LG BH5F-M 86" 4K UHD Ultra-Stretch Digital Signage Commercial Monitor - Manual (Page 27)

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• The PC BIOS configuration screen is not displayed correctly.
- On some PCs, the BIOS configuration screen may not display correctly because the 58:9 aspect ratio is not
supported before the graphics card driver is configured. This is not a problem of the product; it is due to the design
of the graphics card’s BIOS configuration screen aspect ratio. To access the PC BIOS configuration screen, please
connect a standard aspect ratio (4:3 or 16:9) monitor, then perform the BIOS configuration.
Issues Related to Screen (Color)
• Screen has poor color resolution (16 colors).
- Use PC settings to set the color to 24 bits (True Color) or above.
• Screen color is unstable or mono-colored.
- Check the connection status of the signal cable. Or, re-insert the PC graphics card.
• I see dark or bright spots on the screen.
- Some pixels (red, green, blue, black) are visible on the screen due to the unique characteristics of the display panel.
This is not a malfunction of the product.
• The screen’s brightness seems dark.
- Adjust brightness and contrast again.
- Backlight may need repair.
Issues Related to Sound
• The audio doesn’t work.
- See if the audio cable is connected properly.
- Adjust the volume of the product or external device.
- See if the sound is set properly.
• Sound is too dull.
- Select the appropriate equalizer sound.
• Sound is too low.
- Adjust the volume of the product or external device.
• For some models, you will need to purchase external speakers separately since they do not have speakers built-in.
Other Issues
• The power suddenly turned off.
- Check if the ‘Power Off Time’ is set.
- Power interrupted. See if the product power cord is connected properly.
- Check the power control settings.