Brandt B4302UHD LED Manuel D'utilisation page 46

Troubleshooting Guide
Picture interference like
wavy lines or patterns.
Sound interference may
also be present.
Jumbled teletext
characters
When RGB input is used
there is a distorted picture
or no picture.
Symptoms
Picture blocking or
freezing.
Sound breaking up
Some channels are
missing.
Any or all of the above
faults.
Some other equipment is
using the same frequency.
Poor quality cable in the
path between the TV and
the TV aerial.
Your aerial system is
receiving an unwanted
signal on the same
frequency.
Poor quality signal
Synchronisation signal is
missing.
Digital Terrestrial TV
Possible causes
Weak signal or wrong type
of aerial.
Not receiving one or more
digital multiplex
frequencies.
Interference or other
problem caused by
passing aerial signal
through other equipment.
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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.
As for 'Snowy picture' and
'Ghosts'
Press the AV button to
select the AV input which
receives the
synchronisation signal.
What to do
Try re-tuning.
Aerial may not be suitable
for digital TV broadcasts.
You may be in a place
which does not get a good
digital TV signal.
Get an aerial rigger to
check the aerial system.
Try connecting the aerial
directly to the digital TV
receiver and then
re-tuning.
If some equipment has a
radio frequency modulator,
switch it off or change the
frequency of it and re-tune
the analogue TV. (Please
see other equipment's
instructions for how to do
this.)