NEC 4T-B80CT1U 4T-B Series Operation Manual - Page 90

Troubleshooting

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>> Appendix

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Appendix
Troubleshooting
Problem
Possible Solution
No power
Check if you pressed
POWER
on the remote control unit.
Is the AC cord disconnected?
Has the power been turned on?
Unit cannot be
operated.
External influences such as lightning, static electricity, may cause improper
operation. In this case, operate the unit after first turning off the power of the
TV or unplugging the AC cord and replugging it in after 1 or 2 minutes.
Remote
control unit
does not
operate.
Are batteries inserted with polarity (+, -) aligned?
Are batteries worn out? (Replace with new batteries.)
Are you using it under strong or fluorescent lighting?
Is a fluorescent light illuminated near the remote control sensor?
Picture is cut
off/with
sidebar
screen.
Is the image position correct?
Page 7-1
Are screen mode adjustments such as picture size made correctly?
Pages
4-23 to 4-25
Strange color,
light color, or
color
misalignment
Adjust the picture tone.
Pages 4-16 to 4-18
Is the room too bright? The picture may look dark in a room that is too bright.
Power is
suddenly
turned off.
Is the sleep timer set?
Pages 3-6
Check the power control settings.
Page 4-22
The unit's internal temperature has increased. Remove any objects blocking
vent or clean.
Problem
Possible Solution
No picture
Is connection to other components correct?
Is the correct input selected?
Pages 2-1
If the PC image is not displayed, check the following:
- When connecting a laptop PC to the TV, check that display output
mode of the PC is set to external TV.
- Check the resolution setting on the PC. Is a non-compatible
signal being input?
Page 7-7
Picture quality of HD
videos is poor.
To enjoy HD images from external equipment, you are required to
set up HDMI connection or component connection.
If the Video source is not of HD quality, HD images cannot be
displayed. Check that the Video source you are viewing provides
HD images.
The HD cable/satellite set-top box may need to be configured to
output HD images via cable/satellite.
The TV sometimes
makes a cracking
sound.
This is not a malfunction. This happens when the cabinet slightly
expands and contracts according to change in temperature. This
does not affect the Monitor's performance.
Some Internet functions
used on a PC are not
available from the TV.
The TV has only limited functions compared with regular PC
browsers.
Pages 8-4 to 8-6
ENG 10-2