Troubleshooting; Video And Audio - Dynex DX-42E250A12 User Manual

Troubleshooting

Troubleshooting
Warning
Do not try to repair your TV yourself. Contact
authorized service personnel.

Video and audio

Problem Solution
Picture does not fill • Change the aspect ratio. An increasing
the screen. There are amount of digital TV and movies are
black bars around presented in wide screen (16:9). See
the picture. "Adjusting the TV picture" on page 17.
No picture (screen is
• Press
not lit) and no
• Make sure that the video cables are
sound.
connected securely to the back of your TV.
• Adjust the contrast and brightness. See
"Adjusting the TV picture" on page 17.
• Make sure that the power cord is plugged
in.
• Make sure that the correct video input
source is selected. See "Selecting the video
input source" on page 16.
• Try another channel. The station may be
experiencing problems.
• Make sure that the incoming signal is
compatible.
• Make sure the antenna or cable TV is
connected correctly and securely. See
"Connecting a cable or satellite box" on
page 8 or "Connecting an antenna or cable
TV (no box)" on page 10.
• Check the closed caption settings. Some
TEXT modes can block the screen.
Dark, poor, or no • Try another channel. The station may be
picture (screen is lit), experiencing problems.
but sound is good. • Make sure that the antenna or cable TV is
connected correctly and securely. See
"Connecting a cable or satellite box" on
page 8 or "Connecting an antenna or cable
TV (no box)" on page 10.
• Adjust the brightness. See "Adjusting the TV
picture" on page 17.
• Make sure that the correct picture mode is
selected. See "Adjusting the TV picture" on
page 17.
• If you are using an antenna, the digital
channel signal may be low.
• If you are using an antenna and the signal
strength is low, adjust the antenna or use a
highly directional outdoor antenna or
set-top antenna with a built-in amplifier.
• Make sure that the video cables are
connected securely to the back of your TV.
• The video cable(s) you are using may be
bad. Try a new set.
No color, dark • Try another channel. The station may be
picture, or color is experiencing problems.
not correct. • Adjust the color saturation. See "Adjusting
the TV picture" on page 17.
• Make sure that the video cables are
connected correctly and securely to the
back of your TV.
• Make sure that the antenna or cable TV is
connected correctly and securely. See
"Connecting a cable or satellite box" on
page 8 or "Connecting an antenna or cable
TV (no box)" on page 10.
• If you are using an antenna, the digital
channel signal may be low.
• If you are using an antenna and the signal
strength is low, adjust the antenna or use a
highly directional outdoor antenna or
set-top antenna with a built-in amplifier.
on the TV or the remote control.
Problem Solution
Only snow (noise) • Try another channel. The station may be
appears on the experiencing problems.
screen. • Make sure that the antenna or cable TV is
connected correctly and securely. See
"Connecting a cable or satellite box" on
page 8 or "Connecting an antenna or cable
TV (no box)" on page 10.
• If you are using an antenna, the digital
channel signal may be low.
• If you are using an antenna and the signal
strength is low, adjust the antenna or use a
highly directional outdoor antenna or
set-top antenna with a built-in amplifier.
Dotted lines or • Make sure that the antenna or cable TV is
stripes appear on connected correctly and securely. See
the screen. "Connecting a cable or satellite box" on
page 8 or "Connecting an antenna or cable
TV (no box)" on page 10.
• If you are using an antenna, the digital
channel signal may be low.
• If you are using an antenna and the signal
strength is low, adjust the antenna or use a
highly directional outdoor antenna or
set-top antenna with a built-in amplifier.
• Make sure that the video cables are
connected securely to the back of your TV.
• The video cable(s) you are using may be
bad. Try a new set.
• Other devices (for example, surround sound
receiver, external speakers, fans, or hair
dryers) may be interfering with your TV. Try
turning off one device at a time to
determine which device is causing
interference. After you have determined
which device is causing interference, move
it further from the TV to eliminate the
interference.
Double images. • Use a highly directional outdoor antenna,
cable TV, or satellite TV.
The picture has a • A few bright or dark spots on an LCD screen
few bright or dark is normal. It does not affect the operation of
spots. this TV.
Good picture, but no • Increase the volume.
sound. • Make sure that the sound is not muted.
• Unplug the headphones.
• Make sure that the correct audio mode is
selected.
• Make sure that the audio cables are
connected correctly and securely to the
back of your TV.
• Make sure that the antenna or cable TV is
connected correctly and securely. See
"Connecting a cable or satellite box" on
page 8 or "Connecting an antenna or cable
TV (no box)" on page 10.
• If you are using an antenna, the digital
channel signal may be low.
• The audio cable(s) you are using may be
bad. Try a new set.
Picture quality is • The problem may be caused by a poor or
good on some weak signal from the broadcaster or cable
channels and poor TV provider.
on others. Sound is • If you connect to cable or satellite TV
good. without a set-top box and experience poor
picture quality, you may need to install a
set-top box to improve signal reception and
picture quality. Contact your cable or
satellite TV provider about upgrading to a
set-top box.
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