30
Cleaning and Troubleshooting
8.2. 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. {
Mute
} 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.
