Gerhard,
I have found the KPA100 is more difficult to solder than other Elecraft
kits, but I believe it is bacause that PC board uses thicker copper than
the other kits and is especially noticable when soldering to a grounded pad.
I increase the temperature on my soldering station to 750 to 800 degrees F.
(400 to 430 degrees C.) and have no problem. The KPA100 manual states that
a low wattage 800 degree F. soldering iron is required.
Try increasing the temperature of your iron. Judging by your photo, I can
definitely state that your iron is not hot enough, and the pads that give
you the most trouble are the ground points.
73,
Don W3FPR
----- Original Message -----
I am just in the process of building my KPA100. And I discover more and more
solder points on the PCB where the solder is not accepted. Scraping the pads
a bit helps a bit but I don't think this is a solution.
Some details. I don't know where in the process it started but right now I'm
on page 15 soldering the capacitors. And it's nearly every third hole that
doesn't work. The solder sticks to the leads or the iron.
I use the same iron and solder as with the other 10 PCBs of elecraft that I
have built.
I contacted elecraft about this issue but I wanted to ask if others have
this problem too? What can I do?
73
Gerhard Schwanz
DH3FAW
mailto:[EMAIL PROTECTED]
http://www.gs-personal.de
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