[Elecraft] K2# 1068 stuck in keydown!

[Geoffrey Mackenzie-Kennedy]

Bill Allen wrote on Friday, April 21, 2006 2:31 AM

Hey gang,

I seem to have a K2 that is stuck in key down (i.e. xmit).  When I turn the
radio on all I get is the ELECrAFt message, that relays cycle normal, and
then a frequency.  No front panel controls work except the power knob and it
is obvious that I am transmitting and the finals start heating up.  What do
I need to check or do????   Any and all help appreciated!  Yes, I have
turned it off...

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I had a similar problem with the K2 getting stuck in receive, not transmit. 
In my case the cause was poor contact between one or more pins of the 
Control Board MCU U6 and its socket, perhaps due to corrosion. Removing U6 
and plugging it back into its socket cured the problem. Later I changed the 
socket to a turned pin type (not fun) for peace of mind!

73,
Geoff
GM4ESD