Troubleshooting

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

 

 

 

Possible Solution

Poor picture

 

 

 

Try another channel. / Adjust the antenna. / Check all wire connections.

Poor sound quality.

 

 

 

Try another channel. / Adjust the antenna.

No picture or sound.

 

 

 

Try another channel. / Press the SOURCE button. /

 

 

 

 

Make sure the TV is plugged in. / Check the antenna connections.

No sound or sound is too low at maximum volume.

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.

Picture rolls vertically.

 

 

 

Check all wire connections.

The TV operates erratically.

 

 

 

Unplug the TV for 30 seconds, then try operating it again.

The TV won’t turn on.

 

 

 

Make sure the wall outlet is working.

Remote control malfunctions

 

 

 

Replace the remote control batteries.

 

 

 

 

Clean the upper edge of the remote control (transmission window).

 

 

 

 

Check the battery terminals.

“Check signal cable” message.

 

 

 

Ensure that the signal cable is

“Not Supported Mode” message.

 

 

 

Check the maximum resolution and connected device’s Video frequency.

 

 

 

 

Compare these values with the data in the Display Modes.

Digital broadcasting screen problem.

 

 

 

Please check the digital signal strength and input antenna.

The image is too light or too dark.

 

 

 

Adjust the Brightness and Contrast. / Adjust the Fine tuning.

Black bars on the screen.

 

 

 

Make sure the broadcast you’re receiving is High De

 

 

 

 

HD channels sometimes broadcast Standard De

 

 

 

 

can cause black bars.

 

 

 

 

Set your cable/satellite box to stretch or widescreen mode to eliminate the bars.

Picture has a Red/Green or Pink tint.

 

 

 

Make sure the Component cables are connected to the correct jacks.

Closed Captioning not working.

 

 

 

If you are using a Cable/Satellite box, you must set Closed Captioning on the box,

 

 

 

 

not your TV.

Snowy picture.

 

 

 

Your cable box may need a

 

 

 

 

company.

Ghosting on picture

Horizontal bars appear to , jitter or shimmer on the image.

Vertical bars appear to , jitter or shimmer on the image.

Screen is black and power indicator light blinks steadily.

Image is not centered on the screen.

This is sometimes caused by compatibility issues with your cable box. Try connecting Component cables instead.

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.

Adjust the horizontal and vertical position.

The screen position must be adjusted on the output source (i.e. STB) with a digital signal.

The picture appears distorted in the corner of the screen.

The “Resets all settings to the default values” message appears.

If "Just Scan" is selected with some external devices, the picture may appear distorted in the corner of the screen. This symptom is caused by the external devices, not TV.

This appears when you press and hold the EXIT button for a while. The product settings are reset to the factory defaults.

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Samsung 451 user manual Troubleshooting, Poor picture
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451 specifications

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