The back up camera on our 2012 car was flickering as I backed out of the driveway this morning. Instinctively, I gave it a gentle pound and like magic the screen started working as expected.
I vaguely remember this being a common practice to fix the screen tv screen when I was younger in the late 80s early 90s.
I’m curious what actually happens when you whack a TV or a screen to “fix” it.
In: Engineering
When plug-in valves were still being used things got very warm in the back of the set. This could cause the valve legs to creep up in their sockets because of expansion and contraction. A good thump could reseat them properly. And, if nothing else, just shaking the dust off things like variable capacitors could have miraculous effects.
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