Panasonic TC 15LV1 manual Troubleshooting, For TV broadcasts VHF, UHF, Symptoms Cause and remedy

Troubleshooting

Before requesting service for this LCD/DVD combo, check the chart below for a possible cause of the problem you are experiencing. Some simple checks or a minor adjustment on your part may eliminate the problem and restore proper operation.

If you are in doubt about some of the check points, or if the remedies indicated in the chart do not solve the problem, consult your dealer for instructions.

For TV broadcasts (VHF, UHF)

	Symptoms			Cause and remedy	Page
Power supply does not go on				• Is power supply plug unplugged from the outlet?	–
				• If power will not go on with the remote control, is the power supply of the TV "Off"?	13
Remote control cannot be				• Is battery exhausted, or is battery polarity wrong?	7
operated				• Is the remote control receiver illuminated with strong light from a fluorescent	–
				lamp etc.?
				• Are you using the special-purpose remote control that come with this equipment?	–
				(The unit will not operate with another remote control.)
Image shakes, or image is				• Is there deterioration, breakage or disconnection of the antenna or antenna wire?	–
unclear				• Is the antenna wire connected correctly?	8, 9
There are spots on the picture,				• Is the system affected (by radio wave interference or induced electromagnetic
or the screen shakes				waves) by external sources (automobiles or trains, high-voltage wires, neon,	–
				motors, magnetized steel frame, or iron rain shutters, etc.)?
				➠Turn off the power supply, and try changing the equipment setup location. If
				that has no effect, separate magnet-proofing will be required.
The image appears doubled				• Is the antenna direction shifted?	–
or tripled				• Are reflected electromagnetic waves being received from mountains or buildings?
A color pattern appears, or				• Is the equipment being affected by another TV (electromagnetic interference)?	–
colors disappear				➠Changing the TV setup location may lead to improvement.
Only a certain channel looks bad				•Is channel fine tuning correct?	–
T h e	c h a n n e l n u m b e r			• Has the screen display button been pressed?
disappears from the screen				➠Press the "Screen display button" again.	19
				If the system is switched to external input and there is no external signal
				video, the number will disappear.
When the image is not stable,				• This occurs when the signal for driving the liquid crystal is lost, and is not a
the screen turns completely				malfunction.	–
white for a moment
The	screen	goes	dark	• The screen is darkened for a moment to conceal noise generated when changing
momentarily		when	the	channels.	–
channel is changed.
The TV makes a hissing				• If the screen and audio are not abnormal, this sound is caused by slight expansion	–
noise occasionally				and contraction of the cabinet due to changes in room temperature. It has no
				effect on performance.
The screen display shakes				• When input is switched to "video input", this may occur if there is no signal at the	10, 18
with video input				video/audio input terminal.
There are parts at the top				• With video software wider than 16:9 (cinema vision size software etc.) there are
and bottom of the screen				parts at the top and bottom of the screen where there is no image.	21
where there is no image
Top and bottom of picture				• Has the screen position adjustment been left shifted?	24
are missing after zoom				➠Adjust the screen position.

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