48
Troubleshooting
Before calling a service technician, please check
the following table for a possible cause of the
symptom and some solutions.
Symptom and solution
TV will not turn on
• Make sure the power cord is plugged in,
and then press
1
.
• The remote control batteries may be dead.
Replace the batteries.
No picture, no sound
• Check the aerial connections.
No sound, picture OK
• The sound may be muted. Press
2
+, − or
.
• The station may have broadcast diffi culties.
Try another channel.
Poor sound, picture OK
• The station may have broadcast diffi culties.
Try another channel.
Poor picture, sound OK
• Check the aerial connections.
• The station may have broadcast diffi culties.
Try another channel.
• Adjust the
PICTURE
menu.
Poor reception of broadcast channels
• Check the aerial connections.
• The station may have broadcast diffi culties.
Try another channel.
• Make sure the
Colour System
is properly set.
Teletext problems
• Check the aerial connections.
Good performance of text depends on a
good strong broadcast signal.
Some pixels of the screen do not light
up
• The LCD display panel is manufactured
using an extremely high level of precision
technology, however, sometimes some
pixels of the screen may be missing picture
elements or have luminous spots. This is
not a sign of a malfunction.
The picture brightness varies when you
display switch the TV on.
• If you switch the TV on at 0°C and under,
wait until the warms up.
Multiple images
• The station may have broadcast diffi culties.
Try another channel.
• Aerial reception may be poor. Use a high
directional outdoor aerial.
• Check if the direction of the aerial has
changed.
Poor colour or no colour
• The station may have broadcast diffi culties.
Try another channel.
• Adjust the
Tint
and/or
Colour
in the
PICTURE
menu.
The remote control does not operate
• Remove all obstructions between the
remote control and the remote control
sensor on the TV.
• The remote control batteries may be dead.
Replace the batteries.
3D problems
• If 3D images are not correct, the 3D format
may be different.
Change the 3D format from
Quick Menu
(
-
page 24).
• The left and right sides of 3D images may
be reversed.
Switch the left and right (
-
page 27).
• If 2D images are not correct, the 2D format
may be different.
Change the 2D format from
Quick Menu
(
-
page 25).
• Remove all obstructions between the 3D
Glasses and the TV.
• Replace the 3D Glasses' battery.
Reference section
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Summary of Contents for 40TL20 Series
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