I just remembered when I was a kid(Im on my 30’s now) we had this old “box style” television. As it got older, there were times that a white thing will appear on the screen. You can still watch the show but its annoying. Imagine watching your TV while having a white curtain in front of it. One day, I got extremely furious because I was watching Smackdown and slap the side of the TV. Then, it returned to normal. I kept doing the same solution I discovered every time the white thing appears on screen until one day it stopped functioning. 😂
In: Technology
Older TVs had vacuum tubes. Think of a piece of foil inside a jar near a wire. They could move owing to thermal expansion, and things like a phase-locked loop could lose lock. A little jiggling could change, for example, the gain, enabling lock to be reacquired. Capacitors were also plates that you could adjust manually. Again, a jiggle could affect them.
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