[Elecraft] Rear Panel Mike Jack

[Jim McCook]

Dennis, I had the same problem with the line out jack.  Spraying contact 
cleaner on a plug and working it around didn't help; one channel was 
open.  You need to replace the whole board unless you want a huge task.  
Find someone who has upgraded his K-3 to a K-3s.  He will probably have 
the old board to give you.  It's the KIO3 I/O audio module.  Most likely 
someone seeing this message can help.  Jim W6YA