LG 27UK650 User Manual (English)

Questions and Answers:

B
bwaltersJul 27, 2025
What to do if nothing is displayed on my LG 27UK650 screen?
- K
  Kenneth KennedyJul 27, 2025
  If nothing is displayed on your LG Monitor screen, try these steps: First, ensure the power cord is correctly plugged into the power outlet. Then, check the power cable connection and press the power button. Also, verify that the connected input is enabled by going to Settings > Input > Input list. If the problem persists, and signals transferred from the PC are out of the monitor's frequency range, refer to the Product Specification section of this manual to set the appropriate frequency. Finally, check the signal cable between the PC and the monitor and reconnect it if it's missing or disconnected.
B
Brenda ReynoldsJul 31, 2025
What to do if the screen display is unstable and shaky on my LG 27UK650?
- M
  Mitchell GarciaAug 1, 2025
  If your LG Monitor's screen display is unstable and shaky, or images leave shadow trails, and the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen may be flickering. Try changing the resolution to 1080P or the recommended resolution.
W
williamsmarissaAug 5, 2025
Why is there no sound from the headphone port on my LG 27UK650?
- K
  kyle53Aug 5, 2025
  If there is no sound from the headphone port on your LG Monitor, first, try increasing the volume using the button on the monitor. If that doesn't work, set the audio output of the PC to the monitor you are using. On Microsoft Windows, go to Control Panel > Hardware and Sound > Sound > set the monitor as default device.
J
Joshua BergerAug 8, 2025
Why is the display color abnormal on my LG 27UK650 Monitor?
- S
  Sabrina SmithAug 9, 2025
  If the display color on your LG Monitor is abnormal, you can try the following: 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 connected properly; try 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.
B
Brian JacksonAug 13, 2025
Why does my LG 27UK650 Monitor retain an image?
- G
  gilbertkatherineAug 13, 2025
  Displaying a still image for a prolonged time may cause damage to the screen of your LG Monitor, resulting in the retention of the image. To extend the lifetime of the monitor, use a screensaver.
W
William BallardAug 17, 2025
How to fix the OSD lock message on my LG 27UK650?
- L
  Lauren LucasAug 17, 2025
  To remove the OSD lock message on your LG Monitor, navigate to Settings > General and set OSD Lock to Off.
A
Anna LaneAug 22, 2025
How to solve 'Unrecognized monitor, Plug&Play (VESA DDC) monitor found' message on LG 27UK650?
- G
  Grant KelleyAug 22, 2025
  To resolve the 'Unrecognized monitor, Plug&Play (VESA DDC) monitor found' message on your LG Monitor, first, be sure to install the display driver from the LG website. Also, make sure to check if the video card supports Plug&Play function.

LG 27UK650 Specifications

General

Screen Size	27 inches
Resolution	3840 x 2160 (4K UHD)
Panel Type	IPS
Aspect Ratio	16:9
Refresh Rate	60Hz
Brightness	350 cd/m²
Contrast Ratio	1000:1
Response Time	5 ms (GTG)
HDR	HDR10
Color Gamut	sRGB 99%
Inputs	2x HDMI, 1x DisplayPort
VESA Mount	100 x 100 mm
Headphone Out	Yes
AMD FreeSync	Yes
Viewing Angle	178° (H) / 178° (V)

Summary

LICENSE

ASSEMBLING AND PREPARING

Product Components

Lists all the components included in the box for the monitor.

CAUTION

Important safety and performance notes regarding component usage.

Supported Drivers and Software

Component and Button Description

How to Use the Joystick Button

Explains how to operate the monitor using the joystick button.

Input Connector

Moving and Lifting the Monitor

CAUTION (Screen Handling)

Warnings about touching the screen and handling the monitor to prevent damage.

CAUTION (Stability)

Warning about using the monitor without a stand base causing instability.

Installing the Monitor

Assembling the stand base (27UK650)

Step-by-step guide to assemble the monitor stand base for 27UK650.

CAUTION

Cautionary advice to avoid injury during stand assembly.

Installing the Monitor (cont.)

Assembling the stand base (27UK600)

Step-by-step guide to assemble the monitor stand base for 27UK600.

CAUTION (Assembly Force)

Warning about applying excessive force when tightening screws.

Using the cable holder

CAUTION (Handling)

Various cautions related to handling, lifting, and assembling the monitor.

Installing onto a table

Adjusting the angle

Instructions on how to adjust the monitor screen's viewing angle.

Adjusting the Stand Height

WARNING (Finger Injury)

Warning about finger injury when adjusting the screen height.

WARNING (Screen Area)

Warning about not touching the screen area while adjusting angle.

Pivot Feature

WARNING (Scratch Prevention)

Caution to avoid scratching the stand base when rotating the monitor.

Using the Kensington lock

WARNING (Cable Rotation)

Warnings about rotating the monitor with cables connected and finger placement.

Installing the wall mount plate

Installing to a wall

Instructions for installing the monitor onto a wall, including spacing.

WARNING (Screw Length)

Warnings about using incorrect screw lengths for wall mounting.

Wall Mount (A x B)

CAUTION (Mounting Safety)

Cautions regarding unplugging power, improper installation, and screw use.

USING THE MONITOR

Connecting to a PC

Explains how to connect the monitor to a PC for display.

DisplayPort connection

Describes connecting the monitor via DisplayPort for video and audio.

HDMI connection

Describes connecting the monitor via HDMI for PC and AV devices.

Connecting to AV Devices

Connecting Headphones

Instructions for connecting headphones to the monitor's audio port.

USER SETTINGS

Activating the Main Menu

Step-by-step guide to access and navigate the monitor's main menu.

User Settings

Menu Settings

Detailed explanation of how to navigate and configure menu settings.

Settings > Quick Settings

Details on adjusting brightness, contrast, volume, and color temperature.

Picture Mode on SDR(Non-HDR) signal

Settings > Picture

Explains various picture modes for SDR content.

Picture Adjust

Brightness

Adjusts the brightness of the screen.

Contrast

Adjusts the contrast of the screen.

Sharpness

Adjusts the sharpness of the screen.

SUPER RESOLUTION+

Enhances picture quality for clear images, effective for high-quality video/games.

Game Adjust

Response Time

Sets response time for displayed pictures based on screen speed.

FreeSync

Synchronizes input signal frequency for seamless, natural images.

Settings > General

SMART ENERGY SAVING

Saves energy using efficiency saving features.

Automatic Standby

Automatically turns off the monitor when there is no screen movement.

OSD Lock

Disables the configuration and adjustment of menus.

TROUBLESHOOTING

Nothing is displayed on the screen

Troubleshooting steps for when the screen remains blank.

Screen display is unstable and shaky / Images displayed on the monitor leave shadow trails

Troubleshooting unstable or shaky screen display.

NOTE (Troubleshooting Continuation)

The display color is abnormal

Troubleshooting steps for abnormal display colors.

No sound from the headphone port

Troubleshooting steps for no sound from the headphone port.

SPECIFICATIONS

27UK650

Technical specifications for the 27UK650 model.

SPECIFICATIONS (cont.)

27UK600

Technical specifications for the 27UK600 model.

Factory Support Mode (Preset Mode, PC)

HDMI

Lists supported display modes and frequencies for HDMI.

DisplayPort

Lists supported display modes and frequencies for DisplayPort.

HDMI Timing (Video)

Power LED

Describes the LED color and state for different power modes.

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LG 27UK650 User Manual

Table of Contents

Questions and Answers:

LG 27UK650 Specifications

Summary

LICENSE

ASSEMBLING AND PREPARING

Product Components

CAUTION

Supported Drivers and Software

Component and Button Description

How to Use the Joystick Button

Input Connector

Moving and Lifting the Monitor

CAUTION (Screen Handling)

CAUTION (Stability)

Installing the Monitor

Assembling the stand base (27UK650)

CAUTION

Installing the Monitor (cont.)

Assembling the stand base (27UK600)

CAUTION (Assembly Force)

Using the cable holder

CAUTION (Handling)

Installing onto a table

Adjusting the angle

Adjusting the Stand Height

WARNING (Finger Injury)

WARNING (Screen Area)

Pivot Feature

WARNING (Scratch Prevention)

Using the Kensington lock

WARNING (Cable Rotation)

Installing the wall mount plate

Installing to a wall

WARNING (Screw Length)

Wall Mount (A x B)

CAUTION (Mounting Safety)

USING THE MONITOR

Connecting to a PC

DisplayPort connection

HDMI connection

Connecting to AV Devices

Connecting Headphones

USER SETTINGS

Activating the Main Menu

User Settings

Menu Settings

Settings > Quick Settings

Picture Mode on SDR(Non-HDR) signal

Settings > Picture

Picture Adjust

Brightness

Contrast

Sharpness

SUPER RESOLUTION+

Game Adjust

Response Time

FreeSync

Settings > General

SMART ENERGY SAVING

Automatic Standby

OSD Lock

TROUBLESHOOTING

Nothing is displayed on the screen

Screen display is unstable and shaky / Images displayed on the monitor leave shadow trails

NOTE (Troubleshooting Continuation)

The display color is abnormal

No sound from the headphone port

SPECIFICATIONS

27UK650

SPECIFICATIONS (cont.)

27UK600

Factory Support Mode (Preset Mode, PC)

HDMI

DisplayPort

HDMI Timing (Video)

Power LED

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