An insect in the tuning capacitor? Used to fry mice regularly in the
phaser at the AM BC station I worked at.
On 28 Mar 2015 23:41, George Allen wrote:
Hi
I just bought a new to me amplifier (Alpha 89) that I have run into a
problem. I was tuning up on 75m (Into a Dummy Load) and all
of a sudden I could smell something burning, and at the same time I lost all
output power. I was still getting a grid current reading
of roughly 35ma, not sure of the plate current as the meter was on the tune
scale.
I immediately shut the amplifier off and turned off the mains. I pulled the
cover off and did a good visual inspection for anything
that looks like it has been burnt or destroyed. I could find nothing that
looks suspect.
I put the cover back on and turned on the mains. I turned the amp back on
and it went through it's 3 minute wait cycle ok with
no issues. I put the amp into the opr posn and gave it a bit of RF and all
apears to be working fine, however something went
wrong previously as I couldsmell something burning.
I am sure someone must have experienced this before and could point me in
the right direction of where I should be looking.
Thanks in advance.
73, George
--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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