Samsung LN40C540 user manual Troubleshooting, Solutions and Explanations

Other Information

Troubleshooting

If the TV seems to have a problem, first try this list of possible problems and solutions. If none of these troubleshooting tips apply, visit “www.samsung.com”, then click on Support, or call Samsung customer service at 1-800-SAMSUNG.

Issues	Solutions and Explanations
Poor picture	First of all, please perform the Picture Test and confirm that your TV is properly displaying the test
	image. (go to MENU - Support - Self Diagnosis - Picture Test) (P. 22)
	If the test image is properly displayed, the poor picture may be caused by the source or signal.
The TV image does not look as good as	• If you have an analog cable/satellite box, upgrade to a digital set top box. Use HDMI or
it did in the store.	Component cables to deliver HD (high definition) picture quality.
	• Cable/Satellite subscribers: Try HD stations from the channel line up.
	• Air/Cable Antenna connection: Try HD stations after performing Auto program.
	✎✎ Many HD channels are upscaled from SD(Standard Definition) contents.
	• Adjust the Cable/Sat box video output resolution to 1080i or 720p.
The picture is distorted: macroblock	• Compression of video contents may cause picture distortion, especially in fast moving pictures
error, small block, dots, pixelization.	such as sports and action movies.
	• Low signal level can cause picture distortion. This is not a TV problem.
	• Mobile phones used close to the TV (up to 3.3 ft) may cause noise in picture on analog and
	digital TV.
Color is wrong or missing.	• If you’re using Component connection, make sure the component cables are connected to the
	correct jacks. Incorrect or loose connections may cause color problems or a blank screen.
There is poor color or brightness.	• Adjust the Picture options in the TV menu.
	(go to Picture mode / Color / Brightness / Sharpness) (P. 15)
	• Adjust Energy Saving option in the TV menu (go to MENU - Picture - ECO Solution - Energy
	Saving) (P. 15)
	• Try resetting the picture to view the default picture setting.
	(go to MENU - Picture - Picture Reset) (P. 17)
There is a dotted line on the edge of	• If the picture size is set to Screen Fit, change it to 16:9.
the screen.	• Change cable/satellite box resolution.
The picture is black and white.	• If you are using an AV composite input, connect the video cable (yellow) to the Green jack of
	component input 1 on the TV.
When changing channels, the picture	• If connected to a cable box, please try to reset it. (reconnect the AC cord and wait until the
freezes or is distorted or delayed.	cable box reboots. It may take up to 20 minutes)
	• Set output resolution of the cable box to 1080i or 720p.
Sound Problem	First of all, please perform the Sound Test to confirm that your TV audio is properly operating.
	(go to MENU - Support - Self Diagnosis - Sound Test (P. 22)
	If the audio is OK, the sound problem may caused by the source or signal.
There is no sound or the sound is too	• Please check the volume of the device (Cable/Sat Box, DVD, Blu-ray etc) connected to your TV.
low at maximum volume.
The picture is good but there is no	• Set the Speaker Select option to TV speaker in the Sound menu. (P. 18)
sound.	• If you are using an external device, check the device’s audio output option (ex. you may need to
	change your cable box’s audio option to HDMI when you have a HDMI connected to your TV).
	• If you are using a DVI to HDMI cable, a separate audio cable is required.
	• Reboot the connected device by reconnecting the device’s power cable.
The speakers are making an	• Check cable connections. Make sure a video cable is not connected to an audio input.
inappropriate noise.	• For Antenna or Cable connections, check the signal information. Low signal level may cause
	sound distortion.
	• Perform the Sound Test as explained above.

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