 24 Nov 2008 11:18:33 +0000, Eeyore
wrote:



f825_677 wrote:

Arfa Daily wrote:

As Graham says, but be aware that unless you are a *very* experienced
solderer, and posess the right desoldering equipment, you will struggle to
do the job. These are some of the very worst bitches to get out of a board,
that you will *ever* come across. And then some.

You should try a Sony 1602 or 1601 IC from one of their broadcast mixer
boards - it can take an hour if you're lucky and all day if you're not
and we have professionaly desoldering vacumme equipment - the holes are
barely larger than the pin its self every engineer working on these
things in every broadcast engineering department complaints about these
devices.. Give me a 100 pin BGA device any day..

If you know the IC's buggered (or even of low commercial value), cut every pin
and remove them individually. Then clean the holes up. It always wins on time and
cost.

Graham



Absolutely. If the part being removed is not part of the salvage
operation, cut all pins, remove the part, and then desolder each pin
individually. You could also fill the open holes with solder, and
dog-ear the new chip's pins outward and make it a surface mount install.