KPA500 Heat Expansion Pop

Posted by Ken Wagner K3IU on Dec 15, 2011; 2:47pm
URL: http://elecraft.85.s1.nabble.com/KPA500-Heat-Expansion-Pop-tp7093999p7097341.html

G'morning, all:

In case anyone is keeping score, I shortened the 5/16"
screws that support the PA module on the Z bracket and the
Right Hand Panel, reinstalled them and now  no longer have
thermal expansion "clicks/ticks/pops" of any kind as the amp
heats up(tested to 65C) or cools off. I had previously tried
tightening just the Right Panel screws because they were the
easiest to get at and it really didn't help. Today I opened
up the amp and shortened the five on the Z bracket and now
all is nice and quiet.

73,
Ken Wagner K3IU
K3 #202
KPA500 #108
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