CEC changed still issue

May 8, 2018
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Lg tv with just power cord and amazon firestick (plus its cord) connected to it flipping from my hdmi2 input I’m on to snow screen or black screen sometimes back and forth.. CEC of simplelink was already off when searched and flipped on and off to ensure it’s off yet still the issue remains... pls help just mounted it on the wall now I’m so hurt..