Ignition Noise - Hitachi 62VS69 Operating Manual

IGNITION NOISE:
Black s pots o rhorizontal streaks may appear, picture m ay flutter o rdrift.
Usually caused b yinterference from automobile ignition systems, neon lamps,
electrical drills, and other electrical appliances.
GHOSTS:
Ghosts are caused b ythetelevision signal following twopaths. One isthe
direct path and theother i sreflected from tallbuildings, hills orsome o ther
objects. Changing the direction orposition ofthe antenna may improve
reception. Ghosting may also becaused bydefects intheantenna system s uch
asunshielded leads o rconnecting several sets tothesame a ntenna without
using m ultiple antenna couplers.
SNOW:
Ifyour r eceiver islocated i nthe fringe a rea ofatelevision station w here t he
signal isweak, your p icture m ay bemarred bythe appearance ofsmall dots.
When t hesignal isextremely weak, itmay benecessary toinstall aspecial
antenna toimprove thepicture.
RADIO FREQUENCY INTERFERENCE:
The interference produces moving ripples or diagonal streaks, and in some
cases, causes loss of contrast in the picture.
BLOCK NOISE (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 weak signals.
BLACK SCREEN:
When using an antenna, weak signals will display a black screen. It may be
necessary to upgrade your antenna.
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