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Jeremy FergusonSep 23, 2025
What to do if the Unknown Product message appears when LG 55LS75C Digital Signage is connected?
- JJoshua DennisSep 23, 2025
Check if the Plug and Play function is supported by referring to the graphics card user manual.
What to do if the Unknown Product message appears when LG 55LS75C Digital Signage is connected?
Check if the Plug and Play function is supported by referring to the graphics card user manual.
Why is the screen color abnormal on my LG Digital Signage?
If the screen color on your LG Digital Signage is abnormal, set the number of colors to more than 24 bits (true color) by selecting [Control Panel] ? [Display] ? [Settings] ? [Color Table] in Windows. Check the connection status of the signal cable, and try re-inserting the PC graphics card. Note that this can be attributable to the unique characteristics of the LCD panel and is not a malfunction.
What to do if the audio function does not work on my LG 55LS75C?
If the audio function on your LG Digital Signage isn't working, verify the audio cable is properly connected. Adjust the volume and ensure the sound is set correctly. Also, select the appropriate equalizer sound and adjust the volume again.
What to do if the screen image looks abnormal on my LG 55LS75C?
If the screen image looks abnormal on your LG Digital Signage, 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 [Control Panel] ? [Display] ? [Setting] menu. Also, connect the signal cable that matches with the source input signal.
What to do if after-image appears on the LG 55LS75C Digital Signage?
If an after-image appears on your LG Digital Signage, and you use a fixed image for a long time, it may damage the pixels, so use the screen-saver function. When a dark image is displayed on the screen after an image with high contrast (black and white or gray), this may cause image sticking, which is normal for LCD screen products.
Why is no image displayed on my LG 55LS75C?
If no image is displayed on your LG Digital Signage, it could be due to the signal from your PC's graphics card being out of the product's vertical or horizontal frequency range. To resolve this, adjust the frequency range according to the specifications in the manual. Another possible cause is a disconnected signal cable between your PC and the product. Ensure the signal cable is securely connected.
What to do if audio function does not work on LG 55LS75C Digital Signage?
If the audio function on your LG Digital Signage isn't working, first ensure the audio cable is properly connected. Then, adjust the volume and check that the sound is set up correctly. You may also want to select an appropriate equalizer sound and adjust the volume again.
Why does the Unknown Product message appear when LG 55LS75C Digital Signage is connected?
Check if the Plug and Play function is supported by referring to the graphics card user manual.
Why is there no image on my LG 55LS75C?
If no image is displayed on your LG Digital Signage, ensure the power cord is correctly plugged into the power outlet. Also, check the signal cable and verify the input signal by pressing the INPUT menu on the remote control. If the signal from the PC (Graphics card) is out of the vertical or horizontal frequency range of the product, adjust the frequency range by referring to the Specifications in this manual.
What to do if the audio function is not working on my LG 55LS75C?
If the audio function does not work on your LG Digital Signage, make sure the audio cable is connected properly. Then, adjust the volume and ensure the sound is set correctly. You may also want to select the appropriate equalizer sound and adjust the volume again.
Safety guidelines for electrical power usage to prevent hazards.
Safety guidelines for product installation to prevent hazards.
Guidelines for safe movement and handling of the product.
Safety advice for using and cleaning the product.
Guidelines for securely mounting the display on a wall.
How to connect the display to a personal computer.
How to select and adjust picture modes for optimal viewing.
Configuring sound modes and audio effects.
Remotely managing the display via a web browser.
Explains the functions of each button on the remote control.
Setup for connecting multiple products for control.
Configuring initial digital signage settings post-installation.
Configuring power-off timers and display power management.
Setting up input priority and image sticking prevention.
General| Operating Temperature | 0 °C to 40 °C |
|---|---|
| Storage Temperature | -20 °C to 60 °C |
| Standby Power Consumption | 0.5W |
| Frequency | 50/60Hz |
| Screen Size | 55 inches |
| Viewing Angle (H x V) | 178° x 178° |
| Orientation | Portrait & Landscape |
| Input | HDMI, USB |
| Output | Audio Out |
| External Control | RS-232C |
| Power Supply | 100-240V~, 50/60Hz |
| Input Voltage | AC 100-240V |
| Resolution | 1920 x 1080 (Full HD) |
