[Elecraft] K3 Lost Control of Front Panel Buttons

[George Johnson W1ZT]

Need some direction where to look.

My K3 seems to have lost control of the front panel buttons.  RF operation
OK and VFO etc works.  Just no PB control.

Emailed Support but it is the weekend so I could use any direction of where
to dig into the radio.  Front panel connections come to mind but any other
suggestions are greatly appreciated.

George  W1ZT