[Elecraft] K2 Front Panel Resistance Check Readings :(

[Don Wilhelm]

James,

I would not worry about the reading at J1 pin 15, but the others 
indicate a problem.

I do not know of your soldering skills, but it would seem that your 
solder is bleeding over enough to contact the ground plane that 
surrounds the connector and other solder pads on the board.

If you have a solder blob on any of the pins, that could be the problem. 
  Use solder wick to remove excess solder on the entire front panel 
board and reflow the solder using only a minimal amount of solder.
See the soldering tutorial on the Elecraft website to tell you what a 
good solder connection looks like.

73,
Don W3FPR

On 8/18/2019 1:48 PM, W0CD wrote:
> I'm running into a problem with the resistance checks for the K2 Front Panel
> Board. Specifically, I'm getting 0 reading from J1(1) - J1(7) and J1(12) -
> J1(14).
> 
> My readings:
> 
> PIN // Expected // Actual
> 
> U1(1)  //  25k-35k  //  29.4k (GOOD)
> U1(2)  //  25k-35k  //  29.5k (GOOD)
> U1(3)  //  40k-60k  //  50.4k (GOOD)
> U1(4)  //  >50k  //  12.8M (GOOD)
> U1(5)  //  15k-40k  //  24.6k (GOOD)
> U1(6-11)  //  0  //  0 (GOOD)
> U1(12)  //  9k-11k  //  9.8k (GOOD)
> U1(13-40)  //  >50k  //  >50k (GOOD)
> 
> J1(1)  //  >1M  //  0 (*BAD*)
> J1(2)  //  >1M  //  0 (*BAD*)
> J1(3)  //  >1M  //  0 (*BAD*)
> J1(4)  //  >1M  //  0 (*BAD*)
> J1(5)  //  >1M  //  0 (*BAD*)
> J1(6)  //  >50k  //  0 (*BAD*)
> J1(7)  //  >1M  //  0 (*BAD*)
> J1(8)  //  0  //  0 (GOOD)
> J1(9)  //  >50k  //  26.9M (GOOD)
> J1(10)  //  >50k  //  9.4M (GOOD)
> J1(11)  //  >50k  //  22.5M (GOOD)
> J1(12)  //  >50k  //  0 (*BAD*)
> J1(13)  //  >50k  //  0 (*BAD*)
> J1(14)  //  >50k  //  0 (*BAD*)
> J1(15)  //  10k-60k  //  71.6k (*HIGH*)
> J1(16)  //  25k-35k  //  28.5k (GOOD)
> J1(17)  //  25k-35k  //  28.3k (GOOD)
> J1(18)  //  15k-40k  //  23.7k (GOOD)
> J1(19)  //  1.5k-3.5k  //  2.5k (GOOD)
> J1(20)  //  0  //  0 (GOOD)
> 
> I did not install the SSB option yet as indicated in the manual.
> 
> For each J1 pin reading zero, I did conduct a continuity check between the
> pin and other parts on the board based on the diagram in Appendix B. All
> were successful. (Most were done between J1 pins and the empty rows holes to
> the right of the NB button).
> 
> I feel like I'm missing something very simple. Look at the diagram, PINS 1-7
> seem to work with voice functions (SSB). Should I expect to get values here
> if the option isn't installed?
> 
> Thanks from a first timer...
>