[Elecraft] K2 building problem

[Ed Findley]

Trying to put together K2 #5278 I am at the point for alignment and test
Part 1. Powers up fine and shows 7100.00 c and display shows correct voltage
and amperage. But when I test the optical encoder by turning the vfo knob it
moves from 7100.00 c to 7100.01 c and then upon further turning moves back
to 7100.00 c. Does the same thing no matter which way the knob is turned.
Rechecked components and solder joint without finding anything.  I may just
be too old for this solid state stuff.  I think the last thing I built was a
HW 101.  I did not try to go on to the calibration part as it may not be
worthwhile with the encoder not working correctly.

Appreciate any suggestions.

K2 #5278

Ed Findley  WB2KUI