Troubleshooting chart, Symptoms, Picture – Panasonic CT-31SF14 User Manual
Page 34: Sound, Check
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Troubleshooting Chart
Before you call for service, determine the symptoms and make a few simple checks shown below.
Symptoms
Picture
Sound
Check
il
SNOWY PICTURE
V
NOISY SOUND
- ANTENNA LOCATION AND/OR CONNECTION
MULTIPLE IMAGE NORMALSOUND
ANTENNA DIRECTION AND/OR LOCATION
ANTENNA LEAD*IN WIRE
INTERFERENCE
NOISY SOUND
ELECTRICAL APPLIANCES, LIGHTS, CARS AND TRUCKS
DIATHERMY AND OTHER MEDICAL EQUIPMENT
NORMAL PICTURE
NO SOUND
VOLUME CONTROL SETTING
MUTE CONTROL (IF APPLICABLE)
TV SPEAKER SWITCH (IF APPLICABLE) IN OFF OR EXT POSITION
TRY ANOTHER CHANNEL
NO VIDEO
N
NOISY SOUND
TV/ANT-CABLE TUNING SYSTEM SET TO PROPER SETTING
ANTENNA INPUT MODE INCORRECT
NO PICTURE
NO SOUND
CHECKTHATAC POWER LINE IS PLUGGED INTO AC OUTLET AND
POWER BUTTON IS ON
BRIGHTNESS AND AUDIO CONTROLS SET PROPERLY
TRY ANOTHER CHANNEL
NO COLOR
NORMALSOUND
COLOR CONTROL SETTINGS
TRY ANOTHER CHANNEL
- RECEIVER IN VIDEO MODE WITH NO SIGNAL
BLACK PICTURE
NO SOUND
I - P G E
NO VIDEO
é
X
NOISY SOUND
- CHANNEL LOCKOUT FEATURE ACTIVATED
n
BLACK BOX IN
PICTURE
\
SOUND
CC (CLOSED CAPTION) IN TEXT MODE
PUT IN CAPTION OFF MODE TO ELIMINATE BLACK BOX