Why Does My Sony TV Take So Long to Warm Up?

Written by mark gillespie
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Why Does My Sony TV Take So Long to Warm Up?
Waiting for a TV to warm up can seem longer than it really takes. (Jupiterimages/Comstock/Getty Images)

Some Sony TVs take a few seconds to warm up before the picture appears. This is true not only of Sony but other brands as well. The components inside the TV are responsible for this delay.

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Vacuum Tubes

Many older TVs, including Sonys, are made with glass vacuum tubes. A vacuum tube is the picture tube that allows the TV to display images.

Why Does My Sony TV Take So Long to Warm Up?
Older model TVs use vacuum tubes to display the picture. (Hemera Technologies/Photos.com/Getty Images)

The Heating Element

Vacuum tubes only work after they heat up. A heating element, such as a copper filament wire, is built into the TV. After the TV's power is turned on, it takes a certain amount of time for the heating element to warm the vacuum tube. There will be a small wait, measured in seconds, before the picture appears.

Why Does My Sony TV Take So Long to Warm Up?
Vacuum tubes need time to heat up. (Thomas Northcut/Photodisc/Getty Images)

Plasma and LCD TVs

Modern plasma and liquid crystal display (LCD) TVs do not use vacuum tube technology to create a picture. These TVs work differently and typically take less time to warm up.

Why Does My Sony TV Take So Long to Warm Up?
New plasma TVs don't take as long as older models to warm up. (Tom Pennington/Getty Images News/Getty Images)

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