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Appendix
Identifying Problems
If the TV seems to have a problem, first try this list of possible problems and solutions.
If none of these troubleshooting tips apply, call your nearest Samsung service center.
Problem
Poor picture
Poor sound quality.
No picture or sound.
No sound or sound is too low at
maximum volume.
Picture rolls vertically.
The TV operates erratically.
The TV won't turn on.
Remote control malfunctions
"Check signal cable" message.
"Not Supported Mode" message.
The image is too light or too dark.
Horizontal bars appear to flicker,
jitter or shimmer on the image.
Vertical bars appear to flicker,
jitter or shimmer on the image.
Screen is black and power
indicator light blinks steadily.
Image is not stable and may appear
to vibrate when you have a
computer connected to the PC input.
Image is not centered on the screen.
If a still image is displayed for
an extended period of time, residual
images or blurring may appear.
Color image is not correct.
The TFT LCD panel uses a panel consisting of sub pixels (LN26T71B: 3,147,264, LN32T71B: 3,147,264, LN40T71B: 3,147,264) which require
sophisticated technology to produce. However, there may be few bright or dark pixels on the screen. These pixels will have no impact on the
performance of the product.
All manuals and user guides at all-guides.com
Possible Solution
Try another channel.
Adjust the antenna.
Check all wire connections.
Try another channel.
Adjust the antenna.
Try another channel.
Press the SOURCE button.
Make sure the TV is plugged in.
Check the antenna connections.
First, check the volume of units connected to your TV (digital broadcasting receiver, DVD, cable
broadcasting receiver, VCR, etc.). Then, adjust the TV volume accordingly.
Check all wire connections.
Unplug the TV for 30 seconds, then try operating it again.
Make sure the wall outlet is working.
Replace the remote control batteries.
Clean the upper edge of the remote control (transmission window).
Check the battery terminals.
Ensure that the signal cable is firmly connected to the PC source.
Check the maximum resolution and the frequency of the Video Adapter.
Compare these values with the data in the Display Modes.
Adjust the Brightness and Contrast.
Adjust the Fine tuning.
Adjust the Coarse tuning and then adjust the Fine tuning.
Adjust the Coarse tuning and then adjust the Fine tuning.
On your computer check: Power, Signal Cable.
The TV is using its power management system.
Move the computer's mouse or press any key on the keyboard.
If the setting is not correct, use your computer utility program to change the display settings.
Your TV supports multiscan display functions within the following frequency domain:
Horizontal frequency (kHz)
Vertical frequency (Hz)
PC Maximum refresh rate
(at 60 Hz)
Adjust the horizontal and vertical position.
The screen position must be adjusted on the output source (i.e. STB) with a digital signal.
When you need to leave the monitor unused for an extended period of time, adjust the settings so
that the monitor automatically goes into energy saving mode or activates the screen saver to display
moving images.
Check if signal cables are connected correctly.
Check if color system mode is set correctly.
English-38
30~60
60~75
1360 x 768
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