[Elecraft] K1 Relays Not Working

[Richard Crispi]

Hi,
I'm in the process of building K1 #3224 and all was going well until this
evening.  I'm at the point in Chap. 7 Alignment and Test, Part 1 "Band-Pass
Filter Alignment" (pg. 40).  I was able to align B1 (40 meters) but when I
attempted to start B2 (30 meters) I realized that the relays were not
switching and I could still hear the 40 meter signals although the
frequency display showed the 30 meter frequency.  Everything else up to
this point seems to be working fine but no relays are switching; not on
power up or when I try to change bands.
All the resistance checks I did according to the manual were right on.  I
checked for misplaced components, shorts, unsoldered components, components
in backwards or in the wrong place on the filter board but everything
checks out OK.
I measured the voltages on U1 on the filter board and got the following:
Pin1     0v
Pin2     0v
Pin3     0.85v
Pin 4     5.94v
Pin 5-12    0v
Pin 13    5.5v
Pin 14    5.9v
Pin 15    2.2v
Pin 16    2.1v
Pin 17-18    0v
I was powering the radio with 12.9 volts.
According to the DC voltage table on pg 7 Appendix E the only voltages that
are off are the voltages on pins 15 and 16.  According to the filter board
schematic in Appendix B these two pins connect to Z1 the resonator.
Any ideas?
Regards,
Rich Crispi K1YRW

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