LG 34BL85C-B - User Manual

Questions and Answers

R
Robert WardJul 28, 2025
How to fix an LG Monitor when nothing is displayed on the screen?
- J
  Jeffrey RodriguezJul 28, 2025
  If nothing is displayed on your LG Monitor screen, ensure the power cord is correctly plugged into the power outlet. Also, verify the power cable connection and press the power button. Check that the connected input is enabled in the monitor settings. If the signal cable between your PC and the monitor is missing or disconnected, check the cable and reconnect it. If the signals from your PC are out of the monitor's frequency range, consult the Product Specification section of the manual to set the appropriate frequency.
A
amartinAug 2, 2025
Why is my LG 34BL85C-B screen display unstable and shaky?
- L
  Lori SmithAug 2, 2025
  If the screen display on your LG Monitor is unstable and shaky, or if images leave shadow trails, the selected resolution might be HDMI 1080i 60/50 Hz (interlaced). Try changing the resolution to 1080p or the recommended resolution. Note that not setting the graphics card to the recommended resolution may result in blurred text, a dimmed screen, a truncated display area, or misalignment of the display. Setting methods vary depending on the computer or operating system, and some resolutions may not be available depending on the performance of the graphics card.
C
Cindy McguireAug 7, 2025
Why is there no sound from the headphone port on my LG Monitor?
- K
  Kevin MorenoAug 7, 2025
  If there is no sound from the headphone port on your LG Monitor, ensure that the headphone port connections are properly made. Try increasing the volume using the joystick. Also, set the audio output of your PC to the monitor you are using. Note that the settings may differ depending on your operating system.
E
Edward HowellAug 12, 2025
How to unlock the menu on my LG 34BL85C-B Monitor?
- W
  wchangAug 12, 2025
  If some functions are unavailable when you press the Menu button on your LG Monitor, the OSD might be locked. To resolve this, disable OSD Lock in the General settings.
C
Corey HoustonAug 18, 2025
What to do if my LG Monitor shows an "Unrecognized monitor, Plug and Play (VESA DDC) monitor found" message?
- J
  Joseph FosterAug 18, 2025
  If you see an "Unrecognized monitor, Plug and Play (VESA DDC) monitor found" message on your LG Monitor, install the display driver from the CD or diskette that came with your display, or download it from the LG website. Also, ensure that your graphics card supports the Plug and Play function.
M
Michelle RhodesAug 23, 2025
How to prevent image sticking on my LG 34BL85C-B?
- J
  Jennifer NelsonAug 23, 2025
  Displaying a still image for a prolonged time may cause damage to the screen of your LG Monitor. To extend the monitor's lifetime, use a screensaver.

Summary

Assembling and Preparing

Safety Precautions for Assembly

Moving and Lifting the Monitor

Handling and Transport Warnings

Installing on a Table

Power Connection Safety

Adjusting the Stand Height

Screen Height Adjustment Warning

Adjusting the Angle

Screen Angle Adjustment Warning

Installing the Wall Mount Plate

Installing on the Wall

Wall Mounting Safety and Screw Guidelines

Using the Monitor

Connecting to a PC

HDMI Connection

DisplayPort Connection

Connecting AV Devices

Connecting Peripherals

USB Device Usage Cautions

User Settings

Activating the Main Menu

Steps to activate and navigate the main menu (OSD).

Main Menu Features

Main Menu Options

Overview of the main menu options like Input, Power Off, Settings, Picture Mode, Exit.

Menu Navigation Settings

Detailed steps for navigating and adjusting settings within the OSD menu.

Quick Settings

Quick Settings Brightness;Contrast

Adjusting screen brightness and contrast levels for optimal viewing.

Quick Settings Volume

Adjusting the audio volume level of the monitor.

Quick Settings Color Temperature

Setting the screen color temperature (Custom, Warm, Medium, Cool, Manual).

Input Settings

Main Input List Selection

Selecting the active input source for the monitor.

Aspect Ratio Adjustment

Adjusting how the image fits the screen (Full Wide, Original, Just Scan, Cinema).

Picture Settings

Picture Mode (SDR) Settings

Selecting preset picture modes for SDR signals (Vivid, HDR Effect, Reader, Cinema, FPS, RTS, Color Weakness).

Picture Mode (HDR) Settings

HDR Picture Mode Settings

Selecting preset picture modes for HDR signals (Custom, Vivid, Standard, Cinema, FPS, RTS).

Picture Adjust

Picture Adjust Brightness;Contrast

Adjusting screen brightness and contrast levels.

Picture Adjust Sharpness

Adjusting the sharpness of the screen image.

SUPER RESOLUTION+ Feature

Black Level Adjustment

Game Adjust Settings

Game Adjust Response Time

Setting the response time for smoother motion in games.

Game Adjust Black Stabilizer

Enhancing visibility in dark scenes by adjusting black contrast.

Color Adjust Settings

Color Adjust Gamma

Adjusting gamma settings to control image brightness and darkness.

Color Adjust Color Temperature

Customizing color temperature settings for the screen.

Color Adjust Red;Green;Blue

Customizing picture color using red, green, and blue channels.

Color Adjust Six Color

Adjusting hue and saturation for six specific colors.

Picture Reset

Sound Settings

Sound Volume Adjustment

Adjusting the monitor's volume level.

General Settings

HDMI Compatibility Mode

HDMI Compatibility Mode Function

OSD Lock

Reset to Initial Settings

Reset Settings Confirmation

Troubleshooting

Troubleshooting: No Screen Display

Steps to resolve issues where the screen remains blank.

Troubleshooting: Unstable Display or Ghosting

Troubleshooting unstable display or ghosting effects.

Troubleshooting: Image Sticking

Troubleshooting: Screen Spots

Troubleshooting: Disabled Features

Troubleshooting: Unrecognized Monitor Message

Driver Installation for Unrecognized Monitor

Troubleshooting: No Sound from Headphone Port

Audio Output Troubleshooting

LG 34BL85C-B Specifications

General

Screen Type	lcd
Wall Mount	100mm x 100mm
Webcam	no
OS Compatibility	windows
Screen Size	34 inches
Panel Type	not applicable
Aspect Ratio	21:9
Resolution	3440 x 1440
Refresh Rate	75hz
Response Time	5 milliseconds
Brightness	300 candela per square meter
Contrast Ratio	1000:1
Synchronization	not applicable
HDR	yes
Built-In Speakers	yes
HDMI Ports	2
USB Type B Ports	1
Width with Stand	32.04 inches
Net Weight without Stand	17.63 pounds