It is called “Percussive Maintenance”
Before the mass availability of integrated circuits, electronics used many more components, much bigger components with much pigger solder points.
As time goes forward those connections can oxidate and stop conducting. Smacking something can scrape off some of the oxidations and make the conduct again. HOWEVER over time the repetitive scraping can eat away the contact as a whole and dislodge conponents, broking the thing itself
If you have to smack your TV to fix it, consider it broken, smacking is just a bandaid… The more you hit it the more it is going to broke, until it is broken permanently
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Todays technology uses ever so smaller and more integrated chips, if something breaks it is most probably inside a chip, hitting it doesn’t help it is burned out…
A television used to be made with tubes in them. Now everything is on a motherboard.
So smacking a television would even make the tube connect or start up.
You could take a tube out of the television yourself and go to the store and there was tube testers you could put them in to tell if they still worked.
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.
Feom whag i’ve been told, the problem is usually a short circuit somewhere in the device or somethign aling those lines.hitting it has a chance of reconnecting the wires, so it wouldnt fix permanently it, but be a temporary job.
Absolutely still does it on modern stuff, just the other week i had to smack my sister’s phone because it had a purple screen of death, instantly worked again after 3 osh hits. Probably does it for all devices tbh
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