7 Apr
2010
7 Apr
'10
11:36 p.m.
On 7 Apr 2010 at 23:16, Marvin Johnston wrote:
From: Joachim Thiemann
Tools are important. A good temperature-controlled iron (I use my
trusty Weller WTCPT with a 600 degree tip for through-hole stuff) and
a BIG solder sucker (the Edsyn DS017 is appropriate). Add solder to
the pin if it's a little thin on solder, use the solder pump to suck
the solder out of the hole. You should be able to see light through
the via; then wiggle the pin if necessary to free it from the sides
of the via.
Every once in awhile, I'll get a pin that doesn't free--I'll use a
#70 wire drill in a Foredom handset to clear out the via. Use low
speed and you'll usually end up with the via intact.
FWIW,
--Chuck
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.