JVC LT-24HD7WU Instrucciones De Funcionamiento página 33

Troubleshooting table
Picture looks squashed or
Equipment feeding the
stretched even though the
display is set to the wrong
aspect ratio controls are
aspect ratio.
set correctly (for example
4:3 or 16:9).
Some other equipment is
Picture interference like
using the same frequency.
wavy lines or patterns.
Poor quality cable in the path
Sound or colour
between the TV and the TV
interference may also be
aerial.Your aerial system is
present.
receiving an unwanted signal
on the same frequency.
No picture. Brightness and contrast
levels are set to minimum.
Jumbled teletext
Poor quality signal
characters
When RGB input is
Synchronisation signal is
used there is a
missing.
distorted picture or no
picture.
Analogue TV & general
Symptoms Possible causes
Mains supply missing. Main
Television seems 'dead' -
power switch is off.
no lights come on and
nothing works.
The stand-by light is on
Blown fuse or circuit breaker.
but the buttons don't seem
Try the front panel
to work.
STANDBY/ON button: if TV
comes on then check "The
remote does not function".
Micro-controller confused by
Local function buttons do
electrical disturbance.
not work. Stuck on stand-
by.
Analogue TV & general
Wrong functions or short
range.
Sound
Remote
Batteries run down.
Obstacle in the way.
On the equipment feeding the TV choose the correct
output aspect ratio such as 4:3 or 16:9 to match the
TV. On digital equipment you might choose 1280 x
960 pixels to match 4:3 screens or
1280 x 768 pixels to match 16:9 screens.
Put other equipment on stand-by to see if the
interference stops: change the output frequency of
the equipment that is causing interference(see its
instructions). Get higher quality cable.
Get your aerial system checked.
Increase the brightness and contrast settings.
As for 'Snowy picture' and 'Ghosts'
Press the AV button to select the AV input which
receives the synchronisation signal.
What to do
Make sure it is not a general power cut.
Check the power switches on the television and at the
power outlet. Check the fuse or circuit breaker at your main
fuse box. Look for a possible cause of failure before you
replace or re-set it. Disconnect power supply, wait five
minutes and try front panel STANDBY/ON. If still no good,
disconnect power supply and assume the unit is faulty.
Switch off mains power and wait 10 minutes before trying
again. (Leave the TV unplugged and call a service
engineer if this does not work.)
Insert new batteries
Remove any objects and aim from straight in front of the
remote sensor with a clear line of sight.
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