[Elecraft] K3 no SSB receive

[Hank P]

OK what did I do ? Been working on cw and external noise canceller for 
couple days - and just tried to listen for the TI9 on SSB - both main and 
sub rx are dead. All other modes fine , Just USB or USB dead - all bands 
absolutely not a trace of audio - did a couple on -off cycles no joy .

The 2.7 khz filter is selected for  SSB and is functional in all other modes 
both receivers.

Hank K7HP