For whatever reason, my screen started to blackout also. I reverted back to 8.0.1c, and all is well now. So, guess there is a video handshake problem with the later versions of 8.0.1. Did not test the over heating theory.
I can confirm that I'm also having this issue 8.0.1d onwards. Some videos appear as a black screen. Pressing the 'back' button on the remote goes back to the folder.
Edit: using a new HDMI cable with a 2160p @ 60hz TV