[Elecraft] No Power Out on Digital Modes

[k2te at juno.com]

I've been using my K3 almost exclusively on WSJT-X FT8 since the mode
came into being.  Things worked fine until a couple days ago when I no
longer see any power out or ALC indication regardless of band setting. 
All connections remain as before, untouched.  I switched to MMTTY and
AFSK-A to try RTTY and again no power transmitted.  I have no trouble
receiving for either application.  I've checked the speaker port of my
computer with a pair of headphones and I can hear audio when I key WSJT-X
so apparently the rig is getting audio in.

Is there a diagnostic I can run to see if there is a problem with the
LINE IN processing?

73 de Ed

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