I have a Yamaha receiver. If I set it to pass the HDMI thru when it's off it only passes the video. I thought it was the receiver until I plugged the HDMI directly from the telus box into my Samsung tv and again only video, no audio. I only get audio if I run it thru the receiver and turn it on so it's not just passing it thru. Ive checked all settings on the receiver, tv, and telus box. Any ideas?