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Understanding the terms
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Image retention refers to any image that "sticks" on a screen, even when the content changes. It usually appears as a faint ghost, and with most TVs this fades after a moment or two.
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Burn-in is a form of image retention that lasts much longer, and it's usually visible even when playing other content. It's usually caused by leaving a static image on a screen for a long period of time.
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Causes of burn in
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Channels that have a static logo, such as news channels, can leave a burn in if left for a prolonged time.
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Pausing a video game and leaving the TV on for prolonged periods.
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Having the mode set to vivid or having the brightness level very high for extended time periods.
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Lg Tv's also offer settings to help move or refresh pixels such as:
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Screen Saver
LGs wall paper slide show (screen saver) is set to show images that would refresh all the pixels and help prevent image burn in.
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Screen shift
A setting that moves the screen slightly at regular intervals to prevent image sticking on the display panel.
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Press the Home > Setting > All Settings > Picture tab > Oled Panel Settings > Screen Shift > ON
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Clear panel Noise
An option that helps calibrate any issues that may arise on the screen when your TV has been turned on for a long time.
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If you use the TV normally there's no need to run it manually. It will run automatically every time you turn off the TV. It will always do ~5min cycles every time the panel accumulates more than 4h of ON time, and the full 1h cycle when the panel accumulates 1000h of ON time.
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Press the Home > Setting > All Settings > Picture > Oled Panel > Clear Panel Noise (pixel refresher) > Start once TV is turned off
Note: If you power on the TV, the Clear panel noise (pixel refresher) will stop operating.
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Additional ways to reduce the effect
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Create an all-white screen in a graphics application and save it as a JPEG file and use this as the image displayed by the screen saver, or Search YouTube for "white background".
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Turn the display brightness down (but not off) to preserve back light bulb life.
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