Vizio TV with Blue Screen says, "Aucun Signal!"

My Vizio Has a Blue Screen But Doesn't Shut Off Troubleshooting your Vizio TV requires that you first identify the source of the problem. A blue screen on your Vizio TV can indicate that you are experiencing a problem with the video input on your TV, while the failure to turn off may indicate that there is a problem with overcharged internal memory or your power capacitors in your TV.

Finding the cause of your Vizio's problems can involve trial and error.
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Check Your Connections The connections leading to and from your Vizio TV may be responsible for your Vizio TV having a blue screen and failing to power down. Tighten the coaxial connections to your TV and firmly press in any HDMI, component or composite video cables connecting to your TV, then check the signal on your TV to see if the blue screen problem resolves itself.

Discharge Your TV's Memory Overcharged internal memory can lock up your Vizio TV and prevent it from changing channels or turning off. To discharge your TV, unplug your TV and press and hold the "Power" button for 30 seconds. Plug the TV back into the electrical outlet after 30 seconds and check to see if the problem persists.
Change Input
The input source connected to your TV may be malfunctioning and preventing your Vizio TV from powering off. The "Input" button on your remote will allow you to select a new input source. Cycle through input sources until you find one that displays an image on your screen and power the TV off. If this method works, you may need to replace the input source preventing your TV from turning on.

Power-Cycle Your Equipment Power-cycling your equipment can solve errors created by devices or with your TV's power supply. To power-cycle your equipment, unplug your TV from the electrical outlet along with any devices connected to your TV. Plug your TV back in and turn it on. Plug in each device, one at a time, and notice if your TV displays a blue screen or has trouble turning off. Repeat this process for each device connected to your TV and replace any devices causing problems with your TV.

power board

must be some firmware/software problem or some capacitor maybe burnt.

www.proscanvideo.com

You can if it has it connect to cable fitting and or the various av jacks on set---use original remote and switch inputs to make sure you are on the one you are hooked up to.

Look for a button named "AV", "AV in", "TV" or "Source" any or all of these should work.

Hey there! This issue is usually caused by the tv being on the incorrect channel. Depending on what tv you are at, here are some steps to try. At tv2, the tv will need to be on 60 or 73. At tv1, the channel is 3 or 4, and may need to be on an input. Usually video1 or 2, etc... If this does not work, try to unplug the receiver from the power source for about 10 seconds. Hope this helps!

Becki Barned
DISH Network Customer Service

If your television is displaying a blue screen or no signal message and then turning off, your TV may be at an inactive input. Here's how you can get back to watching your TV:
1. Powering on your TV and press the INPUT button on the VIZIO remote control repeatedly until a picture re-appears.
2. If this does not work, try again but press the button slower this time.

I got this off the vizio website.

If the tuner is bad, changing the mainboard should fix the problem.

Check the cable connector. If it is OK then the turner has gone bad. Replace main board will fix it.