Troubleshooting - Panasonic PT-50LCZ70 Operating Instruction

Troubleshooting

Before you call for service, determine the symptoms and make a few simple checks as shown below.
Power does not turn ON.
Remote Control/ Unit buttons do not function.
Power does not turn ON or OFF.
Image is distorted. Image freezes.
The power Power turns off while another
turns OFF. indicator is flashing.
Remote Control does not function.
Image shakes.
Image is not clear.
(blurring / vertical lines)
Color patches or no color.
Image appears doubled or tripled.
Images disappear at the top and bottom of the
screen.
During ZOOM modes, the image is cut off at
the top and bottom.
Some parts of the screen are always lit while
others do not light up.
Some parts of the screen do not light up.
Fan is operating even though TV Power is
OFF.
Leaving stationary images, such as still video
images, web pages, or filler bars (used for
NORMAL aspect mode), on-screen for an
extended period of time can leave ghost
images on the screen.
Pictures from equipment are unusual when the
equipment is connected via HDMI.
No sound is produced.
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Problem
• Is the power cord plugged in?
• Press unit POWER button down over 7 seconds. The POWER indicator goes
out. If the Power was On, the screen will also disappear. After 5 seconds, turn
Power On and operate unit normally. If the steps above do not restore normal
operation, disconnect then reconnect the AC plug and turn the power On.
• Please consult your nearest dealer.
• Are the batteries dead or inserted incorrectly?
• Is the Remote Control sensor in direct fluorescent lamp light or other strong
sources of light?
• Is the antenna or antenna cable old, broken, or shorted out?
• Is the antenna cable connected properly?
• A sudden temperature change may have caused condensation in the internal
optics which results in blurring or vertical lines. Please wait until room
temperature is normal and constant before turning power ON. These symptoms
will clear up as time passes.
• Depending on the connected device, a 1080i input signal may cause the picture
to flicker. If the connected device has a format selection switch, set the format
to 720p.
• When using a VCR and selecting channels on the TV, is the TV/VIDEO mode
for the VCR set to TV?
• Is the antenna facing the right direction?
• Is the antenna receiving any signals reflected off of mountains or buildings?
• When using 16:9 image software (cinema vision size software, etc.), there is no
picture at the top and bottom of the screen.
• Please adjust the V-Size. This is not a mulfunction.
• This is a characteristic of the LCD panel and not a malfunction.
• This is because the cooling fan is operating. The fan will stop after about
3 minutes.
• This is a characteristic of the LCD panel and not a malfunction. Try displaying
constantly moving pictures which fill the entire screen, or turn the power OFF
for a while to return the screen to normal.
• Is the HDMI cable connected properly?
• Turn Off the TV unit and device, then turn them On again.
• Check the input signal from the equipment.
• Is "Sound Mute" active?
• Is the volume set to the minimum?
• Is "Speaker output" set to "Off"?
• Change "SAP" settings.
• Check "HDMI 1 in", "HDMI 2 in" or "HDMI 3 in" insettings when the equipment is
connected via HDMI.
• If digital sound connection has problem, select analog sound connection.
Possible solution Page
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