Panasonic TC15LV1 TC15LV1 User Guide - Page 60
Troubleshooting
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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 Power supply does not go on Remote control cannot be operated Image shakes, or image is unclear There are spots on the picture, or the screen shakes The image appears doubled or tripled A color pattern appears, or colors disappear Only a certain channel looks bad The channel number disappears from the screen When the image is not stable, the screen turns completely white for a moment The screen goes dark momentarily when the channel is changed. The TV makes a hissing noise occasionally The screen display shakes with video input There are parts at the top and bottom of the screen where there is no image Top and bottom of picture are missing after zoom Cause and remedy Page • 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 • Is battery exhausted, or is battery polarity wrong? 7 • 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.) - • Is there deterioration, breakage or disconnection of the antenna or antenna wire? - • Is the antenna wire connected correctly? 8, 9 • Is the system affected (by radio wave interference or induced electromagnetic 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. • Is the antenna direction shifted? • Are reflected electromagnetic waves being received from mountains or buildings? - • Is the equipment being affected by another TV (electromagnetic interference)? ➠Changing the TV setup location may lead to improvement. - •Is channel fine tuning correct? - • Has the screen display button been pressed? ➠Press the "Screen display button" again. If the system is switched to external input and there is no external signal 19 video, the number will disappear. • This occurs when the signal for driving the liquid crystal is lost, and is not a malfunction. - • The screen is darkened for a moment to conceal noise generated when changing channels. - • If the screen and audio are not abnormal, this sound is caused by slight expansion and contraction of the cabinet due to changes in room temperature. It has no - effect on performance. • When input is switched to "video input", this may occur if there is no signal at the video/audio input terminal. 10, 18 • With video software wider than 16:9 (cinema vision size software etc.) there are parts at the top and bottom of the screen where there is no image. 21 • Has the screen position adjustment been left shifted? ➠Adjust the screen position. 24 60