Steve,

Perhaps RF may have gotten loose in the amp and caused a capacitor to 
partially break down, and the final failure just happened later.

Steve

----- Original Message ----- 
From: "Steve Forst" <[log in to unmask]>
To: <[log in to unmask]>
Sent: April 16, 2015 17:20
Subject: Amp parisitic board failure


> Just curious if someone more knowledgeable  than me might know what
> happened to my  amp.
>
> Sent my AL-80B to Ameritron for service after hearing an arcing
> followed by a burning smell.
>
> Just got an e-mail that  a cap on the parasitic board had failed and
> board was replaced.  $57 plus shipping.
>
> Just wondering what might have caused this.    As I recall, I heard the
> arc when I switched from standby to operate, and  would smell the
> burning  odor anytime RF was  put to the amp.
>
> Amp is 6 years old.  Just one of those things?    Maybe just a bad
> component?
>
> Anyone run into something like this before?    I know there could be a
> number of reasons, or maybe no reason, but I'm just curious.
>
> 73, Steve KW3A
>