JVC AV-20420, AV-20421, AV 20420 manual Troubleshooting, Problems Check

Troubleshooting

PROBLEMS	CHECK
There is no power	• See if the power cord became unplugged.
	• Check for a blown fuse or circuit breaker or a power outage.
There is no picture	• The antenna could be disconnected.
or sound	• The input mode could be set improperly. See page 35.
	• The tuner (Auto Tuner Setup) could be set improperly. See page 17.
	• The TV station may be having difficulties. Check to see if other stations are working.
Remote control is not	• Check to see that the batteries are still working and properly installed.
operating properly or	• Make sure the remote has a clear sight path to the TV.
at all
You cannot select a	• You may be too far from the TV. You must be within 23 feet (7 meters).
certain channel	• Make sure the channels have been programmed. See "Channel Summary", page 18.
	• Check to see if the channel is locked. See "Channel Summary - Lock" page 18.
The power turns off	• Make sure the set did not become unplugged.
by itself	• Perhaps the On/Off Timer is set. See page 32.
	• Check to see if the Sleep Timer was set. See page 36.
The clock is wrong	• The power was interrupted and the clock was not reset. See page 31.
The On Timer is	• There is a problem with the TV. Unplug the set and call for service.
blinking
The color quality	• Tint and Color may be improperly adjusted. See page 27.
is poor	• The Video Status mode may be turned to the wrong setting. See page 28.
There are lines	• There could be interference from another electrical appliance, such as a computer,
across the picture	another TV or VCR. Move any such appliances further away from the TV.
The picture is spotted	• There could be interference from a high-wattage appliance, like a hairdryer or vacuum,
	operating nearby. Move the antenna away from the appliance or change to a coaxial
	cable connection which is less prone to interference.
There are double	• A building or passing airplane can reflect the original signal and produce a second,
pictures (ghosts)	slightly delayed one. Adjust your antenna position.
Picture is snowy	• Your antenna may be damaged, disconnected or turned. Check the antenna
(image noise)	connection. If the antenna is damaged, replace it.
Screen is 80% black	• The Closed Caption Text mode is on. Turn it off in the Closed Caption Menu, page 33.
Stereo or bilingual	• Make sure the MTS settings are correct. See "MTS" on page 29.
programs can't be
heard
There is no sound	• The TV Speaker option may be turned off. See page 30.
from the TV's speakers
Static electricity	• It is normal to feel static electricity if you brush or touch the screen.
You hear occasional	• It is normal for the TV to make crackling sounds when first turned on or off. Unless
crackling sounds	the sound or picture become abnormal, this is fine.

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