Verify Settings Most modern TVs, video game consoles, and set-top boxes support multiple audio connection types. As a result, some adjustments may be necessary in each device’s main settings menu to ensure they’re sending a signal to the correct component.
Check Phyiscal Connections If your video settings appear to be correct, then make sure any necessary cables are connected securely. Cables can easily become loose over time, especially if they’re near frequently-moved furniture or you have particularly mischievous pets.
Ensure connections are connected correctly to either the input or out as some cable connections are specified.
Power Cycle Just like any other electronic device, TVs rely on clear communication with their signal sources. If your TV still isn’t displaying a picture, then power cycling the TV may resolve the problem:
-Unplug the power cord from the back of your TV -Disconnect the cables between the TV and any connected device -Allow the TV to sit unplugged for 1-2 minutes -Plug the TV’s power cord back in, reconnect any other devices, and then turn them back on
Firmware Up to Date Firmware updates can generally be obtained through the manufacturer’s website and installed via a CD or USB storage device. Some Internet-connected/Smart TVs also allow you to update the unit’s firmware by connecting directly to your home network. For step-by-step instructions specific to your TV, make sure to refer to your owner’s guide.
Try different connections If you’re still not having any luck, consider trying different cables or connecting your TV to a different device - both of these actions can help identify potential hardware problems.