[Elecraft] K3 No speaker audio

[T Gahagan]

I operated in the 10 meter contest for several hours yesterday using my K3 
and laptop computer using N1MM.  I noticed low audio and increased it by 
going to the Hi setting in the config menu.  It helped some but audio still 
seemed low.  Speaker audio finally failed completely.  Also, a component(s) 
somewhere smoked as I noticed a whisp of smoke rising from the ventilation 
slots near the PA.  I quickly pulled all power to the radio.  I have pretty 
much dismantled the K3 except for the front panel and cannot find any 
damaged components.

After reassembling the K3  and powering  it up and all seems to work 
normally except there is no speaker audio.  I noticed a similar failure 
occured with the K3 tested by the ARRL and mentioned in their report in 
January QST.  My next step will be to pull the front panel off and check out 
the DSP board.

I would really appreciate any ideas.

Todd, WA7U