ENGLISH

40TROUBLESHOOTING

TROUBLESHOOTING

Nothing is displayed on the screen.

Is the monitor's power cord plugged

y y Check if the power cord is correctly plugged in to the power outlet.

in?

 

 

 

Is the power indicator on?

y y Check the power cable connection and press the power button.

 

 

Is the power indicator displaying ?

y y Check that the connected input is enabled (Menu - Input).

 

 

Is the power indicator blinking?

y y If the monitor is in power-saving mode, move the mouse or press any

 

key on the keyboard to switch the display on.

 

y y Check if the computer is turned on.

Is the "OUT OF RANGE" message

y y This occurs when signals transferred from the PC (video card) are out

displayed?

of the horizontal or vertical frequency range of the monitor. Please see

 

 

the "Product Specification" section of this manual to set the appropri-

 

ate frequency.

Is the "CHECK SIGNAL CONNEC-

y y This is displayed when the signal cable between the PC and the moni-

TION" message is displayed?

tor is missing or disconnected. Check the cable and reconnect.

 

 

 

 

 

The screen retains an image.

 

Does image sticking occur even

y y Displaying a still image for a prolonged time may cause damage to the

when the monitor is turned off?

screen, resulting in the retention of the image.

 

 

y y Use a screen saver to protect the screen when using the monitor for a

 

prolonged period of time.

 

 

The screen is flickering.

 

Did you select the recommended

y y If the selected resolution is HDMI 1080i 60/50 Hz, the screen

resolution?

may be flickering. Change the resolution to the recommended

 

 

resolution 1080P.

 

 

NOTE

y yVertical Frequency: In order to display an image, the screen must be refreshed dozens of times per second like a fluorescent lamp.

The number of times the screen is refreshed per second is called vertical frequency or refresh rate and is represented by Hz.

y yHorizontal Frequency: The time it takes to display one horizontal line is called the horizontal cycle. The number of horizontal lines displayed in one second can be calculated by dividing one by the hori- zontal cycle. This is called horizontal frequency and is represented by kHz.

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LG Electronics 29UB55, 29UM55, 25UM55, 25UB55 Troubleshooting, Nothing is displayed on the screen, Screen retains an image
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25UB55, 25UM55, 29UM55, 29UB55 specifications

LG Electronics has long been a player in the display technology market, and its models like the 25UM55, 25UB55, 29UB55, and 29UM55 exemplify its commitment to quality and innovation. Each model offers a unique combination of features and specifications tailored to various user needs, particularly for professionals, gamers, and general consumers seeking high-performance monitors.

The LG 25UM55 is a 25-inch UltraWide display that boasts an aspect ratio of 21:9. It enhances productivity by offering ample screen real estate, making it an excellent choice for multitasking. Its In-Plane Switching (IPS) technology ensures consistent color accuracy and wide viewing angles, providing a vibrant display that remains true even from off-angles. With a Full HD resolution of 2560x1080 pixels, visuals are sharp and detailed, catering well to video editing, gaming, and design work.

The LG 25UB55, also a 25-inch UltraWide monitor, takes it a step further with 4K resolution at 3840x2160 pixels. This provides an incredibly sharp image, making it ideal for high-definition content creation and viewing. The color accuracy and HDR capabilities enhance visual experiences, allowing users to see their work in fine detail and true-to-life colors. It also supports various connectivity options, including DisplayPort and HDMI, making it versatile for connecting to different devices.

Moving to the 29UB55 and 29UM55, these models feature a larger 29-inch size, again embracing the 21:9 aspect ratio. The 29UB55 offers a similar 4K resolution, ensuring that high-end users can enjoy ultra-sharp images and vibrant colors, while the 29UM55 provides full HD options that still deliver impressive quality. These monitors are designed with gamers in mind, offering features like AMD FreeSync technology, which helps in synchronizing the display's refresh rate with the graphics card, resulting in a smoother gaming experience without tearing or stutter.

In addition to their impressive resolutions, all models come equipped with various user-oriented features. LG’s Flicker Safe technology reduces eye strain during extended use. The OnScreen Control software allows for easy adjustments, letting users modify settings like brightness, contrast, and screen division quickly.

Overall, LG's 25UM55, 25UB55, 29UB55, and 29UM55 monitors represent the brand’s dedication to delivering top-tier display solutions that cater to both professionals and everyday users. With an emphasis on cutting-edge technology and user experience, LG continues to set a high standard in the monitor market.
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