What is the Auto Power Off feature and how do I adjust it?
By default, your TV is set to turn off after 10 minutes without a video or audio signal to help save energy. To adjust this feature, press the Menu button, highlight Timers and press OK, then use the Up/Down Arrow buttons to highlight Auto Power Off. Use the Left/Right Arrow buttons to change whether the TV will turn off, or select Off if you don't want the TV to turn off when there is no signal.
From the official Vizio Power Cycle Tv manual, page 24
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