I have no picture on my Vizio TV. What are the main troubleshooting steps?

Verify the correct input source is selected (such as HDMI 1 or HDMI 2), and check that all cables connecting external devices are securely plugged in. You can also try adjusting brightness, contrast, or backlight settings in the picture menu. If the issue persists, try a different HDMI cable or port. (Page 1)