An LG Smart TV blue tint is most often caused by an incorrect color temperature setting, such as the TV being set to a "Cool" preset, or an imbalanced Tint adjustment. Fixing this usually involves adjusting smart TV picture settings to use a warmer color profile, though a faulty HDMI cable or a loose connection from an external device can also be the culprit. If your screen is flickering instead, the issue may resemble my Samsung smart TV glitching from signal interference.
First, check if the blue tint is everywhere
Before making any changes, determine if the blue tint is present on every source. Open the TV's main menu and check if the blue tint appears there. Then, watch a built-in app like Netflix or YouTube to see if the problem persists. Finally, switch between every HDMI input you use. If the blue tint only appears on one specific input or channel, the issue is likely with that external device, its cable, or the broadcast signal itself. If the blue tint is visible on the menu, all apps, and every HDMI input, the problem is likely with the TV's internal settings or hardware.
Run the LG TV picture test
LG TVs include a built-in diagnostic tool to check for internal hardware problems. Using the Screen Self-Diagnosis (Picture Test) function will tell you if the TV's panel is defective. If the test image also appears abnormal, the TV likely has a hardware issue. To access this:
- Press the Settings button on your remote control.
- Navigate to All settings.
- Select Support.
- Choose Screen Self-Diagnosis.
If the test image looks normal (no blue tint), the problem is not with the TV's hardware and you can proceed with the other troubleshooting steps.
Adjust the picture and color temperature settings
The most common fix for a blue tint is to correct the color temperature and tint settings. LG defines 6500K as 'Warm', 9300K as 'Medium', and 11000K as 'Cool'. A 'Cool' setting will make the picture appear very blue. To fix this:
- Open the Picture settings from the main Settings menu.
- Locate the Color Temperature option.
- Change the Color Temperature to a "neutral" level (around 6500K) or a "warmer" profile such as "Warm" or "Warm 2". This will produce a balanced picture and natural skin tones.
- Find the Tint setting. Use this to adjust the balance of green and magenta tones to correct any remaining color imbalance.
Check your HDMI cable and external devices
Unstable signals from a set-top box or connected external device, or a loosely connected or damaged HDMI cable, can cause abnormal picture color, including a blue tint. First, inspect the HDMI cable for any visible damage. Reseat the cable at both the TV and the source device to ensure a secure connection. If you have another HDMI cable, swap it out to see if the blue tint disappears. If the problem only occurs with one specific device, the issue may be with that device's output signal, and you might also want to change the startup screen on my Samsung smart TV to verify if the tint appears before any external input loads.
Update your TV's software
Outdated software can cause color rendering issues. Check for and install the latest firmware update. Navigate to the Settings menu, then Support, and select Software Update. Ensure your TV is connected to the internet to download any available updates. You can also enable automatic updates to ensure the TV stays current. After updating, power cycle the TV by unplugging it from the wall outlet for a few moments and plugging it back in to refresh the system.
When to contact LG support
If the Picture Test fails, or if the blue tint persists after adjusting all settings, checking cables, and updating the software, the issue is likely a hardware problem with the TV's display panel or internal components. In this case, you should contact LG support for professional assistance.
