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7.2. Troubleshooting
Symptom
Possible Cause
Remedy
No picture is displayed
1. The power cord is
disconnected.
2. The main power
switch on the back
of the display is not
switched on.
3. The selected input
has no connection.
4. The display is in the
standby mode.
1. Plug in the power cord.
2. Make sure that the power switch is
switched on.
3. Connect a signal connection to the
display.
Interference displayed on
the display or an audible
noise is heard
Caused by surrounding
electrical appliances or
fluorescent lights.
Move the display to another location to
see if the interference is reduced.
Color is abnormal
The signal cable is not
connected properly.
Make sure that the signal cable is
attached firmly to the back of the
display.
Picture is distorted with
abnormal patterns
1. The signal cable
is not connected
properly.
2. The input signal
is beyond the
capabilities of the
display.
1. Make sure that the signal cable is
attached firmly.
2. Check the video signal source
to see if it is beyond the range
of the display. Please verify its
specifications with this display’s
specification section.
Can hear sound, but no
picture
Source signal cable is
connected improperly.
Make sure that both video inputs and
sound inputs are correctly connected.
Can see picture but no
sound is heard
1. Source signal
cable is connected
improperly.
2. Volume is turned all
the way down.
3.
[
]
is turned on.
4. No external speaker
is connected.
1. Make sure that both video inputs
and sound inputs are connected
correctly.
2. Press
[ ]
or
[ ]
button to hear
sound.
3. Switch MUTE off by using the
[
]
button.
4. Connect external speakers and
adjust the volume to a suitable
level.
Some picture elements
do not light up
Some pixels of the
display are off.
This display is designed using an
extremely high level of precision
technology: however, sometimes some
pixels of the display may not display.
This is not a malfunction..
