K2 with no TX or RX help please

[Denis Jackson-2]

Hi Folks,

My K2/10 hasn't been used for a few months.  It was working fine last time
I used it.  I turned it on a few days ago with the intention of taking it
out portable and it's developed a problem.  The display and all the
controls seem to do what they usually do, in that frequency changes,
antennas switch, volume goes up and down, bands and modes change etc. but
it will neither transmit or receive.

I would be very greatful if someone could give me a heads up on where to
look first!  I built this quite a few years ago and my memory of it's
"internals" has faded considerably.

Many thanks and best wishes from Wales.

Denis MW0CBC / GW8OQV

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[Don Wilhelm-4]

Denis,

 From that information, all I can say with certainty is that the problem
is somewhere inside the enclosure :-) .

My first guess is that one or more of the connectors on the option
modules has developed a bit of oxidation during its period of non-use.  
I would remove and re-insert all the option modules.  If you have the
KAF2 or KDSP2, I would start with that because it is directly in the
audio path, then proceed to the KSB2, then the KNB2, then K60XV if
installed and lastly the K160RX.

If that does not help, please give a more complete description of what
you hear on RX - for example, do you hear receiver noise if you turn the
AF gain up?  Does the noise level change with the preamp and attenuator
in and out?

73,
Don W3FPR

On 6/27/2013 3:45 PM, [hidden email] wrote:

> Hi Folks,
>
> My K2/10 hasn't been used for a few months.  It was working fine last time
> I used it.  I turned it on a few days ago with the intention of taking it
> out portable and it's developed a problem.  The display and all the
> controls seem to do what they usually do, in that frequency changes,
> antennas switch, volume goes up and down, bands and modes change etc. but
> it will neither transmit or receive.
>
> I would be very greatful if someone could give me a heads up on where to
> look first!  I built this quite a few years ago and my memory of it's
> "internals" has faded considerably.
>
> Many thanks and best wishes from Wales.
>

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Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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[Denis Jackson-2]

Hi Don,

Thanks for this. You were correct on two counts. Working through your
list, I got as far as the KSB2 and, having subject that to a good wiggle,
everything is working again.

Many thanks for your help...I won't forget that the connectors can cause
problems and will check this kind of thing automatically next time I have
a problem.

Best wishes.....and yes, it was inside the box ;-)

Denis MW0CBC / GW8OQV

> Denis,
>
>  From that information, all I can say with certainty is that the problem
> is somewhere inside the enclosure :-) .
>
> My first guess is that one or more of the connectors on the option
> modules has developed a bit of oxidation during its period of non-use.
> I would remove and re-insert all the option modules.  If you have the
> KAF2 or KDSP2, I would start with that because it is directly in the
> audio path, then proceed to the KSB2, then the KNB2, then K60XV if
> installed and lastly the K160RX.
>
> If that does not help, please give a more complete description of what
> you hear on RX - for example, do you hear receiver noise if you turn the
> AF gain up?  Does the noise level change with the preamp and attenuator
> in and out?
>
> 73,
> Don W3FPR
>
> On 6/27/2013 3:45 PM, [hidden email] wrote:
>> Hi Folks,
>>
>> My K2/10 hasn't been used for a few months.  It was working fine last
>> time
>> I used it.  I turned it on a few days ago with the intention of taking
>> it
>> out portable and it's developed a problem.  The display and all the
>> controls seem to do what they usually do, in that frequency changes,
>> antennas switch, volume goes up and down, bands and modes change etc.
>> but
>> it will neither transmit or receive.
>>
>> I would be very greatful if someone could give me a heads up on where to
>> look first!  I built this quite a few years ago and my memory of it's
>> "internals" has faded considerably.
>>
>> Many thanks and best wishes from Wales.
>>
>
>

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Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html