Troubleshooting - Panasonic TH-42LF8U Operating Instructions Manual

Troubleshooting

Before you call for service, determine the symptoms and make a few simple checks as shown below.
Symptoms
Picture
Interference
Normal
Picture
No Picture
No Picture
No Colour
Power automatically turns off unexpectedly.
Power indicator is blinking in red.
No remote control operations can be performed.
[Controller ID function] function cannot be used.
(When using ID remote controller)
Sound
Electrical Appliances
Cars / Motorcycles
Noisy Sound
Fluorescent light
Volume
No Sound
(Check whether the mute function has been activated on the
remote control.)
Not plugged into AC outlet
Not switched on
No Sound
Picture and Brightness/Volume setting
(Check by pressing the <Main Power On / Off button> or
stand-by button on the remote control.)
If a signal with a non-applicable colour system format,
or frequency is input, only the input terminal indication is
Normal Sound
displayed.
Normal Sound Colour controls set at minimum level (see page 38, 40)
Check the settings of [No signal power off], [HDMI1 power
management], [HDMI2 power management], [DIGITAL LINK
power management]*, [DVI-D power management], [PC
power management] and [No activity power off]. Any of them
may be set to [On (Enable)]. (see page 50)
: LF80 series only
*
There is possibility of malfunction. Please contact an
Authorized Service Centre.
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 fluorescent light.
Check whether any obstacle is present between the remote
control sensor and the remote control.
If the installation condition is normal, pull out the remote
control sensor from the edge side of the main unit when
using.
Check whether the remote control designed specifically
for use with the unit is being used. (The unit cannot be
operated by any other remote control.)
Check whether the option other than [Off] is selected in
[Controller user level] in the [Options] menu. (see page 67)
Check whether [Controller ID function] in [Options] menu is
set to [On]. (see page 68)
Check whether <ID MODE> switch is set to <ON>. (When
using ID remote controller) (see page 94)
Check whether [Controller ID function] is set to [On], or <ID
MODE> switch is set to <ON>. (see page 68)
(When [Controller ID function] is set to [On], you need to set
<ID MODE> switch to <ON> and set the ID number.)
Check
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