[Elecraft] K2 just quit working.

[Geoffrey Mackenzie-Kennedy]

Gary,

If the same problem happens again, try removing the Control Board MCU U6 
from its socket, and then putting the IC back into its socket. I had the 
same problem twice, once a couple of years after building the K2 and again 
about a year later, although the power level control did not work either. 
The cause of my K2's problem in both instances was poor contact between one 
or more of U6's pins and the socket due to 'corrosion', a known design 
problem with the type of socket supplied. In the end I replaced the socket 
with turn pin (machined) type.

73,
Geoff
GM4ESD


Gary Krause <n7hts at bresnan.net> wrote on
Saturday, February 16, 2008 at 2:33 AM



>I took out the control board and checked the solder connections.  I re 
>flowed some of them that looked suspect.  My K2 is now up and running 
>again.
>
> Thanks,
> Gary, N7HTS
>
> Gary Krause wrote:
>> My K2 #6113 just quit working.  I was listening to the 40 meter band and 
>> all of a sudden no signal, and no audio.  The display works but, the 
>> frequency is frozen.  The only other control that works is the power 
>> level.  None of the buttons work and the frequency can't be changed. 
>> There are no error messages on power up and it powers up as normal with 
>> "Elecraft" and then goes to the frequency.
>> I'm getting ready to take out the control board and have a look.  Any 
>> help would be appreciated.
>>
>> I recently had a problem with SSB transmitting just stopping so, I may be 
>> related.
>>
>> Thanks,
>> Gary, N7HTS