The function to prevent “Image retention” is activated. (Not a faulty symptom)
A pixel or luminescent spot can occasionally be missing in plasma displays.
Check nearby electrical products (car, motorcycle, fluorescent lamp).
Check Picture menu (p. 24)
Check the cable connections.
Check that the correct input has been selected.
Check the channel settings. (p. 34)
Check the antenna cables.
Is the AC power cord plugged into the outlet?
Is the TV unit turned On?
Check Picture menu (p. 24) and volume.
Check the AV cable connections.
Check that the correct input has been selected.
Change settings of Closed Caption (CC). (p. 36)
Are the speakers’ cables connected correctly? (p. 40)
Is “Sound Mute” active? (p. 13)
Is the volume set to the minimum?
Is “Speaker output” set to “Off”? (p. 24)
Change “SAP” settings. (p. 16)
Check “HDMI 1 in”, “HDMI 2 in” or “HDMI 3 in” settings. (p. 24)
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.
The sound is from 
Even when the temperature of parts of the front, top and
TH-50PZ85U, TH-46PZ85U, TH-42PZ85U specifications
The Panasonic TH-46PZ85U, TH-42PZ85U, and TH-50PZ85U are part of Panasonic's acclaimed Viera plasma HDTV lineup, known for vibrant picture quality and advanced display technologies. Each model boasts a striking aesthetic with sleek designs that seamlessly integrate into modern home environments.One of the key features across these models is the 1080p Full HD resolution. This brings lifelike clarity and detail to any viewing experience, making them perfect for watching high-definition movies or playing video games. With a resolution of 1920 x 1080, these televisions deliver crisp images, allowing viewers to appreciate the finer details in scenes.
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In summary, the Panasonic TH-46PZ85U, TH-42PZ85U, and TH-50PZ85U plasma televisions stand out due to their superior image quality, advanced technologies, and user-friendly features. Each television is a testament to Panasonic's commitment to delivering an immersive home entertainment experience, catering to the demands of modern consumers. Whether used for gaming, movies, or streaming shows, these models continue to impress with their performance and reliability.