[Elecraft] K3 speaker amp chip bites the dust again - CORRECTION!

[Nr4c]

I'm not sure where it is accessed but there is an audio limiter to prevent this from happening. Helps when AGC is OFF. 

Sent from my iPhone
...nr4c. bill


> On Jul 2, 2014, at 2:55 PM, "William C. Johnson via Elecraft" <elecraft at mailman.qth.net> wrote:
> 
> Wow Dave you spooked me. I just completed the protection install before leaving Yuma for Astoria. I am glad to hear the install was not in vain. hi hi
> 
> Bill J K7BRR Yuma
>  
> Message: 13
> Date: Tue, 1 Jul 2014 17:53:59 -0700
> From: "Dave Hachadorian" <k6ll.dave at gmail.com>
> To: "Reflector Elecraft" <elecraft at mailman.qth.net>
> Subject: [Elecraft] K3 speaker amp chip bites the dust again -
>     CORRECTION!
> Message-ID: <058BEFA1FA9E42939B8ED88C253D8CDA at Toshiba>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>     reply-type=response
> 
> My posting this morning about blowing the speaker amp chip was in 
> error.  Further investigation reveals that I actually blew out 
> the K3's internal speaker.  Ohmmeter measurement at the speaker 
> terminals shows that the coil is wide open.  This is really good 
> news, because the speaker is easily replaceable in the field.
> 
> It's also good news because it points out the efficacy of the 
> E85056 protection mod.
> 
> My apologies for making a wrong assumption.  The symptoms were 
> exactly the same as the two previous failures of the speaker amp.
> 
> Dave Hachadorian, K6LL
> Yuma, AZ
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