Posted by
Dave, G4AON on
Sep 22, 2009; 7:53am
URL: http://elecraft.85.s1.nabble.com/K3-IF-output-buffer-gain-modification-tp3690284p3691048.html
I find removing surface mount resistors, at least on the underside of
the K3 main board, quite simple. It's easier than removing wire ended
resistors from plated through holes! Remove the bulk of the solder from
each end of the component with solder wick, the heat from the iron will
often have migrated through the component by this time and it will slide
away from the pads, if not dab the other end. I really do not like
cutting surface mount resistors and capacitors with side cutters as a
means of removing them.
Getting the replacement component nice and square on the board is harder
than removing the old one as the heat from soldering the second end can
be enough to cause the component to shift slightly.
73 Dave, G4AON
K3/100 #80 with all the published mods.
----------------------------
Ian GM3SEK wrote:
>/It's an easy mod. Just remove one surface-mount resistor (cut it in
/>/half with side cutters
/
That is a very risky technique - cutters apply a very large and
uncontrolled force which can easily tear up the solder pads.
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