Reception Of Interference - Toshiba VTD1431 Service Manual

RECEPTION OF INTERFERENCE

The most common types of television interference are as follows.
IGNITION
Black spots and horizontal streaks may appear, the picture may flutter or drift. This is usually
caused by interference from car ignition system, neon lamps, electric drills or other electrical
appliances.
IGNITION
GHOSTING
Ghosting is caused by the TV signal following two paths. One is the direct path and the other
is reflected from tall buildings, hills or similar obstruction. Changing the direction and/or position
of the aerial may improve reception.
GHOSTING
SNOW
If your TV is located on the fringe area of a TV station, where the signal is weak, your picture
may be affected by the appearance of small dots (SNOW). It may be necessary to install a
stronger aerial to improve the picture.
SNOW
RADIO FREQUENCY INTERFERENCE
This kind of interference produces moving ripples or diagonal streaks and in some cases loss
of contrast in the picture.
RADIO FREQUENCY
INTERFERENCE
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