Panasonic TC-20LA1H - Manual (Page 27)

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Troubleshooting
If there is a problem with your LCD TV please refer to the table below to determine the symptoms, then carry out
the suggested check. If this does not solve the problem, please contact your local Panasonic dealer, quoting the
model number and serial number (both found on the rear of the TV).
Symptoms
Checks
There may be red
spots, blue spots and
green spots on the
screen
Aerial location, direction or connection
Aerial location, direction or connection
Electrical appliances
Cars/Motorcycles
Fluorescent lights
Volume level
Sound mute switched on
TV set to AV mode
Not plugged into A.C. outlet
Not switched on
Picture / Sound controls set at minimum levels
Check if in stand-by mode
Retune Channel (s)
Sound reception may have deteriorated.
Sound System
Picture Sound
Neutral
detergent To clean this unit, wipe with a soft, dry cloth.
If the surfaces are extremely dirty, use a soft cloth dipped in soap-and-water solution
or a weak detergent solution.
• Use eyeglass cleaner to remove stubborn dirt from the LCD.
• Never use alcohol, paint thinner or benzine to clean this unit.
• Before using chemically treated cloth, read the instructions that came with the cloth carefully.
• Do not wipe the LCD with water.
Wipe the cabinet with a soft cloth
If the cabinet is heavily soiled, wipe with a well-wrung soft cloth dipped in kitchen cleanser (neutral) diluted with water.
CAUTION:
If water or similar substances get inside the monitor via the liquid crystal panel surface, a malfunction may result.
Maintenance
Colour Controls set at minimum levels
Colour System
This is a characteristic of liquid crystal panels. This is not a
malfunction and can not be a reason for service claim.
The liquid crystal panel is built with very high precision
technology giving you fine picture details. Occasionally, a
few non-active pixels may appear on the screen as a fixed
point of blue, green, or red.
Please note this does not affect the performance of your LCD.
Snowy Picture
Multiple Image
Interference
Normal Picture
No Picture
No Colour
Poor or Distorted
Picture
Normal Picture
Noisy Sound
Normal Sound
Normal Sound
Normal Sound
Noisy Sound
No Sound
No Sound
Weak or
No Sound
Weak or
distorted sound
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