[Elecraft] K3 - No speaker output

[Don Wilhelm]

Dick,

If you have an early K3 *and* you plugged a mono connector into the rear 
speaker jack, one channel was shorted by the mono connector. That will 
cause failure of the audio amp for the speaker.
Later K3s (I don't know the serial number) have protection for that 
shorting condition.  The best protection is not to put a mono plug into 
the speaker jack.  If you want mono, cut off the mono plug and connect 
only the tip and shell to your speaker - the ring does not connect to 
anything.

73,
Don W3FPR

On 1/14/2014 6:55 PM, Richard Solomon wrote:
> Can someone explain to me exactly why the chip failed, and what the Audio
> Protection Assembly is for ?
>
> Tnx, Dick, W1KSZ
>