Yamaha RX-V473 5.1 Channel Network AV Receiver "v475 video" Questions

I am trying to connect my zenega CD1004 iS set top box to the rxv 475 through the cable with 3 jacks, white red and blue to AV5 or AV6, but the picutres dont come on the TV. This is the only unit with

Why is the rx v475 sending more power to one speaker than the other? It is about half power. One speaker is much louder than the other. I have already checked the balance and have re-set the machine ...

...update, I am running 1.14 update. Can I stream video on AirPlay to the Yamaha rx v475? the sound is working fine with airplay and Yamaha's app but video won't show, they are played as sound