[Elecraft] K2 receive problem

[Brian Mury]

I've just completed part 2 of my K2 RF board. I seem to have a problem
on receive. I get no audio, and the S meter is reading maximum. If I
select any of the CAL menu items or the ATU menu item, the receiver and
S meter work normally. As soon as I exit the menu, it goes back to no
audio and the S meter reading max. I can also receive between elements
when keying.

Anyone have any ideas what to check?
-- 
73, Brian
VE7NGR