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LG UltraGear 34GL750 - User Manual

LG UltraGear 34GL750
40 pages
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* LG LED Monitor applies LCD screen with LED
backlights.
Please read this manual carefully before operating
your set and retain it for future reference.
34GL750
34GN73A
www.lg.com
Copyright © 2019 LG Electronics Inc. All Rights Reserved.
OWNER’S MANUAL
(LED Monitor*)

Table of Contents

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Questions and Answers

  • J
    jeffreyboydJul 27, 2025
    How to fix an LG Monitor when nothing is displayed on the screen?
    • C
      Christie PerezJul 27, 2025
      If nothing is displayed on your LG Monitor, first ensure the power cord is correctly plugged into the power outlet. Next, verify the power cable connection and press the power button. Also, check that the connected input is enabled in the monitor's settings (Settings > Input). If the monitor is in sleep mode, try moving the mouse or pressing any key on the keyboard. Confirm that your computer is turned on. Check the monitor cable and reconnect it. Install the display driver from the LG website (http://www.lg.com), and ensure your graphics card supports Plug and Play.
  • K
    Kimberly BradyAug 1, 2025
    How to fix no sound from the headphone port on LG UltraGear 34GL750 Monitor?
    • W
      wardjoshuaAug 1, 2025
      If you are getting no sound from the headphone port on your LG Monitor, ensure that the headphone port connections are properly made. Then, try increasing the volume using the joystick. Finally, set the audio output of your PC to the monitor you are using. On Microsoft Windows, go to Control Panel > Hardware and Sound > Sound and set the Monitor as the default device.
  • J
    joseph93Aug 7, 2025
    Why is the display color abnormal on my LG Monitor?
    • M
      Morgan RodriguezAug 7, 2025
      If the display color on your LG Monitor is abnormal, first set the color to 24 bit (true color) or higher by navigating to Control Panel > Display > Settings > Color Quality in Windows. Also, check if the signal cable is properly connected; try reconnecting the cable or reinserting the PC's graphics card. Note that some color variations are not errors and are unrelated to the monitor's performance.
  • J
    Joseph JohnsonAug 11, 2025
    What to do if the screen display is unstable and shaky on my LG UltraGear 34GL750 Monitor?
    • O
      oadamsAug 11, 2025
      If you are experiencing unstable and shaky screen display or shadow trails on your LG Monitor, and the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen may be flickering. Change the resolution to 1080p or the recommended resolution to resolve this issue.
  • A
    Alexis Brown MDAug 17, 2025
    Why does the screen retain an image on my LG UltraGear 34GL750 Monitor?
    • A
      Amy WilsonAug 17, 2025
      Displaying a still image for a prolonged time may cause damage to the screen, resulting in the retention of the image on your LG Monitor. To extend the lifetime of the monitor, use a screensaver.
  • A
    Allen RojasAug 21, 2025
    How to enable disabled features on LG UltraGear 34GL750 Monitor?
    • S
      sanchezelizabethAug 21, 2025
      If some features are disabled on your LG Monitor, go to Settings > General and set OSD Lock to Off. This should re-enable the disabled features.

Summary

License Information

Open Source Software Notice

Assembling and Preparing the Monitor

Supported Drivers and Software

Information on recommended drivers and software for the monitor.

Product and Button Description

Details the physical components and buttons of the monitor.

Using the Joystick Button

Explains the basic functions and operations of the joystick button.

Moving and Lifting the Monitor

Provides instructions for safely moving and lifting the monitor.

Installing the Monitor on a Table

Guides on how to properly place the monitor on a desk or table.

Adjusting the Stand Height

Instructions for changing the monitor's vertical position.

Adjusting the Monitor Angle

Details how to tilt the monitor screen for optimal viewing.

Tidying Up Cables

Methods for organizing and managing monitor cables neatly.

Using the Kensington Lock

Explains how to secure the monitor using a Kensington lock.

Installing the Wall Mount Plate

Steps for attaching a wall mount plate to the monitor.

Installing the Monitor on the Wall

Instructions for mounting the monitor onto a wall.

Using the Monitor

Connecting to a PC

How to establish a video and audio connection from your computer.

HDMI Connection

Transmits digital video and audio signals from your PC to the monitor.

DisplayPort Connection

Transmits digital video and audio signals from your PC to the monitor.

Connecting AV Devices

How to connect audio-visual devices to the monitor.

Connecting Peripherals

Information on connecting external devices like keyboards or mice via USB.

Connecting Headphones

How to connect headphones to the monitor's audio port.

User Settings and Menu Navigation

Activating the Main Menu

Steps to access and navigate the monitor's on-screen display menu.

Main Menu Features

Overview of the different options available in the main menu.

User Settings Configuration

Detailed guide on configuring various user-specific display settings.

Menu Settings Navigation

Explains how to navigate and change various settings within the OSD.

Troubleshooting Common Issues

Nothing is displayed on the screen

Solutions for when the monitor screen remains blank.

Some features are disabled

Troubleshooting steps if certain monitor functions are unavailable.

The screen retains an image

Addresses image sticking or screen retention issues.

Screen instability and shadow trails

Resolves issues with unstable display or lingering image trails.

Abnormal display color

Solutions for incorrect or discolored screen output.

No sound from the headphone port

Troubleshooting audio output issues through the headphone jack.

Product Specifications

Factory Support Mode

Technical details on preset display modes and frequencies.

HDMI Timing (Video)

Specifications for HDMI video signal timing.

Power LED Status

Information on the monitor's power indicator light behavior.

LG UltraGear 34GL750 Specifications

General IconGeneral
Screen Size34 inches
Resolution2560 x 1080
Panel TypeIPS
Refresh Rate144Hz
Aspect Ratio21:9
Brightness300 cd/m²
Contrast Ratio1000:1
Ports2x HDMI, 1x DisplayPort, 1x Headphone Out
Color GamutsRGB 99%
HDRHDR10
VESA Mount100 x 100 mm
Curvature3800R
Adaptive SyncAMD FreeSync
Viewing Angle178° (H) / 178° (V)
Response Time5ms (GtG)
Weight6.8 kg (without stand)

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