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70
NS-40D420NA18 / NS-40D420MX18 / NS-49D420NA18 / NS-55D420NA18 / NS-55D420MX18
www.insigniaproducts.com
Good picture, but
no sound.
•Increase the volume.
• Make sure that the sound is not
muted.
• Make sure that you do not have
headphones connected. When
headphones are connected, no
sound comes from the TV
speakers.
• Change to a different audio
mode. See the Audio Mode
option in Adjusting sound
settings on page 48.
• If you are using a home theater
system, soundbar, or external
speaker system, make sure that
it is turned on and is not muted.
• If you are using a home theater
system, soundbar, or external
speaker system, make sure that
you have selected the correct
output mode.
• If you are using a home theater
system, soundbar, or external
speaker system and have
connected it with a digital
audio cable, select Digital
Audio Format/Audio Delay on
the Audio menu, then set Audio
Format to PCM. See the Digital
Audio Format/Audio Delay
option in Adjusting sound
settings on page 48.
• Make sure that the audio cables
are connected correctly and
securely to your TV.
• Make sure that the antenna or
cable TV is connected correctly
and securely. See Connecting a
cable or satellite box on
page 18 or Connecting an
antenna or cable TV (no box) on
page 21.
• If you are using an antenna, the
digital channel signal may be
low. To check the digital
channel signal strength, see
Checking the digital signal
strength on page 53.
• 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.
• The audio cables you are using
may be bad. Try a new set.
Problem Solution
Poor picture.
• Make sure that the room is not
too bright. Light reflecting off
the screen can make the picture
difficult to see.
• If an S-VHS camera or a
camcorder is connected while
another connected device is
turned on, the picture may be
poor. Turn off one or more
devices.
Good sound, but
poor color.
• Adjust the contrast, color, and
brightness settings. See
Adjusting the TV picture on
page 46.
Audio noise.
• Other devices (for example, a
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.
No output from
one of the
speakers.
• Adjust the audio balance. See
Adjusting sound settings on
page 48.
• Test the TV’s speakers. See
Testing the TV speakers on
page 67. If one or both of the
speakers fails, try one of the
following solutions:
• Make sure that the audio
cables are connected
correctly and securely to your
TV.
• Make sure that the audio
cables are connected to the
AUDIO OUT jacks on the
connected device.
• Try a different set of audio
cables.
• Make sure that the sound on
the connected device is not
muted.
• Try connecting the device to
a different TV. If you do not
hear sound, the problem is
with the device.
After images
appear.
• Do not display a still image,
such as a logo, game, or
computer image, for an
extended period of time. This
can cause a permanent
after-image to be burned into
the screen. This type of damage
is not covered by your warranty.
Problem Solution
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