Samsung UN55ES6150 E-Manual page 635

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You have intermittent loss of audio or
video.
Check the cable connections and
reconnect them.
Loss of audio or video can be caused
by using overly rigid or thick cables.
Make sure the cables are flexible
enough for long term use. If mounting
the TV to a wall, we recommend using
cables with 90 degree connectors.
→ Setup.
System