[Elecraft] K2 stops keying

[Jack Brindle]

I agree with Don (as almost always :-) ). The other thing that comes  
to mind is to ask if you have remembered to re-tighten the screws  
securing the PA transistors to the heat sink. This sounds like it  
could be a failure due to overheating PA transistors. Over that  
period of time, with a loose heat sink, this situation could come up...

Now its time for the contest...

On Feb 3, 2007, at 3:40 PM, Don Wilhelm wrote:

> Rich,
>
> Anytime you see the Elecraft message in the display it means that  
> somehow
> the voltage supplied to the K2 has dropped significantly.
>
> Check your power supply wiring.  Use 16 guage wire or larger and be  
> certain
> all the connections are tight and the connector that plugs into the  
> K2 is
> properly soldered to the wires.
>
> There are a few components in the K2 that could be at fault - the  
> series
> diode or resettable fuse in the +12 volt line are the prime  
> suspects, but
> they seldom fail themselves - virtually all problems of that sort  
> can be
> traced to a bad solder connection in the power wiring.
>
> 73,
> Don W3FPR
>
>> -----Original Message-----
>>
>> I have a weird problem. I'm running my K2 about 10 watts into an
>> amplifier.
>> When I am in a ragchew QSO on CW, the K2 stops keying after about  
>> 60-90
>> seconds. In other words it doesn't go into TX at all.  I get an  
>> elecraft
>> message on the display and my Split operation disappears  After I  
>> wait for
>> about 15 seconds turn split again , the K2 works fine until the  
>> next 90
>> seconds.  Where do I look ?   Same thing happens if I run the K2  
>> barefoot,
>> 10 watts without the amp.
>>
>> Thanks for any reply
>> Rich W3ACO S/N 4023.
>>
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-Jack Brindle, W6FB
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