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Kx3 turns itself off

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Sean Cunningham

Kx3 turns itself off

Hi -

I having been trying to find QSOs on 20m this weekend on my kx3 and AX-1

I have tried both with fully charged NimH AA batteries with power set to 5W
and with an external battery with power set to 15w.

On a few occasions, my kx3 has turned itself off. I see a flash of
asterisks on the screen, then off it goes. I can turn it right back on
again.

It did it several times when on AA batteries, and less so when on the
external battery.

Has anyone seen this before?
--

Sean R. Cunningham
206-395-6650
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Don Wilhelm

Re: Kx3 turns itself off

Sean,

It sounds like the voltage being applied to the internal circuits of the
KX3 is dropping below 8 volts, which is the voltage at which it will
turn itself off.
Check inside for any loose connections (weak battery holder springs for
instance) or power wire terminals that may be partially unplugged.

If you can't locate anything, an email to support may give you some
other points to check.

73,
Don W3FPR

On 9/1/2019 11:49 AM, Sean Cunningham wrote:

> Hi -
>
> I having been trying to find QSOs on 20m this weekend on my kx3 and AX-1
>
> I have tried both with fully charged NimH AA batteries with power set to 5W
> and with an external battery with power set to 15w.
>
> On a few occasions, my kx3 has turned itself off. I see a flash of
> asterisks on the screen, then off it goes. I can turn it right back on
> again.
>
> It did it several times when on AA batteries, and less so when on the
> external battery.
>
> Has anyone seen this before?
>

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David Haines

Re: Kx3 turns itself off

Be sure you haven't set the timer to turn off the KX-3 in order to save
battery power.

david, KC1DNY

On 9/1/2019 12:34 PM, Don Wilhelm wrote:

> Sean,
>
> It sounds like the voltage being applied to the internal circuits of
> the KX3 is dropping below 8 volts, which is the voltage at which it
> will turn itself off.
> Check inside for any loose connections (weak battery holder springs
> for instance) or power wire terminals that may be partially unplugged.
>
> If you can't locate anything, an email to support may give you some
> other points to check.
>
> 73,
> Don W3FPR
>
> On 9/1/2019 11:49 AM, Sean Cunningham wrote:
>> Hi -
>>
>> I having been trying to find QSOs on 20m this weekend on my kx3 and AX-1
>>
>> I have tried both with fully charged NimH AA batteries with power set
>> to 5W
>> and with an external battery with power set to 15w.
>>
>> On a few occasions, my kx3 has turned itself off. I see a flash of
>> asterisks on the screen, then off it goes. I can turn it right back on
>> again.
>>
>> It did it several times when on AA batteries, and less so when on the
>> external battery.
>>
>> Has anyone seen this before?
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Sean Cunningham

Re: Kx3 turns itself off

In reply to this post by Don Wilhelm

Thanks, I'll check it out. I wondered if it could be the PA overheating and
did some testing. The PA.I temp got up to about 42C and it didn’t power
off, so I am guessing it is the low internal voltage issue you mentioned.

I will check with support if it continues.

On Sun, Sep 1, 2019 at 9:34 AM Don Wilhelm <[hidden email]> wrote:

> Sean,
>
> It sounds like the voltage being applied to the internal circuits of the
> KX3 is dropping below 8 volts, which is the voltage at which it will
> turn itself off.
> Check inside for any loose connections (weak battery holder springs for
> instance) or power wire terminals that may be partially unplugged.
>
> If you can't locate anything, an email to support may give you some
> other points to check.
>
> 73,
> Don W3FPR
>
> On 9/1/2019 11:49 AM, Sean Cunningham wrote:
> > Hi -
> >
> > I having been trying to find QSOs on 20m this weekend on my kx3 and AX-1
> >
> > I have tried both with fully charged NimH AA batteries with power set to
> 5W
> > and with an external battery with power set to 15w.
> >
> > On a few occasions, my kx3 has turned itself off. I see a flash of
> > asterisks on the screen, then off it goes. I can turn it right back on
> > again.
> >
> > It did it several times when on AA batteries, and less so when on the
> > external battery.
> >
> > Has anyone seen this before?
> >
>

--

Sean R. Cunningham
206-395-6650
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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