[Elecraft] K2 Alignment and Test, Part III

[Scheidler, Dale A.]

Don,

 

I did not see obvious solder connection problems and have started the
part 155 on page 7 in Troubleshooting.  R67/R68, R66/R69 and D9 were
visually checked.  As for checking component values in the RF detector,
I went to page 17 and am working on the table "RF Board".   Have
completed down through Q18.  My measurement is listed last.

 

D1  A  0  0      D2  A  8.0  7.8  D3  A8.0  7.8     D4  A  8.0  7.8
D5 A 0  0          D6 A 8.0  7.8        D7 A 0 0

      C  7.5  7.1       C7.5  7.1         C 7.5  7.15         C  7.5
7.16         C8.0  7.8           C7.5  7.2              C7.5  7.2

 

Q5 E 0.6, 0     Q6 B 1.0,0        Q7 B 0.6,0         Q8 B 0.6,0
Q10 S 1.6, 0     Q11 E 0.0,0         Q12 S 0.0,0

     B 1.3,0            C13.3,13.4        C13.4,13.4        C 13.4,13.4
G 8.1,0             B 0.6,0                G6.0,0

     C 12.4,13.4      E0.4,0              E0.0,0               E0.0,0
D1.6,4.7           C1.3,0                  D0.0,0

 

Q13 E0.6,0       Q16 E0.6,0      Q17S0.00,0       Q18G-1.0,0

       B1.3,0              B0.6,.6            G2.2,2.1
S2to3,1.9

       C7.5,0              C2.2,2.1          D2to3,2
D6.3,7.9

 

Thank you,

Dale, kc9cwb

 

Dale,

 

Go directly to troubleshooting to locate the source of the failure - you
may have to get into the Transmit Signal Tracing section of
Troubleshooting (look following the tables).  Once you locate the
failing stage, it will be easy to locate the failing component (we can
help at that point - right now all we can say is that 'It's broke' <G>).

 

All in all, you will most likely find a bad solder connection or
unsoldered connection, and the second most likely is that you will find
an incorrectly placed component.  So it may be a good idea to try a good
visual inspection first, you may get lucky and not have to wade through
the troubleshooting.

 

When you do get into the troubleshooting, go to section 155 Power output
low and follow the steps there - do not skip around (shotgunning), do
things in order and your progress will be much faster.

 

73,

Don W3FPR