[Elecraft] K2 PLL Reference Oscillator failure

[sbm at ottix.net]

Hi all,
 	I'm part way done building #6197, arriving at the Alignment and 
Test, Part II of the RF aasembly on page 63 (Rev G of the K2 manual).

 	At step 3, I plug-in the probe as described and enter CAL FCTR to 
enable the on-board counter.  I'm getting a reading of 189.52, rapidly 
changing by around +/- 0.30.  This doesn't look anything at all like what 
I should be expecting according to step 3.

 	I have pulled the assembly apart, retraced parts placement and 
connections, and aside from correcting RFC14's winding (just one turn of 
wire too many), I've not gotten any change in counter reading.  I also 
re-did the thermistor board just in case, as it was sitting a bit askew 
and almost making contact with RFC14's toroid core.  Power up and test 
yielded the same result.

 	All else up to this point, including the 4MHz calibration (using a 
Sony IC-SW7600G for zero-beat), checks out fine.  Also, as posted in a 
very recent message referring to a PLL range test filaure, I have 
checked RP2, D16, D17 and R19 for proper values and orientation, as well 
as for cold solder joints.

 	The silver lining in all of this is that I did try the first few 
steps of the BFO test on page 65 and that turned out perfect.

 	Otherwise, I'm pretty much stuck at this point as to where to go from 
here.  Any pointers appreciated.

Thanks,

Will