LG 27UK850 User Manual

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www.lg.com

Please read the safety information carefully before using the product.

IPS LED Monitor (LED Monitor) Model List

OWNER'S MANUAL

IPS LED MONITOR

(LED MONITOR*)

*LG LED Monitors are LCD Monitors with LED Backlighting.

27UK850

27BK85U

Table of Contents

Questions and Answers:

K
Katherine MoodyJul 28, 2025
What to do if nothing is displayed on my LG 27UK850 Monitor screen?
- M
  Mr. Daniel MooreJul 28, 2025
  If nothing is displayed on your LG Monitor, try these steps: First, ensure the power cord is properly connected to the power outlet. Next, verify the power cable connection and press the power button. Also, check that the connected input is enabled by going to Settings > Input > Input list. If the issue persists, the signals from your PC's graphics card might be outside the monitor's frequency range; refer to the Product Specification section of the manual to set the correct frequency. Finally, check the signal cable between your PC and the monitor to ensure it's properly connected.
A
Ashlee SmithAug 1, 2025
How to fix no sound from my LG 27UK850 Monitor headphone port?
- B
  Brian KrauseAug 1, 2025
  If there is no sound from the headphone port or speaker of your LG Monitor, first, try increasing the volume using the button on the monitor. If that doesn't work, set the audio output of your PC to the monitor. In Microsoft Windows, go to Control Panel > Hardware and Sound > Sound and set the monitor as the default device.
J
Jeffrey HowardAug 5, 2025
Why is my LG 27UK850 screen display unstable and shaky?
- S
  Stephen Barnett PhDAug 5, 2025
  If your LG Monitor's screen display is unstable, shaky, or images leave shadow trails, it might be due to the selected resolution being HDMI 1080i 60/50 Hz (interlaced). To resolve this, change the resolution to 1080P or the recommended resolution.
S
Sarah BooneAug 9, 2025
What to do if my LG 27UK850 is unrecognized?
- K
  Kyle WattsAug 9, 2025
  If you see an "Unrecognized monitor, Plug&Play (VESA DDC) monitor found" message on your LG Monitor, install the display driver from the LG website: http://www.lg.com. Also, ensure that your video card supports the Plug&Play function.
L
Lauren LunaAug 14, 2025
Why does my LG Monitor screen retain an image?
- S
  scottmeganAug 14, 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
Anthony WellsAug 18, 2025
Why is the display color abnormal on my LG Monitor?
- M
  Mr. Shawn MeyersAug 18, 2025
  If the display color on your LG Monitor appears abnormal, try setting the color to 24 bit (true color) or higher via Control Panel > Display > Settings > Color Quality in Windows. Also, check the signal cable connection, reconnecting it or reinserting the PC's graphics card. Note that pixilated spots (red, green, blue, white, or black) may appear on the screen, which is normal for an LCD screen and not an error related to the monitor's performance.
D
Derek FranklinAug 23, 2025
How to turn off OSD lock on LG 27UK850 Monitor?
- F
  Frank ConnerAug 23, 2025
  If the OSD lock message is displayed on your LG Monitor, go to Settings > General and set OSD Lock to Off.

LG 27UK850 Specifications

General

DDC/CI	Yes
Pixel pitch	0.1554 x 0.1554 mm
Screen shape	Flat
Display surface	Matt
Display diagonal	27 \
Display technology	LED
Native aspect ratio	16:9
Peak luminance ratio	88 %
sRGB coverage (typical)	99 %
Display brightness (min)	280 cd/m²
Display number of colors	-
Digital vertical frequency	56 - 61 Hz
Digital horizontal frequency	30 - 135 kHz
Display brightness (typical)	450 cd/m²
Supported graphics resolutions	3840 x 2160
Dynamic contrast ratio marketing name	Mega Contrast
USB hub version	3.2 Gen 1 (3.1 Gen 1)
USB upstream port type	USB Type-C
RMS rated power	10 W
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (off)	0.3 W
Power consumption (standby)	0.5 W
Power consumption (typical)	41 W
Tilt angle range	-5 - 20 °
Number of OSD languages	18
Panel mounting interface	100 x 100 mm
Product color	Black, Silver
Package depth	208 mm
Package width	690 mm
Package height	492 mm
Package weight	9000 g
Cables included	AC, DisplayPort, HDMI, USB Type-C

Weight and Dimensions

Depth (with stand)	234.2 mm
Height (with stand)	559.5 mm
Weight (with stand)	6100 g
Depth (without stand)	44.6 mm
Width (without stand)	613.1 mm
Height (without stand)	364.4 mm
Weight (without stand)	4800 g

Summary

Assembling and Preparing the Monitor

Product Components Overview

Component and Button Description

Joystick Button Usage

Moving and Lifting Safety

Monitor Stand Assembly

Step-by-step guide for assembling the monitor stand base.

Desk Installation Guide

Guide for placing and connecting the monitor safely on a table or desk.

Detaching Stand and Wall Mounting

Steps for detaching the stand and preparing for wall mount installation.

Using the Monitor

Connecting to a PC

Explains Plug and Play feature and PC connection methods.

DisplayPort and HDMI Connections

Instructions for connecting the monitor using DisplayPort and HDMI cables.

USB-C Connection Guide

Details connecting the monitor to a PC using a USB-C cable.

Connecting AV Devices via HDMI

USB Hub and Peripheral Connections

Using the monitor's USB ports to connect peripherals like keyboards and mice.

User Settings and Configuration

Accessing the Main Menu

Step-by-step guide to activate and navigate the monitor's On-Screen Display (OSD) menu.

Main Menu Features Overview

Navigating and Configuring Settings

Instructions on how to use the joystick to navigate and change OSD settings.

Quick Settings: Brightness, Volume, Color

Details settings for Brightness, Contrast, Volume, Color Temperature, and MaxxAudio.

Input and Aspect Ratio Settings

Picture Mode Settings (SDR/HDR)

Explains various picture modes optimized for SDR and HDR content.

Picture Adjust: Basic Controls

Adjustments for screen brightness, contrast, sharpness, and black level.

Advanced Picture Adjustments

Game Adjust and Color Settings

Configuration for response time, FreeSync, gamma, and detailed color adjustments.

Sound Settings and MaxxAudio

General Settings: Language, Power, OSD

Configures language, energy saving, power LED, standby, DP 1.2, buzzer, and OSD lock.

Troubleshooting Common Issues

No Display or OSD Lock Issues

Screen Image Retention and Stability

Graphics, Resolution, and Color Problems

Monitor Recognition and Audio Issues

Product Specifications

LCD Screen and Resolution Specs

Video Signal and Input Connector Details

Power Consumption and Adapter Specs

Factory Support Modes (HDMI, DP/USB-C)

HDMI Video Timing and Power LED

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