None of us are immune to ageing effects.  

matt W6NIA

On Tue, 01 Jan 2013 01:28:39 -0600, you wrote:

>I found the problem... There is a jumper inside the preamp that needs to be
>removed when used with the K3 and the accessory connector.  I thought I
>removed it when it arrived, but I guess my age is starting to show...
>
>
>Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
>
>Owner - Operator
>Big Signal Ranch
>Staunton, Illinois
>
>email:  b...@wjschmidt.com
>
>
>-----Original Message-----
>From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain
>macdonnell - N6ML
>Sent: Monday, December 31, 2012 4:04 PM
>To: b...@wjschmidt.com
>Cc: Elecraft Mailing List
>Subject: Re: [Elecraft] K3 won't shut off?
>
>I would check inside the DE15 connector - maybe something is shorting pin 8
>to ground inside there.
>
>73,
>
>    ~iain / N6ML
>
>
>On Mon, Dec 31, 2012 at 1:49 PM, Dr. William J. Schmidt, II
><b...@wjschmidt.com> wrote:
>> Yes, it works fine with the preamp completely removed...
>>
>>
>> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
>>
>> Owner - Operator
>> Big Signal Ranch
>> Staunton, Illinois
>>
>> email:  b...@wjschmidt.com
>>
>> -----Original Message-----
>> From: dse...@dseven.org [mailto:dse...@dseven.org] On Behalf Of iain 
>> macdonnell - N6ML
>> Sent: Monday, December 31, 2012 3:18 PM
>> To: b...@wjschmidt.com
>> Cc: Elecraft Mailing List
>> Subject: Re: [Elecraft] K3 won't shut off?
>>
>> Does the K3 power off fully if you disconnect the ACC connector? It 
>> sounds like something is pulling pin 8 down....
>>
>> 73,
>>
>>     ~iain / N6ML
>>
>>
>> On Mon, Dec 31, 2012 at 12:20 PM, Dr. William J. Schmidt, II 
>> <b...@wjschmidt.com> wrote:
>>> So I connected my PR6 - 6 meter preamp to my K3 for the first time 
>>> last week and work some DX.  At the end of the day I go to shut the 
>>> radio off and the display goes blank (hear the relays disengage) but 
>>> all of the LEDs are still lit on the radio. and it will not turn back 
>>> on except to cycle the power on the power supply.  I discuss this 
>>> with a friend and he reminds me that there was a MOD for K3's to put 
>>> a diode on the KPA3 board for the 12V sense circuit, but after 
>>> looking at the MOD sheet on the Elecraft website, it says that this 
>>> MOD was incorporated into the radio as of 2009 (my radio less than a 
>>> year old).  I remove the fans to check for the 1N4148 on P68A of the 
>>> KPA3 and it's not there.  So two questions. Has anyone else 
>>> experienced this phenomena, and does anyone know. was that diode 
>>> actually incorporated
>> into the radio on the board somewhere else and mine is just bad?
>>>
>>>
>>>
>>>
>>>
>>> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ/ PJ4HZ
>>>
>>>
>>>
>>> Owner - Operator
>>>
>>> Big Signal Ranch
>>>
>>> Staunton, Illinois
>>>
>>>
>>>
>>> email:   <mailto:b...@wjschmidt.com> b...@wjschmidt.com
>>>
>>>
>>>
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>>
>
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