You may be wondering why your LG TV experiences frequent changes in brightness, with the screen alternating between dark and bright. There are several potential causes for this issue, and we will explore some of the most common reasons along with effective solutions.
One possible explanation is the presence of an auto-brightness feature in newer LG TVs, particularly those with OLED displays. This feature is designed to prevent burn-in and adjusts the brightness automatically. However, it can sometimes lead to confusion when the TV appears either too dark or too bright.
To address this problem and stop the fluctuating brightness, consider the following factors:
- APS (Auto Power Saver) Picture Setting: Ensure that this setting is not enabled, as it can reduce the TV’s brightness to save energy. It detects the ambient lighting conditions and dims the screen if the room is too bright. Disabling APS will prevent your LG TV from dimming unexpectedly.
- Usage as a Monitor: If you are using your LG TV as a computer monitor, this can also affect the brightness. Adjust the display settings on your computer to avoid conflicts and inconsistencies in brightness levels.
- Faulty HDMI Port: A faulty HDMI port can cause fluctuations in brightness. Check all HDMI connections and try using a different port to see if the issue persists.
- Defective HDMI Cable: A faulty HDMI cable can also lead to changes in brightness. Replace the cable with a new one to rule out any potential issues.
By following these steps, you can effectively troubleshoot and resolve the problem of changing brightness on your LG TV.
Step 1 : Disable APS (Auto Power Saver)
The Auto Power Saver mode in LG TVs is designed to lower brightness levels and conserve energy.
It automatically detects the ambient lighting conditions and adjusts the screen brightness accordingly.
For instance, if the room is brightly lit, the mode will dim the screen.
To disable APS(For New line up models) follow below steps:
- Press Settings button on Remote
- Then click Picture menu
- Then change the picture mode from APS to any other mode
To disable Energy Saver(For OLD models) follow below steps:
- Press Settings button on Remote
- Click All Settings
- Then click Picture Menu
- Then change Energy Saver from ON -> OFF
Step 2 : Change your INPUT Source
- Connected devices like DVD players, Cable STB, DTH STB, or Firesticks can affect the brightness of your LG TV.
- Switch through different inputs to check if the brightness issue occurs consistently across all ports.
- If the fluctuating brightness persists on every input, it indicates a problem with the LG TV unit itself.
- In case the brightness issue is limited to one specific external device or port, investigate the settings of that particular device.
Step 3 : Update the Software of your LG TV
To prevent issues that may arise during the lifespan of your LG TV, it is crucial to keep the software up to date.
Most LG TVs come with automatic updates enabled by default, ensuring that the latest software is installed when connected to the internet. However, there is a possibility of missed updates or interrupted installations, which can lead to problems with the TV.
The brightness-changing screen issue could be attributed to outdated LG firmware or an incomplete software installation.
It is highly recommended to update the LG TV firmware to access the latest software, new apps, and an enhanced viewing experience. Regular updates not only improve the overall viewing quality but also provide better security and privacy protection.
Click here to know, How to Update the Software of your LG TV?