[Elecraft] No Speaker Audio / K3

[Keith Trinity WE6R]

To test,;
Set SPKRS+PH to yes, if audio comes back, then headphones are plugged 
in, OR the switch in the front or rear phones socket is bad and telling 
the brain a plug in in.
If setting SPKRS+PH to yes and still no audio, try tapping 1 while in 
that menu to toggle the sensing between early (+) or later boards 
(-)that had reverse polarity.
If still no audio (in speakers only), then probably a bad audio chip U1 
on DSP board.
(or if you had the front panel off recently, the two dual-row plugs from 
the DSP board to RF board may be UP one row of pins).
Keith WE6R