[Elecraft] K2 speaker/headphones switching.

[Christopher Kimball]

Just bought a new K2 #4913.  All is great, however, inserting a 
headphone doesn't cut off the speaker.  The headphone plug is a standard 
3.5 mm plug.  The schematics show the plug should cut the speaker.

Is there an internal parameter that needs setting?  If not what's the 
easy way to access the jack?

Thanks,

Chris Kimball
WB4WZR