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Troubleshooting For Simple Failures - NEC NLT-26XT3 Operation Manual

Lcd color television

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T roubleshooting for Simple Failures
When you meet the following common problems, you might diagnose and get the solutions without contacting
with the technicians.
Symptoms
No picture, no sound, and no
indicator light on
Picture and sound with abnormality
Picture is spotted or with snow
No picture, no sound and
indicator light is green
Blue screen, AV or SVIDEO is
displayed
Picture is unclear or shaking or
with black horizontal strips (in
VGA mode)
VGA picture is not centered
No sound
VGA
picture
display
improper color
HDMI source, with snow pixel of
full screen
The remote control does not work
No sound or loud noise i n TV
source
Picture color is abnormal
If you expect to leave your TV dormant for a long time(such as a vacation), it's a good idea to unplug the
power cord to protect against possible damage from lightning or power surges.
Possible Reason
1.The powe r cord is not plugged in
2.The powe r is off
1.Contrast, sharpness, and color temp
are set improperly
2.Color system is set improperly
3.Sound s yst em is set improperly
Signal source is low-grade or the signal
cord is in a lowe r quality
Contrast,
brightness,
volume are all in the minimum value
or TV is in mute mode.
The signal cable is not correctly
connected.
There is no signal input or the video
cable is not connected or incorrectly
connected
VGA picture is not correctly adjusted.
There is no audio signal input or audio
cable is not connected correctly
with
The color temp is adjusted incorrectly
by user
The source ge nerate is not standard
Batteries are improperly installed or
exhausted
The TV signal is not standard or too
weak
Color system is setup incorrectly
1.Plug the powe r cord in
2.Turn the power on
1.Adjust the value of Contrast,
2.Set the Color system to the
3.Set the Sound s ystem to the
Use the qualified signal cord
color
and
Adjust the
brightness, color and volume
Connect
correctly
Connect
correctly
Enter into "Display" menu,
select "Auto Adjust" item to
perform automatic calibration
and adjust "Phase" to solve the
problem
Connect
correctly
Readjust the
select the original color setting
Plug the HDMI cable again
1.Make sure the positive and the
2.Check if there is a loose contact
3.Replace the batteries
Change the sound system in the
Change the color system in the
18
Solutions
sharpness, and color temp
country broadcasting standard
country broadcasting standard
value of contrast,
the
signal
the
video
the
audio
color temp, or
negative polarities are corr ect.
between the batteries and the
springs
Tune menu
Tune menu
cable
cable
cable

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