Network - Wireless & Wired Connections

Help & troubleshooting for network issues, including connecting your device to your home Wi-Fi network, connecting to public networks, troubleshooting wireless issues & ethernet connections, and optimizing streaming performance.
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Level 7

No Signal on Vizio HDTV with Roku 2

After working for several years, my Vizio HDTV when turned on, shows the ROKU logo and then indicates there is 'no signal.'  I have unplugged/secured all connections, etc. with no luck. A new TCL Roku TV has no signal/connection issues.  What am I missing? 

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