Panasonic th-32lhd7bs User Manual
32
Troubleshooting
Before you call for service, determine the symptoms and make a few simple checks as shown below.
Symptoms
Checks
Picture
Sound
Interference
Noisy Sound
Electrical Appliances
Cars / Motorcycles
Fluorescent light
Cars / Motorcycles
Fluorescent light
Normal Picture
No Sound
Volume
(Check whether the mute function has been activated on the remote control.)
(Check whether the mute function has been activated on the remote control.)
No Picture
No Sound
Not plugged into AC outlet
Not switched on
Picture and Brightness/Volume setting
(Check by pressing the power switch or stand-by button on the remote control.)
Not switched on
Picture and Brightness/Volume setting
(Check by pressing the power switch or stand-by button on the remote control.)
No Picture
Normal Sound
If a signal with a non-applicable colour system format, or frequency is input, only
the input terminal indication is displayed.
the input terminal indication is displayed.
No Colour
Normal Sound
Colour controls set at minimum level
(see page 21, 22)
Colour system (see page 29)
(see page 21, 22)
Colour system (see page 29)
There may be red spots,
blue spots and green spots
on the screen.
blue spots and green spots
on the screen.
Normal Sound
This is a characteristic of liquid crystal panels and is not a problem. The liquid crystal
panel is built with very high precision technology giving you fi ne picture details.
Occasionally, a few non-active pixels may appear on the screen as a fi xed point of
blue, green, or red.
Please note this does not affect the performance of your LCD.
panel is built with very high precision technology giving you fi ne picture details.
Occasionally, a few non-active pixels may appear on the screen as a fi xed point of
blue, green, or red.
Please note this does not affect the performance of your LCD.
No remote control operations can be performed.
Check whether the batteries have discharged completely and, if they have not,
whether they were inserted properly.
Check whether the remote control sensor is exposed to an outdoor light or a
strong fl uorescent light.
Check whether the remote control designed specifi cally for use with the unit is
being used. (The unit cannot be operated by any other remote control.)
whether they were inserted properly.
Check whether the remote control sensor is exposed to an outdoor light or a
strong fl uorescent light.
Check whether the remote control designed specifi cally for use with the unit is
being used. (The unit cannot be operated by any other remote control.)
A cracking sound is sometimes heard from the unit.
If there is nothing wrong with the picture or sound, this is the sound of the cabinet
undergoing very slight contractions in response to changes in the room temperature.
There are no adverse effects on the performance or other aspects.
undergoing very slight contractions in response to changes in the room temperature.
There are no adverse effects on the performance or other aspects.
The top or bottom of the picture on the screen is cut
off when I use the zoom function.
off when I use the zoom function.
Adjust the position of the picture on the screen.
Areas at the top and bottom of the screen where
the image is missing appear when I use the zoom
function.
the image is missing appear when I use the zoom
function.
When using a video software program (such as a cinema size program) with a
screen wider than one in the 16:9 mode, blank areas separate from the images
are formed at the top and bottom of the screen.
screen wider than one in the 16:9 mode, blank areas separate from the images
are formed at the top and bottom of the screen.
I can hear sounds coming from inside the unit.
When the power is turned on, a sound of the display panel being driven may be
heard: This is normal and not indicative of malfunctioning.
The main unit is hot.
The main unit radiates heat and some of the parts may become hot. This is not a
problem for performance or quality.
Set up at a location with good ventilation.
Do not cover the ventilation holes of the Display with a tablecloth etc., and do not
place on top of other equipment.
problem for performance or quality.
Set up at a location with good ventilation.
Do not cover the ventilation holes of the Display with a tablecloth etc., and do not
place on top of other equipment.
This LCD Display uses special image processing. Hence a slight time lag may occur between image and audio, depending on the type
of input signal. However, this is not a malfunction.
of input signal. However, this is not a malfunction.
LCD Display panel
Symptoms
Check
It takes a while for the picture
to appear.
to appear.
The unit digitally processes the various signals in order to reproduce estheticically pleasing images.
As such, it sometimes takes a few moments for the picture to appear when the power has been turned
on, when the input has been switched or when the images for the main picture and sub picture on the
two screens are swapped.
As such, it sometimes takes a few moments for the picture to appear when the power has been turned
on, when the input has been switched or when the images for the main picture and sub picture on the
two screens are swapped.
Whirring sounds can be heard
from the display unit.
from the display unit.
The display unit is fi tted with a cooling fan to dissipate heat generated during normal use. The whirring
sound is caused by rotation of the fan and is not a malfunction.
sound is caused by rotation of the fan and is not a malfunction.