Reception Disturbances - Hitachi LE39E407 Owner's Manual

Reception disturbances

NOTE:
• The TV set can generate sound distortion in external devices such as a radio. Please separate radio equipment from the TV set to a
considerable distance.
EN 27
IGNITION NOISE:
Black spots or horizontal streaks may appear, picture may flutter or drift. Usually caused by interference
from automobile ignition systems, neon lamps, electrical drills, and other electrical appliances.
GHOSTS:
Ghosts are caused by the television signal following two paths. One is the direct path and the other
is reflected from tall buildings, hills or some other objects. Changing the direction or position of the
antenna may improve reception. Ghosting may also be caused by defects in the antenna system such
as unshielded leads or connecting several sets to the same antenna without using multiple antenna
couplers.
SNOW:
If your receiver is located in the fringe area of a television station where the signal is weak, your
picture may be marred by the appearance of small dots. When the signal is extremely weak, it may be
necessary to install a special antenna to improve the picture.
RADIO FREQUENCY INTERFERENCE:
The interference produces moving ripples or diagonal streaks, and in some cases, causes loss of
contrast in the picture.
PREVENTION OF AN OBSTACLE TO RADIO RECEIVERS
This television has been designed pursuant to the FCC class B Rules. This is to prevent a problem to
Radio receivers. If this television causes a problem to Radio receivers, then take the following steps:
• Keep the television away from Radio.
• Adjust Radio antennas in order for the television not to receive interference.
• The antenna cable of Radio should be kept away from the television.
• Use a coaxial cable for antenna.
You can check if this television influences Radio receivers by turning off all other equipment other than
the television. If you find a problem receiving Radio when using the television, check the instructions
mentioned above.
BLOCK NOISE or FREEZE (DIGITAL INPUT):
Fuzzy blocks may appear in some area or the whole area of the screen. This is usually caused by
interference from automobile ignition systems, neon lamps, electrical drills, ghosting of the image and
lost or weak receiving signals.