[Elecraft] K3: Line-In dead (or heavily attenuated)

[James Sarte]

I've sent an email over to Aptos hoping that they may know what's going on
with my K3.  A few days ago, I noticed that sometimes the amount of line-in
gain required for a digital signal from DM780 varied quite a bit.  Some
days, all it took was a level of 14 and I'd have about 6 bars of ALC.  On
others, gain had to be set to nearly 25.  Well, today it seems that my
line-in died all together or at the very least has become heavily
attenuated.  I now have to crank the line gain all the way up to 60 to get
about 3 bars ALC!!

I have checked, and no audio settings have been changed on my PC.  I even
plugged in a set of speakers to the line out jack on the PC and everything
is fine.  What is weird is that sometimes, fiddling around with the mic/line
input settings in the Main menu fixes things for a while, but then it's back
to almost zero input after a while.

Any suggestions?  Lyle seems to think it could be a bad solder.  I'm going
to let the rig cool off and see if the problem occurs while cold.  I've also
reloaded the current firmware twice, plus went back to 3.19 just to make
sure it wasn't a FW issue.

-- 
73 de James K2QI