Desoldering Chips, was Re: Can someone,
ard at p850ug1.demon.co.uk
Thu Apr 8 14:18:26 CDT 2010
> From: Joachim Thiemann
> > Bummer. I'm not good at desoldering chips without potential damage
> > to the board. Joe.
> The easiest way to not damage the board is to cut the leads to the chip,
> and then use a solder sucker to remove the solder in the hole along with
> the remnants of the chip leads. Hopefully if one or more of the leads is
> soldered to the ground plane, those pads used thermal isolation to
> separate them from the ground plane.
A well-known trick (but worth repeatign nonetheless) is that once you
have removed the IC body, you clamp/hold the board vertically, apply the
soldering iron on the non-compoennt side of the board and the solder
sucker to the same hole on the compoennt side. Normally that will get the
holes totally clear.
I use that method to clean out holes if I want to add more components to
a wave-soldred board (e.g. for doing a RAM upgrade).
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