I typically use a solder sucker with the PCB in a holder so I canaccess both sides of the board. I can use the iron on one side and thesucker on the other.
You want to cant the sucker just a bit to avoid too much suction that∗may∗ suck the pad off the board. You also need to move the iron a bitjust before you push the sucker button. This allows air to blow throughthe hole.
I precede all the above by cutting the part lead and removing what'sleft on the board with a soldering iron and an odd flush cutter thathas a set of sharp edges. They look sort of like needle nose but thesharp edges minimize heat transfer and are good at grabbing short bitsof component lead.
Richard Brewster wrote:
I wanted to replace several resistors on a PC board recently and needed
more than just solder wick. My old heated desoldering iron gave up the
ghost. I ran out to Radio Shack and found this solder sucker tool that
I hadn't noticed before.
http://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F011%5F009%5F007%5F004&product%5Fid=64%2D2098
You have to be fast, heating the joint then quickly placing the sucker
over it and pressing the release. It comes in handy for cleaning out
the holes after you have removed the old leads. With this tool, plus
some solder wick, you are equipped.
-Richard Brewster ("man of cheap tools")
-- Regards,John BlacetBlacet Researchhttp://www.blacet.com