Troubleshooting - Panasonic TH-47LFV5W Operating Instructions Manual

Troubleshooting

Before you call for service, determine the symptoms and make a few simple checks as shown below.
Symptom
No picture is displayed
Interference displayed on this Display
or audible noise is heard
Color is abnormal
Picture is distorted with abnormal
patterns
After changing input source or signal,
Picture is not displayed correctly.
Display image doesn't fill up the full
size of the screen
Can hear sound, but no picture
Can see picture but no sound is heard 1. Improperly connected source signal
Some picture elements do not light up Some pixels of this Display may not turn
After-Images can still be seen on this
Display after this Display is powered
off. (Examples of still pictures include
logos, video games, computer images,
and images displayed in 4:3 normal
mode)
32
Possible Cause
1. The power cord is disconnected.
2. The main power switch on the back
of this Display is not switched on.
3. The selected input has no connection.
4. The display is in standby mode.
Caused by surrounding electrical
appliances or fluorescent lights.
The signal cable is not connected
properly.
1. The signal cable is not connected
properly.
2. The input signal is beyond the
capabilities of this Display.
Picture signal might be not received
correctly.
The zoom mode is not correctly set.
Improperly connected source signal
cable.
cable.
2. Volume is turned all the way down.
3. [MUTE] is turned on.
4. No external speaker connected.
on.
A still picture is displayed for an over
extended period of time.
Remedy
1. Plug in the power cord.
2. Make sure the power switch is
switched on.
3. Connect a signal connection to this
Display.
Move this Display to another location to
see is the interference is reduced.
Make sure that the signal cable is
attached firmly to the back of this Display.
1. Make sure that the signal cable is
attached firmly.
2. Check the video signal source
to see if it is beyond the range
of this Display. Please verify its
specifications with this Display's
specification section.
At once, select other input source, then
back to intended input source.
Use the Zoom mode or Custom zoom
function in the Screen menu to fine tune
display geometry and time frequency
parameter.
Make sure that both video inputs and
sound inputs are correctly connected.
1. Make sure that both video inputs and
sound inputs are correctly connected.
2. Press [ ] or [ ] button to hear
sound.
3. Switch MUTE off by using the [MUTE]
button.
4. Connect external speakers and adjust
the volume to a suitable level.
This display is manufactured using
an extremely high level of precision
technology: however, sometimes some
pixels of this Display may not display.
This is not a malfunction.
Do not allow a still image to be displayed
for an extended period of time as this
can cause a permanent after-image to
remain on this Display.