Sometimes when TVs show nothing but fuzzy static, in the correct channel, people can hit them and it ‘fixes’ it and displays the correct image, how does that work? What’s initially wrong and then what gets fixed?
I’m not sure if it happens with new TVs though.
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dust and grease can cause micro shorts that interfere with the electrical signals.
a good smack can shake some of that loose and allow better images without the noise.
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