[Elecraft] PLL problems on K2 #5061

[M. P. Haynes]

I posted a note last night and have also sent one to service @elecraft
but have not had a response from either.  I am missing the clock signal
SCK in the PLL circuitry.  It is also missing on the Control Board.  The
signal sit at level high with no pulses.  I am assuming that this signal
should be there at all times to clock the PLL corrections.  Would someone
with a working K2 or more knowledge of the circuitry give me a reply? 
The manual, though very good, does not go into great detail as to how the
circuit works, only what it does.

Thanks in advance.

Pat Haynes-K4BEH
(706) 692-0279