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

Not showing on TV screen

So on my phone it shows that my device is connected. But in my TV screen in getting a blank. No home page, nothing.  I tried several times to reset the Roku box, unplugged and plugged back in and unplugged HDMI cable and replugged. Nothing . Blank screen