Troubleshooting - Hitachi 27Cx0B Operating Manual

TROUBLESHOOTING
RECEPTION PROBLEMS (EXTERNAL TO THE TV)
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• IGNITION NOISE:
Black spots or horizontal streaks may appear, p_cture may flutter or dr=ft. 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.Chang-
ing the direction or position of the antenna may improve reception. Ghosting may
also be caused bydefects in the antenna system such as unshielded leads or con-
necting 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.
CHECK HERE BEFORE CALLING FOR SERVICE
SYMPTOMS
No p_cture, no sound • • • • • • •
Sound OK, ptcture poor • • • • • • • •
Ptcture OK, sound poor • • • • • • •
Ptcture blurred • • • • • •
Lmes or slreaks in ptcture • • •
Poor reception on some channels • • • • •
Ptcture rolls verhcally • •
No color • • • • • •
Poor color
• • • • • • •
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