Sony BRAVIA KDL-40EX640 Operating Instructions Manual page 75

Condition
TV is locked to one
channel
Cannot receive or select
channels
The TV turns off
automatically
No picture from some
video sources
Poor picture
Picture quality not as
good as viewed at the
store
Broadcast HD formats
have poor quality
Double images or ghosts • Check cable/antenna connections.
Only snow and noise
appear on the screen
Dotted lines or stripes
No color / Dark picture /
Color is not correct / The
picture is too bright
Noisy picture
Blurry picture / Poor color • Transporting the TV from a cold to a warm location or a sudden
Explanation/Solution
• Perform Auto Program to add receivable channels that are not
present in the TV's memory (see pages 22 and 56).
• Perform Auto Program to add receivable channels that are not
present in the TV's memory (see pages 22 and 56).
• To receive or select cable channels, make sure that Signal Type
in the Channel settings is set to Cable (see page 56). To receive
or select UHF channels over an antenna, make sure Signal Type
is set to Antenna.
• Check if Sleep Timer is activated (see page 63).
• Check Idle TV Standby in the Eco settings.
• Check the connection between the optional video equipment
and the TV.
• Press INPUT on the remote control (see page 35).
• Picture quality depends on the signal content. See Quick Setup
Guide (supplied) to display the best possible picture for that
signal.
• Content and signal quality are controlled by the signal provider.
Many HD channels and content are actually upscaled versions of
standard-definition broadcasts. The picture is affected by the
quality of the signal received, which varies between channel and
program.
• Check the antenna location and direction.
• Check if the antenna is broken or bent.
• Check if the antenna has reached the end of its serviceable life.
(3-5 years in normal use, 1-2 years at the seaside.)
• Keep the TV away from noise sources such as cars, motorcycles,
or hair-dryers.
• If using 300 ohm twin lead, move the excess lead away from the
TV or try using 75-ohm coaxial cable instead.
• Adjust the Picture Mode options in the Picture settings (see
page 50).
• If you set the Power Saving mode to Low or High, it will
enhance the black level.
• Make sure that the antenna is connected using a 75-ohm coaxial
cable (not supplied).
• Keep the antenna cable away from other connecting cords.
• To avoid TV interference, make sure to use an undamaged
antenna cable.
change in room temperature may cause moisture condensation,
resulting in a blurry picture or poor color. Turn off your TV and
wait a few hours before powering on again.
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