[Elecraft] K3 won't shut off?

[Fred Smith]

I got in late on this thread but are you refuting to the PR6 preamp? That
was connected and not letting the K3 shut down because of it being connected
to the aux 12v connector on the rear of the K3?

If this was what was happening I just installed a PR6 on an ser # 5299 and
had no problems I "did not" do anything with a jumper inside. Even though I
don't have that problem do I need to do this?

73,
Fred/N0AZZ

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Dr. William J.
Schmidt, II
Sent: Tuesday, January 01, 2013 1:29 AM
To: 'iain macdonnell - N6ML'
Cc: 'Elecraft Mailing List'
Subject: Re: [Elecraft] K3 won't shut off?

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:  bill at wjschmidt.com


-----Original Message-----
From: dseven at dseven.org [mailto:dseven at dseven.org] On Behalf Of iain
macdonnell - N6ML
Sent: Monday, December 31, 2012 4:04 PM
To: bill at 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
<bill at 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:  bill at wjschmidt.com
>
> -----Original Message-----
> From: dseven at dseven.org [mailto:dseven at dseven.org] On Behalf Of iain 
> macdonnell - N6ML
> Sent: Monday, December 31, 2012 3:18 PM
> To: bill at 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 
> <bill at 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:bill at wjschmidt.com> bill at wjschmidt.com
>>
>>
>>
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