[Elecraft] K2 VFO Freq Display Stuck (again)

[TI2/NA7U]

Back in April I had a problem with the frequency not moving (just final digit
flickering) and that turned out to be a broken wire to the encoder. Again
the problem has cropped up with identical outward symptoms. I checked the
encoder wires again, all are fine.

Here are some measurements that were asked for last time. The voltage
measurements shown are only ones that differ significantly from those listed
on pg. 16 of the K2 manual, Appendix E. The manual reference voltage is in
parentheses.

U3: pin3 4.8 (0.8), pin 7 3.5 (2.0), pin 13 4.7 (0.2), pin 14 .1 (3.1), pin
15 4.1 (0.8), pin 18 .08 (3.6). The manual notes that all the voltages on
these pins may vary.

Resistance measured at each encoder pin with the FP board removed:
Pin 1 24K, Pin 2 106K, Pin3 106K, Pin 4 29K

Can someone help me troubleshoot this? How do I tell if the encoder itself
is bad?

vy 73,

Casey, TI2/NA7U

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