Since it has an internet connection, I'm sure you could buy a set of connectors that plug into a 110 outlet, one to the ethernet connection on the TV, one to a port on the router. Example:
You could also use a wireless media adapter like the Linksys WUMC710 - Linksys Wireless AC Universal Media Connector WUMC710 (~$35) - wireless media adapters like that plug into the ethernet port instead of the USB port, and 'look' to the TV just like a hard-wired ethernet connection.
You could also go with a set of Powerline adapters... one connects to the TV's ethernet port, and the other connects to a network switch (e.g. the 4 LAN ports on the typical home router), then they talk to each other at 5GHz to 20GHz through the copper wiring in your home (at those frequencies the signal travels mostly on the outside of the wire, due to "skin effect").
A 'starter set' of those will also cost you about $35.
example - TP LINK TL PA4010KIT AV500 Nano Powerline Adapter Starter Kit up to 500Mbps
HAVE YOU DONE A VOLTAGE CHECK ON THE ADAPTER? IF NOT, READ WHAT THE VOLTAGE ADAPTER OUTPUT IS. IF THE MEASUREMENT IS DIFFERENT OR DON'T GET A READING AT ALL IT MEANS YOU HAVE AN OPEN CIRCUIT ON THE ADAPTER. MOSTLY MOST WIRES BREAK UNSEEN INSIDE THE PLASTIC INSULATOR NEAR THE PLUG END OR NEAR THE ADAPTER END, WHERE THEY BEND MOST.
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