A Vizio TV’s volume will fluctuate if audio settings, such as ‘TruVolume’, conflict with your device. It may also be a firmware bug, a failing volume button, a faulty cable or the TV’s output settings. The volume may not respond at all if there is debris under the buttons or a remote is not paired.
A Vizio TV will flicker if there is a broken backlight, loose or faulty video cable or port, poor signal strength or incompatible display settings. The TV logo will flash when the firmware is corrupt and the power light will blink when an update is required or if you are using a foreign remote.
If your Vizio TV’s HDMI port is not working, the most successful fix is to perform a hard restart by unplugging it from the power. Alternatively, you may need to replace the HDMI cable or port, change the device display settings, update your firmware or perform a factory reset.
A Vizio TV will turn off if ‘Auto Off’ is enabled, there is a power surge, the TV overheats, ‘CEC’ is enabled, the TV cable is loose, another device is interfering or the main board is broken. If it won’t turn off, it is likely the input device, overloaded internal memory or a malfunctioning remote.