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Anthony MillerSep 10, 2025
What to do if the 'Unknown Product' message appears on LG 55UM3DF Digital Signage?
- Llucas21Sep 10, 2025
Check if the function is supported by referring to the graphics card user manual.
To Next PageTo Next PageWhat to do if the 'Unknown Product' message appears on LG 55UM3DF Digital Signage?
Check if the function is supported by referring to the graphics card user manual.
Why is no image displayed on my LG 55UM3DF Digital Signage?
There might be several reasons why your LG Digital Signage is not displaying an image. First, ensure that the power cord is correctly plugged into the power outlet. Also, check the signal cable and access the input menu to verify the input signal. If the signal from the PC's graphics card is out of the product's vertical or horizontal frequency range, adjust the frequency range according to the specifications.
What to do if the screen image looks abnormal on my LG Digital Signage?
If the screen image on your LG Digital Signage looks abnormal, it could be due to the graphics card resolution and frequency not being supported by the product. Verify that the graphics card resolution and frequency are supported. If the frequency is out of range, set it to the recommended resolution in the “Display” settings in the Control Panel. Another potential cause is an improper input signal connected to the signal port. Ensure that you connect the appropriate signal cable that matches the source input signal.
Why does the audio function not work on my LG 55UM3DF?
If the audio function on your LG Digital Signage is not working, check the following: Ensure the audio cable is properly connected. Adjust the volume settings. Verify that the sound is set correctly. Select an appropriate equalizer sound. Adjust the volume once more to ensure it is not muted or set too low.
How to fix abnormal screen color on LG Digital Signage?
If the screen color on your LG Digital Signage appears abnormal, set the number of colors to more than 24 bits (true color) via Control Panel - Display - Settings - Color Table menu in Windows. Also, check the connection status of the signal cable, or try re-inserting the PC graphics card. Note that this may not be a malfunction of the LCD.
Why is there no image displayed on my LG 55UM3DF Digital Signage?
If no image is displayed on your LG Digital Signage, verify that the power cord is properly connected to the power outlet. Also, ensure the signal cable is connected and check the input signal via the input menu. If the signal from the PC (graphics card) is out of the vertical or horizontal frequency range, adjust the frequency range according to the specifications in this manual.
Why does after-image appear on my LG 55UM3DF Digital Signage?
If after-image appears on your LG Digital Signage, and you use a fixed image for a long time, this may be because the pixels may be damaged. Use the screen-saver function. Note that this is normal for LCD screen products.
What to do if the Unknown Product message appears when connecting LG 55UM3DF?
Check if the function is supported by referring to the graphics card user manual.
What to do if the screen image looks abnormal on LG 55UM3DF?
If the screen image on your LG Digital Signage looks abnormal, check if the graphics card resolution and frequency are supported by the product. If the frequency is out of range, set to the recommended resolution in the 'Display' settings in Control Panel. Ensure that the correct input signal is connected to the signal port.
Why is the screen color abnormal on my LG 55UM3DF?
If the screen color on your LG Digital Signage appears abnormal, ensure that the number of colors is set to more than 24 bits (true color) via Control Panel - Display - Settings - Color Table in Windows. Also, check the connection status of the signal cable, and if necessary, re-insert the PC graphics card. Note that several pixels (red, green, white, blue or black) may appear, which is normal for LCD panels and not a malfunction.
General| Screen Size | 55 inches |
|---|---|
| Panel Type | IPS |
| Contrast Ratio | 1200:1 |
| Viewing Angle (H x V) | 178 x 178 |
| Life Time | 50, 000 hours |
| Operation Hours | 16/7 |
| Orientation | Landscape / Portrait |
| Speaker | 10W x 2 |
| Power Supply | AC 100-240V, 50/60Hz |
| Power Consumption (Typ.) | 150W |
| Operating Temperature | 0°C to 40°C |
| Operating Humidity | 10% to 80% |
| VESA Mount Standard | 400 x 400 mm |
| Resolution | 3840 x 2160 (UHD) |
| Response Time | 8 ms |
| Surface Treatment | Anti-glare |
| Input | HDMI, DisplayPort, USB |
| Output | Audio Out |
| External Control | RS-232C |
| Dynamic Contrast Ratio | Mega Contrast |
