[Elecraft] K1 still with no output on 20m

[David L DuPuy]

Don,  I appreciate your help.  I have the two-band filter board.  40m is
doing just great. I just had a great QSO and good signal report on 40.

I pulled the filter board and checked every single capacitor in the Band 2
string, and all are the correct values.  One minor deviation is that C18
calls for a value of 2.7 or 3.0 pF, and the only supplied capacitor I had
close to that was 2.2 pF...  so I don't think that's the problem.

I tried to tell if the three relays were switching bands by placing my
finger on them, but I couldn't feel anything.  I hear a distinct click but
don't know if all three are firing.  The coil pins are hard to reach from
the top of the board, but maybe I'll try that next.  I also checked the
continuity of all of the inductors and I checked it on the next pc board
joint, i.e., not on the end of the wire.  Can't find any problems.  Sigh.
 I also examined all of the soldered connections carefully with a good
quality magnifying glass... can't find anything suspicious.  All three
relays read 250 ohms across the coils.

I am peaking the inductors by watching the S-meter on my FT-950, and I can
clearly see the signal peaking.  I'm sending the K1 to a dummy load with no
tuner.  The 20m band can now be set to indicate 5 watts, but there's
essentially no output.  I'm almost out of ideas!  Any suggestions are most
welcome.  David  AC4BN