[Elecraft] Freqency Display K-2

[hemiller@toast.net]

If this already made it to the list, my apologies=2E  I sent a copy from my work QTH, and according to the e-mail FAQs, it was probably blocked bcause my work QTH e-mail address is not suscribed to the list=2E  Hence, this post=2E ;>=
)

Hi,

was wondering if anyone has come across this problem:

I finished the alignment part 1of the K-2 procedures, and preceded to build up the RF board as instructed=2E  All tests in alignment one went perfectly, including the rf probe check=2E  I finished the RF board up to alignment part 2, and double checked everything (that doesn't absolutely guarantee mistake free, but it helps)=2E  When I applied power to the rig, everything went as expected (no errors, smoke=2E=2E=2Eetc)=2E  I attached the probe to TP3 and went to "CAL Fctr"=2E  The display was all zeros=2E=2E=2Eno fluctuation=2E  I measured the frequency with an external frequency counter, and it showed 12=2E103MHZ  at TP3 which is in spec=2E  I checked the probe with a meter, and there seems to be continuity from one side of the capacitor to the tip, and the other side of the capacitor to the 2 pin connector=2E  Across the capacitor, it is open, but I expected that, as caps block DC=
=2E

I went further in the alignment, and checked the band voltages (80-10mtrs) at R30, and those also prove to be in spec=2E  I checked the frequency at TP1(external frequency meter), and saw 8=2E4MHZ when I was directed to look at the value=2E  So=2E=2E=2E=2E=2E=2E=2E=2Eit appears like the internal frequency meter display is now inoperative, or something has happened to the probe since alignment part 1=2E  I did heat the shrink tubing before test 1, but shrunk it a little more after=2E  The tubing did get warm, but I don't think it was warm enough to damage the capacitor (not sure how I could check if the capacitor was open=2E=2E=2Ebroken lead inside)=2E  I removed the heat shrink to check continuity of the probe=2E  If anyone could shed some light on this, I would appreciate it a bunch=2E  I am going to aassume I have a bad probe to start=2E  I can't do anything further without the internal probe working=2E  I'll probably head to "rad shack" to buy another capacitor and rebuild the probe=2E  I don't think they carry caps at 10pf though=2E  Would an =2E01uF or =2E001uF work?  Thanks in advance=
=2E

Regards

H=2E Ed Miller
AA5JO