[Elecraft] K2 Problems

[Nick Henwood]

Looking for some help please. My K2 has developed some distortion on received signals and without warning  the internal speaker (and the external speaker jack) failed to work when turned on -- although headphones still work. I am about to check out the AF amp but wondered if my symptoms ring any bells with long-time K2 owners (I should add that my K2 was damaged by lightning static and these faults possibly spring from that time. 
73 Nick G3RWF