Samsung 450 4+ Series User Manual page 38

Other Information
Issues
The speakers are making an inappropriate
noise.
No Picture, No Video
The TV won't turn on.
The TV turns off automatically.
There is no picture / Video.
RF(Cable/Antenna) Connection
The TV is not receiving all channels.
The picture is distorted: macroblock error,
small block, dots, pixelization.
PC Connection
A "Mode Not Supported" message
appears.
"PC" is always shown on the source list,
even if a PC is not connected.
The video is OK but there is no audio.
Others
Purple/green rolling horizontal bars and
buzzing noise from the TV speakers with
Component cable connection.
The picture won't display in full screen.
The remote control does not work.
The TV is making a humming noise.
38
English
Solutions and Explanations
• Check cable connections. Make sure a video cable is not connected to an audio input.
• For antenna or Cable connections, check the signal strength. Low signal level may cause sound
distortion.
• Perform the Sound Test as explained above.
• Make sure the AC power cord is securely plugged in to the wall outlet and the TV.
• Make sure the wall outlet is working.
• Try pressing the POWER
on, refer to "Remote control does not work" below.
• Ensure the Sleep Timer is set to Off in the Setup menu (p. 20).
• If your PC is connected to the TV, check your PC power settings.
• Make sure the AC power cord is plugged in securely to the wall outlet and the TV.
• When watching TV from an antenna or cable connection, the TV will turn off after 10 - 15 minutes if
there is no signal.
• Check cable connections(remove and reconnect all cables connected to the TV and external devices).
• Set your external devices' (Cable/Sat Box, DVD, Blu-ray etc) video outputs to match the connections
to the TV input. For example, if an external device's output is HDMI, it should be connect to an HDMI
input on the TV.
• Make sure your connected devices are powered on.
• Be sure to select the TV's correct source by pressing the
• Reboot the connected device by reconnecting the device's power cable.
• Make sure the coaxial cable is connected securely.
• Please try Auto Program to add available channels to the channel list. Go to
Auto Program then select Auto and make sure the correct Cable TV signal type is set in the menu.
(p. 14)
• Verify the Antenna is positioned correctly.
• Compression of video contents may cause picture distortion, especially with fast moving pictures
such as sports and action movies.
• A low signal can cause picture distortion. This is not a TV problem.
• Set your PC's output resolution so it match the resolutions supported by the TV (p. 10).
• This is normal; "PC" is always shown on the source list, regardless of whether a PC is connected.
• If you are using an HDMI connection, check the audio output setting on your PC.
• Remove the left and right audio connections from the set-top-box. If the buzzing stops, this indicates
that the set-top-box has a grounding issue. Replace the Component video cables with an HDMI
connection.
• HD channels will have black bars on either side of the screen when displaying upscaled SD (4:3)
contents.
• Black bars on the top and bottom will appear during movies that have aspect ratios different from
your TV.
• Adjust the picture size options on your external device or TV to full screen.
• Replace the remote control batteries with correct the poles (+/–) in the right direction.
• Clean the sensor's transmission window on the remote.
• Try pointing the remote directly at the TV from 5~6 feet away.
• Plasma TVs typically make a soft humming sound. This is normal. It's caused by the electrical charges
that are used to create the images on the screen.
• If the humming sound is loud, you may have set the brightness on the TV too high. Try setting the
brightness lower.
• You can also have loud humming if the back of your Plasma TV is too close to a wall or other hard
surface. Also try rerouting your connection cables.
• Improper installation of wall mount can create excessive noise.
button on the TV to make sure the problem is not the remote. If the TV turns
SOURCE button on the remote control.
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