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Trouble Shooting - NEC PF-51V21 Instructions Manual

Colour television
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9

Trouble Shooting

Before arranging for service, firstly know the status and then check simply as follows:
Problems
No picture or sound.
Picture is OK, no sound.
Remote control doesn't work.
No TV signal.
No external video signal.
Picture lacks colour or picture
too dark.
All
channels
lose
intermittently.
Poor reception, loss of colour
with certain channels.
Diagonal
stripes
appear
picture.
Picture has "snow".
Ghost images appear.
Check if the power supply is plugged in.
Check if the power switch is in "on'" position.
Check if the volume control is set to the minimum or mute position.
Check if the power switch is in "on" position.
Check if the batteries are out of use or not connected well.
Make sure that there is no strong light striking the sensor window of
remote control unit.
Check there are no obstacles between the sensor window and remote
control unit.
Check if the TV/AV button is not set to TV status.
Check if the antenna is well connected.
Check if you installed the TV correctly.
Check if you installed the TV correctly.
Check if the TV/AV button is set to AV position.
Check colour, brightness and contrast controls are correctly adjusted.
colour
Check if the antenna is broken.
Check if the antenna is disconnected.
Check if the antenna is damaged.
Check if channels are correctly tuned (see "Fine tuning").
on
The receiver may be affected by interference (e.g. from nearby radio
broadcasting transmitter or from another TV receiver).
Check if the antenna is broken.
Check if the antenna is disconnected.
Check if the antenna is damaged.
Check if the antenna direction has been changed by a storm or strong
wind, etc. (because ghost images are caused by the arrival at the
antenna of both the signal which has traveled directly from the
transmitter and the signal which has been reflected from a hill or a large
building. The direction of the antenna should be chosen for minimized
ghosting.)
Check
13

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