Panasonic TC-14LA1 manual Troubleshooting, Symptom Cause and remedy

Troubleshooting

Before requesting service for this LCD TV, 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.

Symptom		Cause and remedy	Page
Power supply does not	• Is power supply plug unplugged from the outlet?		–
go on	•	If power will not go on with the remote control, is the power supply of the TV "Off"?	13
Remote control cannot	• Is battery exhausted, or is battery polarity wrong?		7
be operated	• Is the remote control receiver illuminated with strong light from a fluorescent lamp etc.?		–
	•	Are you using the special-purpose remote control for this equipment?	–
		(The unit will not operate with another remote control.)
Image shakes, or image	• Is there deterioration, breakage or disconnection of the antenna or antenna wire?		–
is unclear	•	Is the antenna wire connected correctly?	8, 9
There are spots on the	• Is the system affected (by radio wave interference or induced electromagnetic
picture, or the screen		waves) by external sources (automobiles or trains, high-voltage wires, neon,
shakes		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	• Is the antenna direction shifted?		–
doubled or tripled	•	Are reflected electromagnetic waves being received from mountains or buildings?
A color pattern appears,	•	Is the equipment being affected by another TV (electromagnetic interference)?	–
or colors disappear		➠Changing the TV setup location may lead to improvement.
The channel number	•	Has the RECALL button been pressed?
disappears from the		➠Press the "RECALL button" again.	15
screen		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 driving the liquid crystal is lost, and is not		–
the screen turns completely		a malfunction.
white for a moment
The screen goes dark	• The screen is darkened for a moment to conceal noise generated when		–
momentarily when the		changing channels.
channel is changed.
The TV makes a hissing	• If the screen and audio are not abnormal, this sound is caused by		–
noise occasionally		slight expansion and contraction of the cabinet due to changes in room
		temperature. It has no effect on performance.
The screen display	• When input is switched to "video input", this may occur if there is no		10, 11
shakes with video input		signal at the video/audio input terminal.
A black band appears	• This is due to noise generated when changing channels.		–
momentarily when selecting
channels with video
Both edges of the screen,	• They may appear bent due to the received channel or some DVD		–
or columns or window		software. This is not a malfunction.
frames, appear bent
The image from the	•Are plugs securely inserted into each terminal?		10,11
connected equipment		➠Securely insert plugs all the way.
does not appear
The main unit is hot to	• The main unit radiates heat, so some parts of the console reach a high
the touch	•	temperature. This is not a problem for performance or quality.
		Set up at a location with good ventilation.	–
		Do not cover the ventilation holes of the console with a tablecloth, etc.,
		and do not place on top of other equipment (like a video deck).

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