Black Screen when connection apple TV 2. Gen to my TV via HDMI an over a Doulby Suround System (Sound is OK)

Dear Apple Comunity,
at first i want to wish all the best to the family and close friends of Mr. Jobs. It is a sad loss for all of us.
To come back to my topic:
I connected my apple TV set by HDMI to my Yamaha Doulby Surround System. When i try to use it then one in a while the screen stays black but i can hear the sounds of using my apple TV. I guess that indicates that the signales went from the apple TV to the Yamaha System but somehow the visual informations don´t reach my TV (and yes, i pluged the HDMI-Cable from the Yamaha to the TV-Set).
It just happens once in a while and i don´t know what to do about it. It´s pretty inconviniend that way.
The only way to get it back in track is to remove the Powerplug (HDMI doesn´t work).
Any suggestions.
Regards
René Engel
PS. Pls excuse my bad english.

I suspect it's your receiver, connect the HDMI directly between the Apple TV and the TV and use an optical cable to your receiver from the Apple TV for audio.

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