Television and Video

Why would it take hours for an analog television to display a picture after it is switched on?

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2005-11-30 20:42:48
2005-11-30 20:42:48

If it is a very old TV, more than likely it contains vacuum tubes that have gone bad. Vacuum tubes work by deflecting electrons inside a glass tube. This requires the tubes to be heated, with a small internal heater. The tubes have to warm up for them to work. This process should only take a minute or two. If it is taking hours the heaters are bad, or they arn't getting enough power to warm the tubes properly.

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