Please make sure your c4l2 hardware is inserted in TV ,and then launch alexa app in your TV and sign in your amazon account. After a while ,a serials of number will be shown on TV, you need to log in the website :https://amazon.com/us/code ,and input the number . Through these steps, your TV will register to your account ,and try to use your alexa app in your phone to discover and add the TV.
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