Chris, In all probability, the little plastic lever which operates the switch inside the headphone jack has broken. It usually fails with no speaker, but it can fail either way. It is a bit of a pain, but you can shut off the speaker by plugging an empty jack into the external speaker jack on the back.
To replace the headphone jack, remove the Control Board and the Front panel assembly and the jack is readily accessible on the RF Board. If you do not know how to get those boards out, I can help, just ask. 73, Don W3FPR On 1/17/2011 12:28 PM, Christopher Kimball wrote: > > 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? > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

