[Elecraft] Sub RX no sound

[Randy Lake]

I have not used the Sub in a very long time. I tried to use it last evening
and I get no audio out of that channel. It is using the correct antenna
(1), correct FL1, RX antenna is not selected, Mix is A - b. If I choose A
A I do get A out of both speakers. Sub AF is balance .
I have gone through the manual and see nothing that stands out but before I
tear into it wanted to check here.
Thanks all !
Randy N1KWF

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Randy Lake N1KWF
73 Gunn Rd.
Keene,NH