[Elecraft] [K3] Speaker output amp kaput

[Dave Hachadorian]

Go to the Elecraft mail archives and search for the thread "K3 
speaker amp - sub side inop."

It's a tricky part to replace, but it's $5 if you do it yourself, 
vs. about $140 (shipping, parts, labor) if Elecraft does it.

Another option is to just leave it dead, which I think I will do 
next time it blows up. I don't know why it is so delicate. A good 
rule is never turn off the agc with speaker connected.

Dave Hachadorian, K6LL
Yuma, AZ





--------------------------------------------------
From: "Bill VanAlstyne W5WVO" <w5wvo at cybermesa.net>
Sent: Wednesday, October 06, 2010 11:19 AM
To: "[Elecraft]" <elecraft at mailman.qth.net>
Subject: [Elecraft] [K3] Speaker output amp kaput

> I recently fried (I believe) the speaker amplifier in my K3, 
> apparently by
> just turning off the radio and turning it back on too quickly. 
> Perhaps the
> fact that the AGC was disabled at the time might have had 
> something to do
> with this, though that is just a guess. I accidentally turned 
> off the K3 by
> pushing the POWER button by mistake, and, cursing my 
> klutziness, immediately
> pushed the button again to turn it back on, as I was in the 
> middle of a QSO.
> The radio came back on -- but sans speaker. It has been dead 
> ever since.
> Configuration settings have been double-checked. It's not a 
> catastrophe for
> me, because I normally use headphones anyway, but I'd like to 
> get it fixed.
>
> Since I'm not reading every post on the list these days, I have 
> probably
> missed something about this, because I dimly recall seeing some 
> subject
> headings about the speaker amplifier. I didn't read these. Is 
> this a
> user-replaceable part? If so, what is involved?
>
> And if this part is blowing up regularly, why is it so fragile? 
> Is there
> something that can be done to better protect it?
>
> My K3 was recently (couple months ago) updated at the factory 
> with all
> applicable mods.
>
> Bill W5WVO
> New Mexico
>
>
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