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

[William C. Johnson via Elecraft]

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