Jeff Liebermann wrote in
:

On Tue, 17 Jul 2012 15:53:01 -0400, "Tom Del Rosso"
wrote:

For the past couple of hours I've been trying to get the solder out of
a hole. It's a mobo cap, and the other hole sucked right out. It's
like an obstruction. The solder melts with difficulty, but even then
I can't get a dental pick as deep as in the other hole. The cap
pulled out easily on both leads.

Probably a multilayer board with a big ground plane acting as a heat
sink.

Find some compressed air and a cardboard box.
Get the solder melted with a soldering iron. Use flux.
Point the back side of the PCB towards the cardboard box.
Heat the back side of the PCB with the soldering iron.
Apply the compressed air nozzle to the circuit side.
Remove the soldering iron and very quickly blow some compressed air
through the hold. The dross should land inside the cardboard box.

Also, pointed dental picks don't work well because there's too much
room for the solder in the hole with the tapered tip. Use a paper
clip or stainless piece of wire instead.


sounds like a job for Chip-Quik or other low-melting-point solder.

--
Jim Yanik
jyanik
at
localnet
dot com