[Elecraft] K3 - temporary switch lockup

[Dave Hachadorian]

Just before today's practice session for CQWW RTTY, the front 
panel switches on my K3 s/n 993 stopped working.  I first noticed 
that the xmit/tune button didn't work.  Then I found none of the 
other buttons would work either.

I turned the rig off, and back on again.  The POWER switch 
worked, but none of the other buttons worked.

I then updated all the firmware, using the newest K3 Utility.  I 
was only one or two FW revisions behind.

The buttons still wouldn't work.

I tried to do a switch test, but the menu/config button didn't 
work either, so I couldn't get into config.

I saved the configuration.

I tried to do an EE INIT, but the shift/lo button wasn't working 
either, so the EE INIT failed.

I kept floundering around, pushing buttons, and then everything 
started working again.  This was one minute before the practice 
session, and the rig worked fine during practice.  Even when the 
buttons weren't working, the rig transmitted and received fine.

Any ideas what could have caused all this, or what 
corrective/preventative actions to take?


Dave Hachadorian, K6LL
Yuma, AZ