Troubleshooting - Sony TRINITRON KV-VF21M40 Service Manual

Troubleshooting

If you have any problems while viewing your video TV, please
check the following troubleshooting guide. If the problem persists,
contact your Sony dealer.
Symptom Possible cause
TV section
The power cord or antenna
No picture/No sound
is not connected.
The video TV is not turned
on.
Good picture/No sound The volume level is too
low.
The sound is muted.
Headphones are connected
to i (headphones) jack.
No color or poor color
The color level setting is
too low.
The picture setting is
inappropriate.
The color system setting is
inappropriate.
The antenna direction,
position and angle need
adjustment.
Double images or "ghosts" Broadcast signals are
reflected by nearby
mountains or buildings.
The antenna direction,
position and angle need
adjustment.
No picture/No sound from The connecting cord
video input sources between the video TV and
the input sources is
disconnected.
Input is not selected
correctly.
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Additional Information
Solutions
Check the AC power cord and the
antenna connections.
Press ?/1 on the video TV. If the
standby indicator (1) is lit in red,
press ?/1 or a program number
button on the remote control.
Press 2 + to increase the volume
level.
Press % to cancel the muting.
Disconnect the headphones.
Adjust PICTURE, COLOR and
BRIGHT in the PERSONAL
ADJUST menu. (page 39)
Press PIC MODE to switch the
picture setting. (page 15)
Display the TV SET UP menu and
check the color system (COL SYS)
setting. (page 38)
Adjust the antenna direction,
position and angle. Contact a Sony
dealer for advice.
Use a highly directional antenna.
Adjust the antenna direction,
position and angle. Contact a Sony
dealer for advice.
Check the connection between the
video TV and the input sources.
Press t so that "t1" or "t2"
appears. (page 53)
Symptom Possible cause
Good picture/Abnormal
The TV system setting is
sound
inappropriate.
Snowy picture/Abnormal
The connection is loose or
sound
the cable is damaged.
The channel presetting is
inappropriate or
incomplete.
The antenna type is
inappropriate.
The antenna direction,
position and angle need
adjustment.
Dotted lines or stripes There is local interference
from cars, neon signs, hair
dryers, power generators,
etc.
Abnormal color patches
There is magnetic
disturbance from external
speakers or other
equipment.
Clock and timer section
The clock has The power has been
stopped and "--:--" is
interrupted or the AC
displayed.
power cord is disconnected.
Solutions
• If the sound of all the channels
is abnormal, display the TV SET
UP menu and select the
appropriate TV system (TV
SYS), then preset the channels
again. (pages 11 and 12)
• If the sound of some channels is
abnormal, display the MANUAL
PROGRAM menu in the TV SET
UP menu and select the
appropriate TV system (TV SYS)
(page 34).
Check the antenna cable and
connection on the video TV and at
the wall.
Display the TV SET UP menu and
select MANUAL PROGRAM to
manually preset the channel again.
Check the antenna type (VHF/
UHF). Contact a Sony dealer for
advice.
Adjust the antenna direction,
position and angle. Contact a Sony
dealer for advice.
• Do not use a hair dryer or other
equipment near the video TV.
• Adjust the antenna direction,
position and angle for minimum
interference. Contact a Sony
dealer for advice.
Locate external speakers or other
equipment away from the video
TV. Press ?/1 on the video TV to
turn off the video TV for about five
minutes, then turn on again.
Re-set the clock and timer settings.
(page 9)
continued
Additional Information 57