Insignia ns-42l780a12 Guía Del Usuario
48
NS-42L780A12/NS-46L780A12/NS-55L780A12 Insignia 42"/46"/55" LCD HDTV, 1080p
www.insigniaproducts.com
Troubleshooting
Video and audio
Warning
Do not try to repair your TV yourself. Contact
authorized service personnel.
authorized service personnel.
Problem
Solution
Picture does not fill the
screen. There are black bars
around the picture.
screen. There are black bars
around the picture.
•
Change the aspect ratio. An increasing amount
of digital TV and movies are presented in wide
screen (16:9). See “Adjusting the TV picture” on
page 24.
of digital TV and movies are presented in wide
screen (16:9). See “Adjusting the TV picture” on
page 24.
No picture (screen is not lit)
and no sound.
and no sound.
•
Press
on the TV or the remote control.
•
•
Make sure that the video cables are connected
securely to your TV.
securely to your TV.
•
•
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 22.
selected. See “Selecting the video input source”
on page 22.
•
Try another channel. The station may be
experiencing problems.
experiencing problems.
•
Make sure that the incoming signal is
compatible.
compatible.
•
Make sure the antenna or cable TV is connected
correctly and securely. See “Connecting a cable
or satellite box” on page 11 or “Connecting an
antenna or cable TV (no box)” on page 14.
correctly and securely. See “Connecting a cable
or satellite box” on page 11 or “Connecting an
antenna or cable TV (no box)” on page 14.
•
Check the closed caption settings. Some TEXT
modes can block the screen.
modes can block the screen.
Dark, poor, or no picture
(screen is lit), but sound is
good.
(screen is lit), but sound is
good.
•
Try another channel. The station may be
experiencing problems.
experiencing problems.
•
Make sure that the antenna or cable TV is
connected correctly and securely. See
“Connecting a cable or satellite box” on page 11
or “Connecting an antenna or cable TV (no box)”
on page 14.
connected correctly and securely. See
“Connecting a cable or satellite box” on page 11
or “Connecting an antenna or cable TV (no box)”
on page 14.
•
Adjust the brightness. See “Adjusting the TV
picture” on page 24.
picture” on page 24.
•
•
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 31.
signal may be low. To check the digital channel
signal strength, see “Checking the digital signal
strength” on page 31.
•
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.
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 your TV.
securely to your TV.
•
The video cable(s) you are using may be bad. Try
a new set.
a new set.
•
Try another channel. The station may be
experiencing problems.
experiencing problems.
No color, dark picture, or
color is not correct.
color is not correct.
•
Try another channel. The station may be
experiencing problems.
experiencing problems.
•
Adjust the color settings. See “Adjusting the TV
picture” on page 24.
picture” on page 24.
•
Make sure that the video cables are connected
correctly and securely to your TV.
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 11
or “Connecting an antenna or cable TV (no box)”
on page 14.
connected correctly and securely. See
“Connecting a cable or satellite box” on page 11
or “Connecting an antenna or cable TV (no box)”
on page 14.
•
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 31.
signal may be low. To check the digital channel
signal strength, see “Checking the digital signal
strength” on page 31.
•
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.
strength is low, adjust the antenna or use a
highly directional outdoor antenna or set-top
antenna with a built-in amplifier.
Only snow (noise) appears
on the screen.
on the screen.
•
Try another channel. The station may be
experiencing problems.
experiencing problems.
•
Make sure that the antenna or cable TV is
connected correctly and securely. See
“Connecting a cable or satellite box” on page 11
or “Connecting an antenna or cable TV (no box)”
on page 14.
connected correctly and securely. See
“Connecting a cable or satellite box” on page 11
or “Connecting an antenna or cable TV (no box)”
on page 14.
•
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 31.
signal may be low. To check the digital channel
signal strength, see “Checking the digital signal
strength” on page 31.
•
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.
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 stripes
appear on the screen.
appear on the screen.
•
Make sure that the antenna or cable TV is
connected correctly and securely. See
“Connecting a cable or satellite box” on page 11
or “Connecting an antenna or cable TV (no box)”
on page 14.
connected correctly and securely. See
“Connecting a cable or satellite box” on page 11
or “Connecting an antenna or cable TV (no box)”
on page 14.
•
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 31.
signal may be low. To check the digital channel
signal strength, see “Checking the digital signal
strength” on page 31.
•
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.
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 your TV.
securely to your TV.
•
The video cable(s) you are using may be bad. Try
a new set.
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. Once you have
determined which device is causing
interference, move it further from the TV to
eliminate the interference.
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. Once 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.
TV, or satellite TV.
The picture has a few bright
or dark spots.
or dark spots.
•
A few bright or dark spots on an LCD screen is
normal. It does not affect the operation of this
TV.
normal. It does not affect the operation of this
TV.
Problem
Solution