SOURCE: Tartan Pattern on screen of 55 inch samsung led tv
Suspect main board that processes all signal in and to the screen.
If not tried do see if same problem when rear inputs for audio/video are used.
Testimonial: "Appreciate your assistance and advice. Im sure Mrs E would love to use it as an excuse for a bigger TV (it will hide the power point that just happens to be visible behind the existing one...lol ;-))"
SOURCE: how do I fix my 55 inch Samsung led tv that shut off and won't restart.
Replace the power board.
SOURCE: how to install alexa on amazon fire tv stick?
does your fire stick have voice command option if not alexa will not work
SOURCE: Why is My Alexa Echo not connecting to Fire TV today?
Many cause behind that for Alexa Not connecting to Fire TV
Loose connection for Alexa Setup device and Fire TV
Wi-Fi connectivity issues between Alexa and router and smart phone
Alexa is may be the switch mode
Alexa App not updated
Alexa firmware not updated may also arise the problem during connectivity with smart home device
Lastly: you need to fix the above problem or contact the Alexa expert and get the solution for Alexa Won't connect to Fire TV.
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