LG 27BL55U User Manual (English)

Other manuals for LG 27BL55U

Service Manual34 pages

Manual8 pages

Questions and Answers:

K
kathryn08Sep 4, 2025
What to do if my LG 27BL55U screen display is unstable and shaky?
- S
  Steven BeckerSep 4, 2025
  If your LG monitor's screen display is unstable or shaky, or if images displayed on the monitor 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. Also, not setting the graphics card to the recommended (optimal) resolution may result in blurred text, a dimmed screen, a truncated display area or misalignment of the display.
B
Bradley HenryAug 25, 2025
How to fix LG 27BL55U when images are displayed without sound?
- M
  Mary PattonAug 25, 2025
  If images are displayed without sound on your LG Monitor, ensure that the headphone port connections are properly made. Try increasing the volume using the joystick. Additionally, set the audio output of your PC to the monitor you are using; note that the settings may differ depending on your operating system.
A
Adam NielsenAug 25, 2025
Why is my LG 27BL55U screen display unstable and shaky?
- R
  regina25Aug 26, 2025
  An unstable or shaky display, or images leaving shadow trails on your LG Monitor, may occur if the selected resolution is HDMI 1080i 60/50 Hz (interlaced). Try changing the resolution to 1080p or the recommended resolution. If your graphics card isn't set to the optimal resolution, it may cause blurred text, a dimmed screen, a truncated display area, or misalignment. Setting methods vary, and some resolutions might not be available depending on your graphics card's performance.
H
hayersAug 27, 2025
How to fix LG Monitor when nothing is displayed on the screen?
- J
  James MillerAug 27, 2025
  If nothing is displayed on your LG Monitor screen, first, ensure the power cord is correctly plugged into the power outlet. Next, verify the power cable connection and press the power button. Then, check that the connected input is enabled in the monitor settings (Settings > Input). If the issue persists, inspect the signal cable between your PC and the monitor, ensuring it's properly connected. Lastly, confirm that the signals transferred from your PC (graphics card) are within the horizontal or vertical frequency range supported by the monitor. Refer to the Product Specification section of the manual to set the appropriate frequency.
A
Aaron PerkinsAug 27, 2025
Why is there no sound on my LG Monitor?
- F
  Faith BeasleyAug 27, 2025
  If images are displayed without sound on your LG Monitor, ensure that the headphone port connections are correctly made. You can also try increasing the volume using the joystick on the monitor. Finally, set the audio output of your PC to the monitor you are using. Note that the exact settings may vary depending on your operating system.
C
Carla HowardAug 28, 2025
Why is nothing displayed on my LG 27BL55U screen?
- D
  Douglas AndrewsAug 28, 2025
  There could be several reasons why nothing is displayed on your LG monitor's screen. First, ensure the power cord is correctly plugged into the power outlet and that the power cable connection is secure, then press the power button. Also, verify that the connected input is enabled in the monitor's settings under the Input section. This issue can also occur if the signal cable between your PC and the monitor is either missing or disconnected, so check the cable and reconnect it securely. Finally, the signals transferred from the PC (graphics card) might be out of the monitor's horizontal or vertical frequency range. Refer to the Product Specification section of the manual to set the appropriate frequency.
M
marioschmidtSep 9, 2025
How to prevent image sticking on my LG 27BL55U?
- C
  Carlos ThompsonSep 9, 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.
M
malonejulieSep 5, 2025
How to fix 'Unrecognized monitor, Plug and Play (VESA DDC) monitor found' message on LG 27BL55U Monitor?
- R
  richardsonmichaelSep 5, 2025
  If you see an "Unrecognized monitor, Plug and Play (VESA DDC) monitor found" message on your LG Monitor, be sure to install the display driver from the LG website. Also, make sure to check if the graphics card supports Plug and Play function.
R
randydavisSep 3, 2025
What to do if LG 27BL55U Monitor screen display is unstable and shaky?
- L
  Lorraine FosterSep 3, 2025
  If the screen display on your LG Monitor is unstable and shaky, or if images leave shadow trails, and the resolution is set to HDMI 1080i 60/50 Hz (interlaced), the screen may be flickering. Try changing the resolution to 1080p or the recommended resolution. In addition, not setting the graphics card to the recommended (optimal) resolution may result in blurred text, a dimmed screen, a truncated display area, or misalignment of the display. The setting methods may be different depending on the computer or operating system, and some resolutions may not be available depending on the performance of the graphics card. If this is the case, contact the manufacturer of the computer or graphics card for assistance.
V
voconnellSep 1, 2025
What to do if images are displayed without sound on my LG Monitor?
- M
  Mary StevensSep 1, 2025
  If images are displayed without sound on your LG Monitor, ensure the following: * The headphone port connections are properly made. * Increase the volume using the joystick. * Set the audio output of the PC to the monitor you are using. Note that the settings may differ depending on your operating system.

LG 27BL55U Specifications

General

Screen Size	27 inches
Panel Type	IPS
Aspect Ratio	16:9
Response Time	5 ms
Refresh Rate	60 Hz
Contrast Ratio	1000:1
VESA Mount	100 x 100 mm
Connectivity	HDMI, DisplayPort, USB-C
Viewing Angle	178°
Color Gamut	99% sRGB
Resolution	3840 x 2160