What causes dark shadow on LG TV screen?

Answered by Ricardo McCardle

I have actually experienced this issue with my own LG TV, so I can provide some personal insight into what causes dark shadows on the screen. The main culprit behind this problem is image retention or burn-in.

When an image is displayed on an LCD screen for an extended period of time, individual pixels can become temporarily fixed with a specific color. This can happen when watching a channel with a static logo, playing video games with static elements, or even leaving the TV on a single channel for a long time. Over time, these fixed pixels can create dark shadows on the screen, especially when a new image is displayed.

The reason for this is that LCD screens work by using liquid crystals to control the amount of light that passes through each pixel. When a pixel becomes fixed with a specific color, the liquid crystals lose their ability to control the light, resulting in a shadowy appearance. This is particularly noticeable when a new image is displayed on the screen, as the fixed pixels cannot adjust quickly enough to match the new colors.

It’s important to note that this issue is more prevalent in older LCD TVs, as newer models have implemented technologies to reduce the risk of image retention. However, it can still occur, especially if the TV is used for long periods of time with static images.

To prevent or minimize dark shadows on an LCD TV screen, there are a few steps that can be taken:

1. Avoid leaving the TV on a single channel or input for an extended period of time. If you’re not actively watching, it’s best to turn off the TV or switch to a different channel/input.

2. Enable any built-in screen savers or picture shift functions that your LG TV may have. These features help to prevent static images from becoming fixed on the screen by slightly shifting the pixels over time.

3. Adjust the TV settings to reduce the brightness and contrast levels. Higher brightness and contrast settings can increase the risk of image retention. Finding a balance that provides a clear picture without overly stressing the pixels can help prevent dark shadows.

4. Use the TV’s power-saving features. Many LG TVs have settings that automatically turn off the screen after a certain period of inactivity. This can help reduce the risk of prolonged exposure to static images.

If you do notice dark shadows on your LG TV screen, there are a few methods that can potentially help alleviate the issue:

1. Run a pixel refresher or screen wipe tool. Some LG TVs have built-in features that can help refresh the screen and reduce the visibility of image retention. Check your TV’s user manual or settings menu to see if this option is available.

2. Display dynamic content. Watching a variety of content with different colors and movements can help “unstick” fixed pixels and reduce the appearance of dark shadows. This can be as simple as changing channels frequently or watching a variety of shows and movies.

3. If the issue persists and is bothersome, contacting LG customer support or a professional TV repair service may be necessary. They can provide further guidance and potentially offer solutions specific to your TV model.

Dark shadows on an LG TV screen are typically caused by image retention or burn-in, which occurs when individual pixels become temporarily fixed with a specific color. To prevent this issue, it’s important to avoid prolonged exposure to static images and adjust TV settings accordingly. If dark shadows do appear, running a pixel refresher or displaying dynamic content can help alleviate the problem.