[Elecraft] KX3 Intermittent changes in audio gain

[Kevin Luxford]

Hi Guys,
My KX3 has just developed an apparent fault - the audio level changes 
abruptly every few seconds from a comfortable listening level to quiet, 
but still audible.

I am using my Proset headphones.

Any thoughts on where I should start looking?  I am nervous about poking 
around surface mount circuits!

vy 73
Kevin
VK3DAP / ZL2DAP