[Elecraft] K2 reference oscillator test

[wsm at amaonline.com]

Hi
I am building my second K2 and have a problem, which is no supprise,
considering my age (74) and lack of eyesight!
I'm doing the PLL reference oscillator range test. Alignment test
part 2.

When I tap band plus I get a reading of 12099.53 mhz, but when I tap
band minus, nothing changes, even if I hold band minus nothing
changes. the frequency stays on 12099.53

The band minus key works fine for changing bands, and if I hold band
minus it goes to the stor 9-0 menu. So this leads me to believe the
problem is not the switch, but somewhere on the control board.
Any ideas?
thanks
Scott N5SM