LG 34UC87 User Manual (English)

Questions and Answers:

S
Sarah Guerrero PhDJul 27, 2025
What to do if nothing is displayed on my LG 34UC87 screen?
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  Craig BenderJul 27, 2025
  If nothing is displayed on your LG Monitor screen, try the following: - Ensure the power cord is correctly plugged into the power outlet. - Verify the power cable connection and press the power button. - Check that the connected input is enabled via Menu - Input. - If the monitor is in power-saving mode, move the mouse or press any key on the keyboard. - Confirm that the computer is turned on. - If the signals from the PC are out of the monitor's frequency range, check the Product Specification section of this manual to set the appropriate frequency. - Check the signal cable between the PC and monitor, reconnecting if necessary. - If you are using a Mac product, DisplayPort 1.2 may not be supported, please contact the manufacturer.
C
Christopher BeckJul 31, 2025
How to fix no sound from the headphone port on LG Monitor?
- T
  Trevor GloverJul 31, 2025
  If there is no sound from the headphone port on your LG Monitor, ensure the headphone port connections are properly made. Also, try increasing the volume using the joystick. Lastly, set the audio output of the PC to the monitor you are using by going to Control Panel > Hardware and Sound > Sound and setting the monitor as the default device.
V
valenciafrankAug 6, 2025
What to do if LG 34UC87 screen display is unstable and shaky?
- E
  Emma MendozaAug 6, 2025
  If your LG Monitor's screen display is unstable and shaky, and 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.
C
Christine SnyderAug 11, 2025
Why is the display color abnormal on my LG 34UC87 Monitor?
- Y
  youngkarenAug 11, 2025
  If the display color is abnormal on your LG Monitor, you can try the following solutions: - Set the color to 24 bit (true color) or higher via Control Panel > Display > Settings > Color Quality. - Check if the signal cable is properly connected; reconnect the cable or reinsert the PC's video card. - Note that pixilated spots (red, green, blue, white, or black) may appear, which is normal for an LCD screen and not related to performance.
B
bowmandebraAug 16, 2025
Why does my LG Monitor screen retain an image?
- M
  Mrs. Stephanie Williams DVMAug 16, 2025
  Displaying a still image for a prolonged time may cause damage to the screen of your LG Monitor, resulting in image retention. To extend the monitor's lifespan, use a screensaver.
J
Jared MillerAug 20, 2025
How to turn off OSD Lock message on LG Monitor?
- J
  Jason SmithAug 20, 2025
  To turn off the OSD Lock message on your LG Monitor, navigate to Menu > Settings and set OSD Lock to Off.

LG 34UC87 Specifications

General

3D	No
HD type	-
Aspect ratio	21:9
Display surface	Matt
Display diagonal	34 \
Display technology	LED
Contrast ratio (typical)	1000:1
Display number of colors	1.073 billion colors
Display brightness (typical)	300 cd/m²
Supported graphics resolutions	3440 x 1440
On/off switch	Yes
USB hub version	3.2 Gen 1 (3.1 Gen 1)
VGA (D-Sub) ports quantity	0
RMS rated power	14 W
Product color	Black
LED indicators	Power
Panel mounting interface	100 x 100 mm
Power consumption (off)	0.3 W
Annual energy consumption	79 kWh
Power consumption (standby)	- W
Power consumption (typical)	54 W

Weight and Dimensions

Depth (with stand)	225.6 mm
Height (with stand)	472.9 mm
Depth (without stand)	99 mm
Width (without stand)	830.5 mm
Height (without stand)	370.3 mm
Weight (without stand)	- g