Troubleshooting – LG 29UM65-P User Manual
Page 32
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ENG
ENGLISH
TROUBLESHOOTING
TROUBLESHOOTING
Nothing is displayed on the screen.
Is the monitor's power cord plugged
in?
y
Check if the power cord is correctly plugged in to the power outlet.
Is the power indicator on?
y
Check the power cable connection and press the power button.
Is the power indicator displaying ?
y
Check that the connected input is enabled (Menu - Input).
Is the power indicator blinking?
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
Check if the computer is turned on.
Is the "OUT OF RANGE" message
displayed?
y
This occurs when signals transferred from the PC (video card) are out
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-
TION" message is displayed?
y
This is displayed when the signal cable between the PC and the moni-
tor is missing or disconnected. Check the cable and reconnect.
The screen retains an image.
Does image sticking occur even
when the monitor is turned off?
y
Displaying a still image for a prolonged time may cause damage to the
screen, resulting in the retention of the image.
y
Use a screen saver to protect the screen when using the monitor for a
prolonged period of time.
y
Vertical 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
Horizontal 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.
NOTE
The screen is flickering.
Did you select the recommended
resolution?
y
If the selected resolution is HDMI 1080i 60/50 Hz, the screen
may be flickering. Change the resolution to the recommended
resolution 1080P.