Sony KV-EF34M31 Service Manual page 26

Troubleshooting (continued)
Symptom Solutions
Good picture
• Press ¸ + to increase the volume level.
• Press ¤ to cancel the muting.
• Press A/B until better sound is
heard.
No sound
Dotted lines or stripes
• Do not use a hair dryer or other
equipment near the TV.
• Adjust the antenna direction for
minimum interference. Contact a Sony
dealer for advice.
Double images or
• Use a highly directional antenna.
"ghosts"
• Adjust the antenna direction. Contact a
Sony dealer for advice.
• Turn off or disconnect the booster if it is
in use.
No color
• Display the A/V CONTROL menu and
select "ADJUST" in PICTURE MODE,
then adjust the COLOR level. (page 30)
• Display the CH. PRESET menu and
check the color system (COL SYS)
setting (usually set this to AUTO).
(page 36)
• Adjust the antenna direction. Contact a
Sony dealer for advice.
Abnormal color patches • Locate external speakers or other
equipment away from the TV. Press U
(main power) on the TV to turn off the
TV for about five minutes, then turn it
on again.
TV cannot receive stereo
• Press A/B until "AUTO" appears on
broadcast signal. the screen.
40
Additional Information
Possible cause
• The volume level is too
low.
• The sound is muted.
• The broadcast signal has a
transmission problem.
• There is local interference
from cars, neon signs, hair
dryers, power generators,
etc.
• Broadcast signals are
reflected by nearby
mountains or buildings.
• The antenna direction
needs adjustment.
• Use of a booster is
inappropriate.
• The color level setting is
too low.
• The color system setting is
inappropriate.
• The antenna direction
needs adjustment.
• There is magnetic
disturbance from external
speakers or other
equipment.
• The stereo reception setting
is inappropriate.
Symptom
Solutions
• Check the antenna cable and connection
Stereo broadcast sound
on the TV, VCR, and on the wall.
switches on and off or is
distorted.
• Adjust the antenna direction. Contact a
Sony dealer for advice.
or • Press A/B until better sound is
heard. (page 21)
The sound switches
between stereo and
monaural frequently.
"100" appears on the top
of the screen and there is
—
no Teletext display.
• Check the antenna cable and connection
Teletext display is
incomplete on the TV, VCR, and at the wall. (page 4)
(snowy picture or double
• Adjust the antenna direction. Contact a
images).
Sony dealer for advice.
• Try using a booster.
Picture slant
• Display the SET UP menu and adjust
"PIC ROTATION" so that the picture is
aligned to the TV screen. (page 33)
TV cabinet creaks.
—
A small "boom" sound is
heard when the TV is
—
turned on.
Possible cause
• The connection is loose or
the cable is damaged.
• The antenna direction
needs adjustment.
• The broadcast signal has a
transmission problem.
• The channel carries no
Teletext broadcast.
• The connection is loose or
the cable is damaged.
• The antenna direction
needs adjustment.
• The signal transmission is
too low.
• Terrestrial magnetism is
affecting your TV set.
• Changes in room
temperature sometimes
make the TV cabinet
expand or contract,
causing a noise. This does
not indicate a malfunction.
• The TV's demagnetizing
function is working. This
does not indicate a
malfunction.
41
Additional Information