When You Have Trouble; Troubleshooting - JVC LT-42GZ78 Instructions Manual

When you have trouble

Troubleshooting

Severe noise or
snow
Is the TV connected correctly to
the aerial?
Change the direction of the aerial.
Is the aerial or its cable
damaged?
Consult your retailer
Patterns, stripes
or noise
Is the aerial receiving interference
from high-voltage power lines or
wireless transmitters?
Consult your retailer
Are connected devices too close
to the TV?
Insert the minimum distance
between the aerial and the
cause of interference until no
interference
Ghosting
(Doubling of images)
Are you receiving interference
from signals refl ected off
mountains or buildings?
Adjust the direction of your
aerial, or change to a
good-quality directional aerial
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I can't turn it on!
Is the power cord connected to the AC outlet
correctly?
The remote
control doesn't
work!
Are the batteries fl at?
Are you more than 7 meters away
from the TV?
Is the "MODE (TV, VCR/DVR, DVD, AUDIO)" set to "TV"?
When viewing teletext, the TV menu bar does not appear.
Depending on the stability of the signal, there may be a time
lag when changing channels.
Problem
Remote control
Unplug TV, several minutes later plug it in again.
stops working
Front control buttons
Switch "Child Lock" to "Off".
does not work
Aspect ratio changes
Press " " to return to your settings.
unintentionally
PC screen alignment
Adjust the "PC position".
is off
Enters "Clear Motion
Drive u" demonstration
Set "Auto Demonstration" to "Off".
when watching TV.
Unnatural colour >>> Adjust "Colour" and "Back Light".
Noise >>> Set to the following functions.
Poor picture quality
Picture Mode :
Super DigiPure : Max
Dull picture >>> Set to the following functions.
Picture Mode :
Super DigiPure : Min
If the top of the image is distorted, check the video signal
quality itself.
Strange picture
If movement appears unnatural when receiving a signal from
when using an external
a DVD player, etc. with 625p (progressive-scanning), change
device
the output setting of the external device to 625i (interlace-
scanning).
Blue screen appears
Switch "Blue Back" to "Off".
on the screen
Actions page
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21
34
34
36
Check your "Colour System". If "Auto"
is selected, select the specifi c colour
system manually.
Standard 34
36
Bright 34
36
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