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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Generally a bad solder joint, for example on a cap. Whacking the set makes the connection, then expansion due to heat generally keeps said connection i till you switch it off and it all cools down.
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