Insignia NS-42L780A12, NS-46L780A12, NS-55L780A12 Troubleshooting, Video and audio, Problem, Problem, Solution, Solution

NS-42L780A12/NS-46L780A12/NS-55L780A12

Troubleshooting

Warning

	Do not try to repair your TV yourself. Contact
	authorized service personnel.
Video and audio
Problem		Solution
Picture does not fill the		• Change the aspect ratio. An increasing amount
screen. There are black bars
		of digital TV and movies are presented in wide
around the picture.
		screen (16:9). See “Adjusting the TV picture” in
		the online User Guide.
No picture (screen is not lit)		• Press	on the TV or the remote control.
and no sound.
		• Make sure that Audio Only option is set to Off.
		See “Playing TV audio only” in the online User
		Guide.
		• Make sure that the video cables are connected
		securely to your TV.
		• Adjust the contrast and brightness. See
		“Adjusting the TV picture” in the online User
		Guide.
		• 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”
		in the online User Guide.
		• 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” or “Connecting an antenna or
		cable TV (no box)” in the online User Guide.
		• Check the closed caption settings. Some TEXT
		modes can block the screen.
Dark, poor, or no picture		• Try another channel. The station may be
(screen is lit), but sound is
		experiencing problems.
good.
		• Make sure that the antenna or cable TV is
		connected correctly and securely. See
		“Connecting a cable or satellite box” or
		“Connecting an antenna or cable TV (no box)” in
		the online User Guide.
		• Adjust the brightness. See “Adjusting the TV
		picture” in the online User Guide.
		• Make sure that the correct picture mode is
		selected. See “Adjusting the TV picture” in the
		online User Guide.
		• 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” in the online User Guide.
		• 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 your TV.
		• The video cable(s) you are using may be bad. Try
		a new set.

Problem	Solution
No color, dark picture, or	• Try another channel. The station may be
color is not correct.
	experiencing problems.
	• Adjust the color settings. See “Adjusting the TV
	picture” in the online User Guide.
	• Make sure that the video 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” or
	“Connecting an antenna or cable TV (no box)” in
	the online User Guide.
	• 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” in the online User Guide.
	• 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.
Only snow (noise) appears	• Try another channel. The station may be
on the screen.
	experiencing problems.
	• Make sure that the antenna or cable TV is
	connected correctly and securely. See
	“Connecting a cable or satellite box” or
	“Connecting an antenna or cable TV (no box)” in
	the online User Guide.
	• 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” in the online User Guide.
	• 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 stripes	• Make sure that the antenna or cable TV is
appear on the screen.
	connected correctly and securely. See
	“Connecting a cable or satellite box” or
	“Connecting an antenna or cable TV (no box)” in
	the online User Guide.
	• 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” in the online User Guide.
	• 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 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. 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.
The picture has a few bright	• A few bright or dark spots on an LCD screen is
or dark spots.
	normal. It does not affect the operation of this
	TV.

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