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.
If you want to "do it yourself" a YouTube search for your TV model (or at least its manufacturer) may be your best bet for instruction. Try "replace [brand name] coaxial connector" or "replace [brand name] antenna connector".
Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T