I watched a Disclosure (band name) concert via the youtube app on a Roku 3. A few minutes in and the concerts light show shuts my LG plasma off. The first time it happened i assumed it was a power issue or someone pressed a button on the remote...then it happened again a week later. I tested it a couple of times and each time the TV shuts off at the same point.
Anyone else experience something like this? The closest i have come is with some TVs i installed 10 years ago that i had to paint the IR receiver out because the sun would interfere with the IR commands.
If you have an LG plasma try it out. It happens somewhere between the 1 and 2 minute mark.