Xbox One dropouts?

I was playing on my Xbox when the screen suddenly went black for a second. After that everything was fine again and the game continued. However, these dropouts occurred quite a few times. I've had the console for a few months and have never had any problems. What can that be? The HDMI cable is not defective and all other cables are fine.

Have you tried out different HDMI inputs on the TV?

Have only one HDMI input

Can you maybe connect it to another TV or monitor to test it?