If the input signal wire and the plug is well connected; If you’re using
Unshielded Twisted-Pair UTP, or if there is an electric welder,
generator, or motor operating around; if the pin and the socket is not
well connected; (you can pull the pin out, clean it and then insert it
into the socket again).
If the socket is well plugged; If the socket is powered up; If the tube
pipe is turned on; If the power button is pressed
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