replace network card on Samsung LED TV?

replace network card on Samsung LED TV?

I have a Samsung LED UN55D6400 TV. The network card is bad. Done lots of testing. It's the card. A wired connection sees the DCHP, auto-configs OK, but cannot see the Internet. Tried manual configuration and changing router settings. Always the same result. The network is seen but can't connect to Internet. Can it be replaced? Where would I get a replacement card?

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