KIO2 install and volt meter problem

[James Kern]

I was just putting the finishing touches on installing the KIO2 in my
K2 when I encountered a problem during testing. I was at the part of
testing the change in current when pulling the KIO2 off and on. When I
pulled the KIO2 off and powered the radio back on, I got a 'Low Batt'
message and the voltage was reading 0.00.. this is with the battery
only in it. I tried plugging the KIO2 back in and it still reads 0.00.

It looks like everything else functions normally. I noticed the radio
on receive was drawing .30 on the scale (it still can read current
draw). I have the Auto Tuner, the Noise Blanker, the Audio Filter, the
160 meter band option and the ssb adapter (in addition to the KIO2).
Is that an acceptable amount of current draw when running it with the
display on nite mode (backlit)?

Any ideas where I should start looking to repair the built-in volt
meter?

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[JEAN-FRANCOIS MENARD-3]

Hi,

You should look around U3 on the control board, U3 maybe defective,  
Also look at the voltage chart in the manual and check for R9 and R10  
on the control board. Also check that you do not change the position  
of jumper P7 to "EXT" position instead of "INT".

Le 05-08-14 à 02:35, [hidden email] a écrit :

> I was just putting the finishing touches on installing the KIO2 in my
> K2 when I encountered a problem during testing. I was at the part of
> testing the change in current when pulling the KIO2 off and on. When I
> pulled the KIO2 off and powered the radio back on, I got a 'Low Batt'
> message and the voltage was reading 0.00.. this is with the battery
> only in it. I tried plugging the KIO2 back in and it still reads 0.00.
>
> It looks like everything else functions normally. I noticed the radio
> on receive was drawing .30 on the scale (it still can read current
> draw). I have the Auto Tuner, the Noise Blanker, the Audio Filter, the
> 160 meter band option and the ssb adapter (in addition to the KIO2).
> Is that an acceptable amount of current draw when running it with the
> display on nite mode (backlit)?
>
> Any ideas where I should start looking to repair the built-in volt
> meter?
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
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>
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> Elecraft web page: http://www.elecraft.com
>

======

Jean-François Ménard / VA2VYZ

======


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[Jim Younce]

James:

Look at the control board and switch the voltmeter switch S1 back to the INT
position.  Or if you have a newer unit you may have accidentally knocked off
the jumper on the voltmeter connector P7 - The jumper has to be set to the
INT positon.  Fear not this is a common occurrence...LOL  The S! or P7 are
located in the upper left hand corner of the control board when viewed form
the component side.

73

Jim Younce K4ZM

James Said:

I was just putting the finishing touches on installing the KIO2 in my
K2 when I encountered a problem during testing. I was at the part of
testing the change in current when pulling the KIO2 off and on. When I
pulled the KIO2 off and powered the radio back on, I got a 'Low Batt'
message and the voltage was reading 0.00.. this is with the battery
only in it. I tried plugging the KIO2 back in and it still reads 0.00.


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[James Kern]

Everyone's hunches were correct! It was the little slider switch on
the control board. I must have bumped it when I was unplugging the
cables. I switched it back to '12V' and everything worked fine. I even
found it in the manual later on (Go figure.. looked at the directions
hihi).  Thanks everyonen for your help. Ah yes, I forgot to mention my
K2 vintage, it's S/N 2735.

So far I don't have communications between the radio and the computer,
but I have to check the serial cable and I'll have to double-check the
KIO2. Otherwise everything else looks good.

----- Original Message -----
From: Tom Hammond <[hidden email]>
Date: Sunday, August 14, 2005 10:23 am
Subject: Re: [Elecraft] KIO2 install and volt meter problem

> James:
>
> Check the mini-slide switch on the CONTROL BOARD. Be sure it's set
> to 12V
> and NOT to EXT (maybe it's "INT").
>
> 73,
>
> Tom   N0SS
>
> At 01:35 AM 8/14/2005, you wrote:
> >I was just putting the finishing touches on installing the KIO2
> in my
> >K2 when I encountered a problem during testing. I was at the part of
> >testing the change in current when pulling the KIO2 off and on.
> When I
> >pulled the KIO2 off and powered the radio back on, I got a 'Low

Batt'
> >message and the voltage was reading 0.00.. this is with the battery
> >only in it. I tried plugging the KIO2 back in and it still reads
> 0.00.>
> >It looks like everything else functions normally. I noticed the
radio
> >on receive was drawing .30 on the scale (it still can read current
> >draw). I have the Auto Tuner, the Noise Blanker, the Audio
> Filter, the
> >160 meter band option and the ssb adapter (in addition to the KIO2).
> >Is that an acceptable amount of current draw when running it with
the

> >display on nite mode (backlit)?
> >
> >Any ideas where I should start looking to repair the built-in volt
> >meter?
> >
> >_______________________________________________
> >Elecraft mailing list
> >Post to: [hidden email]
> >You must be a subscriber to post to the list.
> >Subscriber Info (Addr. Change, sub, unsub etc.):
> >  http://mailman.qth.net/mailman/listinfo/elecraft
> >
> >Help: http://mailman.qth.net/subscribers.htm
> >Elecraft web page: http://www.elecraft.com
>
>

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[Tom McCulloch]

Hi all,
  Well I guess just about everyone has bumped into the slider switch and gotten the "battery low" message.

  I'm just curious as what the purpose of that slider is?  In other words, when is it appropriate to to switch it over?

Inquiring minds want to know!

Tnx
Tom
WB2QDG
K2 1103


 -------------- Original message ----------------------
From: [hidden email]

> Everyone's hunches were correct! It was the little slider switch on
> the control board. I must have bumped it when I was unplugging the
> cables. I switched it back to '12V' and everything worked fine. I even
> found it in the manual later on (Go figure.. looked at the directions
> hihi).  Thanks everyonen for your help. Ah yes, I forgot to mention my
> K2 vintage, it's S/N 2735.
>
> So far I don't have communications between the radio and the computer,
> but I have to check the serial cable and I'll have to double-check the
> KIO2. Otherwise everything else looks good.
>
> ----- Original Message -----
> From: Tom Hammond <[hidden email]>
> Date: Sunday, August 14, 2005 10:23 am
> Subject: Re: [Elecraft] KIO2 install and volt meter problem
>
> > James:
> >
> > Check the mini-slide switch on the CONTROL BOARD. Be sure it's set
> > to 12V
> > and NOT to EXT (maybe it's "INT").
> >
> > 73,
> >
> > Tom   N0SS
> >
> > At 01:35 AM 8/14/2005, you wrote:
> > >I was just putting the finishing touches on installing the KIO2
> > in my
> > >K2 when I encountered a problem during testing. I was at the part of
> > >testing the change in current when pulling the KIO2 off and on.
> > When I
> > >pulled the KIO2 off and powered the radio back on, I got a 'Low
> Batt'
> > >message and the voltage was reading 0.00.. this is with the battery
> > >only in it. I tried plugging the KIO2 back in and it still reads
> > 0.00.>
> > >It looks like everything else functions normally. I noticed the
> radio
> > >on receive was drawing .30 on the scale (it still can read current
> > >draw). I have the Auto Tuner, the Noise Blanker, the Audio
> > Filter, the
> > >160 meter band option and the ssb adapter (in addition to the KIO2).
> > >Is that an acceptable amount of current draw when running it with
> the
> > >display on nite mode (backlit)?
> > >
> > >Any ideas where I should start looking to repair the built-in volt
> > >meter?
> > >
> > >_______________________________________________
> > >Elecraft mailing list
> > >Post to: [hidden email]
> > >You must be a subscriber to post to the list.
> > >Subscriber Info (Addr. Change, sub, unsub etc.):
> > >  http://mailman.qth.net/mailman/listinfo/elecraft
> > >
> > >Help: http://mailman.qth.net/subscribers.htm
> > >Elecraft web page: http://www.elecraft.com
> >
> >
>
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>
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[Vic K2VCO]

[hidden email] wrote:
> Hi all, Well I guess just about everyone has bumped into the slider
> switch and gotten the "battery low" message.
>
> I'm just curious as what the purpose of that slider is?  In other
> words, when is it appropriate to to switch it over?

It was intended to allow you to use the built-in voltmeter to make
voltage measurements with a probe throughout the K2.  Theoretically you
wouldn't even need a DVM to build and adjust a K2!

However, so many people bumped the switch that later K2s have a jumper
instead!

--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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