Mini converter Analog to SDI audio problems

I am taking analog video and balanced audio from a commercial satellite receiver and trying to pass to SDI input of my new SDI encoder system for my low power TV station.
Video is good but on audio.
I have the + line connected to the tip of 1/4 jack and the - to the ring. Not using the ground.
The receiver is putting out analog audio and video to my analog encoder.
I am at a loss any suggestion?

Thanks
Jim