KAT2 unresponsive

[Bob-3]

 After doing a re-alignment of my K2 ser. #3218 yesterday I started to play
on the air and suddenly my KAT2 would no longer tune to my buddipole
antenna.  In fact, the ATU menu is now inaccessible. When entering the menu
system and selecting the ATU submenu, the only display is "--" while
rotating the VFO or using Band+/Band- to change menu options.

I removed the KAT2 assembly and looked at all components but did not see
anything obviously smoked, so I'm at a loss of what might be wrong.  The
tuner was working fine yesterday and earlier today, and then after one
press of the "Tune" button on the front panel it is no longer functional.

Help appreciated!

Best regards,

Bob Solimeno  KC2JAV
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[Don Wilhelm]

Bob,

The '--' in the ATU menu means that the KAT2 firmware is not being seen
by the K2 MCU.

Take a good look at the point where the control cable is attached to the
KAT2 control board - look for broken wires.
Do the same for the header that plugs to K2 Control Board P4.

Make certain the header which plugs into K2 Control Board P4 is
installed correctly - the green wire should be at the top.

73,
Don W3FPR

   tuner was working fine yesterday and earlier today, and then after one
> press of the "Tune" button on the front panel it is no longer functional.
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