Open up the TV and remove the WiFi board.
Is it always a separate board? I'm not too familiar with TV boards, but most other things designed to run embeded Linux have the Wi-Fi at least soldered on to the board, and at most part of the same SoC that contains the CPU.
Is it always a separate board? I'm not too familiar with TV boards, but most other things designed to run embeded Linux have the Wi-Fi at least soldered on to the board, and at most part of the same SoC that contains the CPU.