[Elecraft] K2 -- Erratic behaviour. Display changes and locks up

[Geoffrey Mackenzie-Kennedy]

Colin,

My K2 #3255 shut down one day when about 2-1/2 years old leaving the display 
showing the frequency last used, but none of the front panel controls 
functioning except the power ON-OFF switch. After an overnight rest all was 
well. Eventually I found the problem to be caused by the socket of the 
Control Board MCU, perhaps a bit of corrosion, and later I replaced the 
socket with a turned pin type for a lasting solution.

73,
Geoff
GM4ESD

C WEAVING  cweaving at btinternet.com wrote:

>I am a new owner of an early K2  with Seriel No 638. Initialy rig worked 
>fine, but now a random fault is occuring .
>
>  I hear a couple of relay clicks (sometimes more) and the display rapidly 
> changes and when stops,  the message  E137 0.26  or E138 0.26 is usualy 
> given. On one occasion the display was left with St L 071. On other 
> occasionns the display just appears random. Are these error codes, and if 
> so could anyone give me their meaning.  The push buttons are 
> non-functional and I can only get back to operation by switching OFF , and 
> then ON.
>
>  To me,  the symptoms are similar to my early computer experiences, when 
> the computer went south.  Any recommendations for trouble shooting would 
> be appreciated.
>
>  The last point is that the problem is chronic during warm up. After 15 to 
> 20 mins the problem is either gone or significantly reduced in magnitude.
>
>  Thank you, Colin M3WCK