Troubleshooting - LG 29UM65 Owner's Manual

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TROUBLESHOOTING

TROUBLESHOOTING
Nothing is displayed on the screen.
Is the monitor's power cord plugged
in?
Is the power indicator on?
Is the power indicator displaying ?
Is the power indicator blinking?
Is the "OUT OF RANGE" message
displayed?
Is the "CHECK SIGNAL CONNEC-
TION" message is displayed?
The screen retains an image.
Does image sticking occur even
when the monitor is turned off?
The screen is flickering.
Did you select the recommended
resolution?
NOTE
Vertical Frequency: In order to display an image, the screen must be refreshed dozens of times per
y y
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.
Horizontal Frequency: The time it takes to display one horizontal line is called the horizontal cycle.
y y
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.
y Check if the power cord is correctly plugged in to the power outlet.
y Check the power cable connection and press the power button.
y Check that the connected input is enabled (Menu - Input).
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.
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.
y This is displayed when the signal cable between the PC and the moni-
tor is missing or disconnected. Check the cable and reconnect.
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 If the selected resolution is HDMI 1080i 60/50 Hz, the screen
may be flickering. Change the resolution to the recommended
resolution 1080P.