Have you tried changing the color temperature in the settings menu for the LG UK6300PUE 4K HDR Smart LED UHD TV w/ AI ThinQ® - 65'' Class (64.5'' Diag), Model # 65UK6300PUE? Open the settings on the TV and select Picture. Open Picture Mode Settings, scroll to Color Temperature, and click on it. Drag the Color Temperature slider to the left side to your desired value. The blue light tint should disappear as you drag it to the left. If that does not resolve the issue, check your HDMI cables. One of the more common reasons why the screen becomes blue-tinted is simply because the HDMI cable is not connected correctly. Faulty cables can cause all sorts of image issues on your screen, so you may need to swap the HDMI cables out for new cables. If you use your TV for multiple things e.g., cable, gaming, a Blu-ray player, and the blueish tint only happens when you are using one of them, then it is likely an issue with the HDMI cable. If that is not the issue, in exceedingly rare cases, the LED backlight may be broken. You will know the LED backlight is broken when you start seeing blues appear everywhere on your screen. Normally, only the brighter colors will have a blue tint. However, a defective LED backlight will make dark blacks and grays have a hint of blue too. No matter how much you tinker about with the settings, you won’t be able to remove that blue tint. In that event, simply disconnect your TV from the power source by unplugging it from the wall outlet, wait for about 1-2 minutes, then plug the power cable back in. After that, turn your TV on, make sure that you chose the correct input mode, and see if the blue tint is gone.
If this helps, it means your TV might have had some sort of software glitch that caused the screen to look blue.
If none of the above suggestions work, then you can always try a factory reset. You will need to consult the manual for your TV here. Usually, you will need to press Menu/Settings on your TV, and scroll down to the option that says Reset to initial settings/Factory reset. Remember that a factory reset will literally reset everything on your TV. This means all of your usernames and passwords and all the audio and visual settings you have worked hard to set up, so you may want to note those settings before you carry out a reset. You will lose everything...^Ivan
Date published: 2022-09-13