[Elecraft] K3 3422 gone deaf

[David Christ]

I got a new 6k filter for my K3.  I installed it as FL1, moved the 
2.7k from FL1 to FL2 and the .5k from FL2 to FL3.  Changed the 
configuration to match the new hardware.  Then without verifying the 
installation I installed MCU 3.68 with Utility 1.2.8.  Noticing that 
I was supposed to use Utility 1.2.10 I downloaded the new utility and 
reloaded 3.6.8.  Rig is now effectively deaf.  Sounds the same as if 
there is no antenna connected.  No change in background noise when 
antenna is connected.  Switching from ANT1 to ANT2 and back causes 
relays to click but no change in sound.  I verified that the antenna 
is OK with another receiver.  Extremely strong signals can be barely 
heard so it is not totally dead, just has ear plugs in.  From what 
little signal I get, the attenuator and preamp seem to work.  Tonight 
no strong signals so nothing but gentle hiss.

Installation was done on an anti-static mat with a wristband.

Any suggestions on where to start would be appreciated.

David K0LUM