My Vizio E550VL will not turn on but the orange light is on indicating power to the TV. Yes I did try the power button on side and nothing, also I tried holding menu button and nothing

Try unplugging wire. keep unplugged for `5 minutes and then reconnect. make sure the cord is plugged in securely on both ends

Use it for a couple of TV's on my patio and the picture is clear. It worked great for my Super Bowl party.