"Why is new solder better?"
Many years ago, my Ten-Tec Paragon PLL failed. A call to Ten-Tec tech informed
me that was a common problem, due to bad wave soldering on the PLL boards. He
recommended sucking all of the solder out and resoldering.
Thinking I was smarter than the Ten-Tec tech, I carefully resoldered each joint
on the board. Unfortunately, I still had the same problem. Defeated, I did as
told and removed the solder from each joint and resoldered. And, yes it worked
perfectly, and is still working.
I still do not understand why the resoldering did not work - but from this
point, I remove the old solder as Carl does.
73, Colin K7FM
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