Preventing "Image Burn" Or "Burn-In" On Your Tv Screen - LG M2252D Owner's Manual

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Preventing "Image burn" or "Burn-in" on your TV screen

If a fixed image displays on the TV screen for a long period of time, it will be imprinted and become
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a permanent disfigurement on the screen. This is "image burn" or "burn-in" and not covered by the
warranty.
If the aspect ratio of the TV is set to 4:3 for a long period of time, image burn may occur on the
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letterboxed area of the screen.
Avoid displaying a fixed image on the TV screen for a long period of time (2 or more hours for LCD)
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to prevent image burn.