If there is a problem with your 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).
Screen
Sound
TV set
Problem
“Press any button to return” moves on the screen
Some spots remain bright or dark
Chaotic image, noisy
No image can be displayed
Only spots are displayed instead of images
Neither image nor sound is produced
Black Box appears
No sound is produced
Sound is unusual
Unknown sound heard 1- Sounds from TV
cabinet
2- Whirring sound
3- Tick/Click sound
4- Buzzing sound
Parts of the TV set become hot.
Actions
The function to prevent “Image retention” is activated. (Not a faulty symptom)
•The screen saver is activated if the TV unit is not operated for a certain time in SD mode.
•“Image retention” (p. 5)
The Plasma panel is made up of a few million pixels and is produced with advanced technology through an intricate process. Sometimes a few pixels may be bright or dark. These pixels do not indicate a defective panel and will have no impact on the performance of the TV.
Check nearby electrical products
(car or motorcycle ignition systems, fluorescent lamp, etc.)
Check Picture menu
Check the cable connections.
Check that the correct input has been selected.
Check the channel settings.
Check the antenna cables.
Is the AC power cord plugged into the outlet?
Is the TV unit turned On?
Check Picture menu and volume.
Check the AV cable connections.
Check that the correct input has been selected.
Change settings of Closed Caption (CC).
Are the speakers’ cables connected correctly?
Is “Sound Mute” active?
Is the volume set to the minimum?
Is “TV speakers” set to “Off”?
Change “SAP” settings.
Check “HDMI 1 in”, “HDMI 2 in” or “HDMI 3 in” settings.
Set “SAP” setting to “Stereo” or “Mono”.
Check the HDMI device connected to the unit.
Set the audio setting of the HDMI device to “Linear PCM”. 
If digital sound connection has a problem,
select analog sound connection.
1- Changes in the temperature and humidity of the room may cause the TV’s cabinet to expand or contract and produce metallic sounds. This is not a sign of faulty operation or a malfunction.
2- The TV may have a cooling fan that makes a soft whir. This is not a sign of faulty operation or a malfunction.
3- When the TV is powered on, an electrical component in the TV activates producing a tick/click sound. This is not a sign of faulty operation or a malfunction.
4- Electrical circuits are active while the TV set is on. This is not a sign of faulty operation or a malfunction.
Even when the temperature of parts of the front, top and rear panels has risen, these temperature rises will not pose any problems in terms of performance or quality.
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