yamaha rx-a3080

Hello, I have Yamaha RX-A3080 and Samsung 8K QLED TV QE65Q950RBTXXH. I'm connecting HDMI cable (arc compatible) from oneconnect (HDMI3) to Yamaha receiver OUT1(arc) it seems the tv is switching to HDMI receiver but i don't get any sound. I have configured correctly both the TV and the receiver...