eli5: How does smacking a TV make it work again?

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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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8 Answers

Anonymous 0 Comments

It doesnt. It was pure matter of chance in the old electronics that had vastly different manufacturing processes than it has now. In the old days you had bulkier components and much more movable parts, and sometimes, they would slide a bit out of their positions over the time or some connection would get loose. Smashing it would sometimes, way less than it is shown in TV shows/cartoons, put it back to place and re-eastablish the connection.

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