NuVision 52LEDLP, Operating Instructions Manual

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Troubleshooting 37
Chapter 5
Troubleshooting
Television Maintenance
The television requires very little maintenance. For best performance, keep the television clean and seek repair when
necessary.
Cleaning the Television
Keep the television clean as follows:
•
Keep the television in an area free from excessive dust and dirt.
•
Wipe the screen and case with a soft, dry cloth. Do not use water, polish, solvent, or other substances. Do not
attempt to clean any of the television’s internal surfaces.
•
Use a vacuum cleaner to remove dust from the air vents on the back and sides of the television. Do this at
least monthly, or more often if there is visible accumulation.
Identifying Problems
If you are encountering problems with your NuVision television, use the following table to help identify the type of
problem that is occurring and the possible solutions to the problem.
NOTE: Unplug the television when cleaning it to avoid risk of electric shock.
Symptom Possible Solution
“Ghost” or double
images • This may be caused by obstruction to the antenna due to high-rise buildings or hills.
Using a highly directional antenna may improve the picture.
No power • Check that the AC power cord is plugged into the socket.
• Unplug the power cord and wait for one minute. Re-insert the plug into the main
socket, wait one minute, and turn on the unit again.
No picture • Check antenna connections at rear of the unit to see if it is properly connected to the
unit.
• There may be broadcast station trouble. Try another channel.
• Adjust the contrast and brightness settings.
• Check the closed caption setup. Some text modes could block the screen.
• There may be a non-compatible input signal. Select a correct input.
Good picture but no
sound • Increase the volume.
• Ensure that the television has not been muted.
Good sound but poor
color • Adjust the contrast, color, and brightness settings.
Poor picture • Poor picture quality may occur when having activated an S-VHS camera or cam-
corder connected and having connected another peripheral at the same time. In this
case, switch off one of the other peripherals.
• Check whether the room is too bright.
Horizontal dotted line • This may be caused by electrical interference, such as a hair dryer or nearby neon
lights. Turn off the electrical equipment.