The weak signal leads to poor Wi-Fi. Ultimately, LG TV does not save the Wi-Fi password on the LG TV. To avoid such problems, you need to connect your Wi-Fi router directly to the TV. Ethernet cable is the best option for this purpose. Buy an Ethernet cable and connect your LG TV and the router to this cable. How Connect a Roku Stick to Your LG TV. Look for an open HDMI port at the back or side panel on your TV. Plug in the Roku stick directly or use a HDMI cable for more placement and concealment options. Alternatively – Connect your Roku stick to your home entertainment center that connects to the TV. Plug your Roku into its power adapter. 2. On the [Project] screen, click [Connect to a wireless display]. 3. Check the list of discovered displays on the [Connect] screen and select a TV you want to connect. 4. If you are prompted to confirm the connection, select [Allow]. Once this is done, the PC screen and sound are streamed to your TV. The PC must be equipped with a wireless LAN 0XBqgk.