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LG UltraGear 27GL850-B - User Manual

LG UltraGear 27GL850-B
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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.
27GL850
www.lg.com
Copyright © 2019 LG Electronics Inc. All Rights Reserved.
OWNER’S MANUAL
(LED Monitor*)

Table of Contents

Questions and Answers

  • R
    richardsonveronicaJul 28, 2025
    Why is nothing displayed on my LG Monitor screen?
    • K
      Keith KleinJul 28, 2025
      If nothing is displayed on your LG Monitor screen, start by checking if the power cord is correctly plugged into the power outlet. Also, verify the power cable connection and ensure you press the power button. Make sure the connected input is enabled in the monitor's settings under Input. If the monitor is in sleep mode, try moving the mouse or pressing a key on the keyboard. Confirm that your computer is turned on. If the signal cable between the PC and the monitor is missing or disconnected, check the cable and reconnect it. Finally, ensure you install the display driver from the LG website and that your graphics card supports Plug and Play.
  • T
    Tammy JacksonAug 3, 2025
    How to troubleshoot no sound from the headphone port on LG Monitor?
    • R
      Ronald MunozAug 3, 2025
      If there is no sound from the headphone port on your LG Monitor, first ensure that the headphone port connections are properly made. Then, try increasing the volume using the joystick. Finally, set the audio output of the PC to the monitor you are using by going to Control Panel > Hardware and Sound > Sound on Microsoft Windows and setting the Monitor as the default device.
  • M
    Melissa DiazAug 8, 2025
    What to do if the display color is abnormal on my LG UltraGear 27GL850-B Monitor?
    • M
      marcorodriguezAug 8, 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. Then, check if the signal cable is properly connected; reconnect the cable or reinsert the PC's graphics card. Note that pixilated spots (red, green, blue, white, or black) may appear, which is normal and not related to the monitor's performance.
  • M
    Mitchell SheaAug 13, 2025
    How to fix unstable and shaky screen display with shadow trails on my LG Monitor?
    • T
      Thomas NewtonAug 13, 2025
      If your LG Monitor's screen display is unstable, shaky, or images leave shadow trails, it might be due to the resolution being set to HDMI 1080i 60/50 Hz (interlaced). Try changing the resolution to 1080p or the recommended resolution.
  • A
    Alyssa JacksonAug 17, 2025
    What to do if some features are disabled on my LG UltraGear 27GL850-B Monitor?
    • S
      smithlisaAug 17, 2025
      If some features are disabled on your LG Monitor, it's possible that the OSD is locked. To unlock it, go to Settings > General and set OSD Lock to Off.
  • B
    Bailey BrownAug 22, 2025
    How to prevent image retention on my LG UltraGear 27GL850-B Monitor screen?
    • S
      schultzkarenAug 22, 2025
      Displaying a still image for a prolonged time may cause damage to the screen of your LG Monitor. To extend the lifetime of the monitor, use a screensaver.

Summary

Drivers, Software, and Product Description

Joystick Button Identification

Location and function of the monitor's joystick button.

Monitor Operation and Handling

Joystick Button Functions

Basic controls for power, volume, and brightness.

Moving and Lifting Safety

Precautions to prevent damage during movement.

Monitor Handling and Safety

Safe Monitor Handling Procedures

Guidelines for holding and transporting the monitor.

Screen Handling Caution

Avoid touching the screen to prevent damage.

Installation and Safety

Electrical Safety During Installation

Unplug before installation; use grounded outlet.

Stand and Angle Adjustments

Stand Height Adjustment

Finger Safety Warning

Keep fingers clear of moving parts during height adjustment.

Screen Angle Adjustment

Pivot Feature Operation

Rotating Monitor 90 Degrees

Procedure for rotating the monitor.

Scratch Prevention Warning

Pivot Feature Steps and Notes

Monitor Angle Adjustment for Pivot

Completing 90-Degree Rotation

Final step for rotating the monitor.

Wall Mounting Specifications and Safety

VESA Mounting Screw Standards

Screw Length Importance

Mounting Safety Cautions

Risks of electrical shock and improper mounting.

Monitor Usage Guidelines

Initial Monitor Setup

Basic steps for using the monitor.

Screen Usage Caution

PC Connectivity Options

HDMI Connection for PC

Caution: HDMI Cable Quality

DisplayPort Connection for PC

AV and Peripheral Connectivity

HDMI Connection for AV Devices

USB Device Connection

Using the monitor's USB hub.

Caution: USB Device Compatibility

User Settings and Menu Navigation

Activating the Main Menu

Procedure to access the monitor's main menu.

Joystick Button Menu Functions

Mapping joystick actions to menu features.

Main Menu Features Overview

Input and Power Controls

Settings and Game Mode Access

Accessing screen settings and game modes.

User Settings Navigation Guide

Main Menu and Game Mode

Accessing main menu and game mode settings.

Game Adjust and Picture Adjust

Adjusting game-related and picture settings.

Detailed Settings Explanations

Game and Picture Adjustments

Explanations for game and picture settings.

Input and General Settings

SDR Game Mode Options

Customizable Game Modes

Gamer 1/2 modes for custom settings.

Game-Specific Optimized Modes

FPS, RTS modes optimized for specific games.

HDR Game Mode Options

Customizable HDR Game Modes

HDR Gamer 1/2 modes for custom settings.

HDR Game-Specific Modes

HDR FPS, RTS for game optimization.

Game Adjustments Guide

Adaptive-Sync Functionality

Synchronizes refresh rates for smooth images.

Adaptive-Sync Requirements

Supported interfaces and graphic cards for Adaptive-Sync.

Black Stabilizer Feature

Improves visibility in dark scenes.

Advanced Game Adjustments

Response Time Settings

Adjusting response time for motion clarity.

Cross Hair Feature

On-screen aiming reticle for FPS games.

Picture Adjustments Guide

Basic Picture Controls

Color and Gamma Settings

Contrast and Brightness Enhancements

Input Settings

Input List Selection

Aspect Ratio Adjustment

Troubleshooting Common Issues

No Display or Signal Problems

Resolving blank screens and no signal errors.

Resolution and Driver Issues

Troubleshooting resolution errors and driver installation.

Disabled Feature Resolution

Screen Display Issues

Image Retention Prevention

Unstable Display Troubleshooting

Addressing display instability and flickering.

Color and Audio Troubleshooting

Display Color Discoloration

Audio Output Troubleshooting

Product Specifications Overview

Screen and Resolution Specifications

Power and Adapter Specifications

Factory Support Modes

Preset Display Modes

HDMI;DisplayPort Timing Support

HDMI Timing (Video) Specifications

Video Preset Mode Timings

HDMI Compatibility Mode Status

LG UltraGear 27GL850-B Specifications

General IconGeneral
Screen Size27 inches
Resolution2560 x 1440
Panel TypeIPS
Response Time1ms (GtG)
Aspect Ratio16:9
Brightness350 cd/m²
Contrast Ratio1000:1
HDRHDR10
Adaptive SyncNVIDIA G-SYNC Compatible, AMD FreeSync
Ports2x HDMI, 1x DisplayPort, 2x USB 3.0
VESA Mount100 x 100 mm
Color GamutDCI-P3 98%
Display TechnologyLED
Refresh Rate144Hz
FeaturesBlack Stabilizer, Dynamic Action Sync
Weight6.1 kg (with stand)

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