[Elecraft] Alignment and Test, Part II

[G3VVT at aol.com]

Hi Peter,
 
The significant voltage could be the PLL chip PDOUT, U4 pin13.  Check for 
shorts on this pin that would give a zero reading. Not sure if the PLL  chip 
itself would support such a low voltage whilst working normally.  Have seen 
reported of odd effects with RFC15 the DC feed to the PLL  chip U4 pin16, so check 
for actual DC continuity with this component.
 
What you do not appear to state and this is very important, is the VCO  
oscillating or not?.
 
Checks with the K2 frequency counter at TP1 would at least help as an  
initial test. The frequency read depends on the band in use and reference to the  
table at the beginning of Appendix B gives the range of VCO frequencies to be  
expected. Tests with the RF probe/DMM at TP1 should give a reading  between 
600mV and 750mV according to the Elecraft trouble shooting guide.
 
Bob, G3VVT