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Re: [Amps] Blown anode choke in TL-922

To: <amps@contesting.com>
Subject: Re: [Amps] Blown anode choke in TL-922
From: Rick Stealey <rstealey@hotmail.com>
Date: Sun, 24 Apr 2011 17:08:37 +0000
List-post: <amps@contesting.com">mailto:amps@contesting.com>


>
> The slow roast is indicative of a resonance that is far enough away that it
> doesnt instantly blow apart.

Carl, 
By this you mean when he is operating on a band near where the choke is 
resonant 
the choke is taking some of the RF and heating up?  Makes sense.
But how do you account for the fact that it popped when he wasn't even on the 
air?
The amp was just idling, not even keyed up, and he hit the LV/HV switch.  Where 
was the path for B+ to ground?
I'm thinking he has two issues, possibly.  One related to the RF choke and 
another
which could be a gassy 3-500 or a failing coupling cap.

Rick  K2XT

                                          
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