Mitsubishi Electronics 737 SERIES, 837 SERIES manual Picture Symptom Remarks, Sound Symptom Remarks

Appendices 77

Appendix E: Troubleshooting, continued

Picture

	Symptom		Remarks
1.	Picture does not look like a high-definition		Not all signals are high-definition signals. To receive high-defini-
	picture.		tion programming from your cable or satellite provider, you must
			subscribe to the provider’s high-definition service. Some over-
			the-air broadcasts are in high-definition and can be received with
			a high-quality antenna suited to your location.
2.	TV has sound but no picture.		• Check that all video inputs are plugged in firmly.
			• Press and hold the POWER button on the control panel for
				ten seconds to perform System Reset.
3.	Picture has become dimmer.		•	The lamp is nearing the end of its life. Order a new lamp.
			• Adjust picture brightness and contrast to maximum levels.
			• Change Lamp Energy from Standard to Bright.
4.	There is a large black or gray rectangle on		The TV’s analog closed captioning has been set to “text” mode
	the screen.		in the Captions menu. Turn off because there is no text informa-
			tion being broadcast.
5.	You cannot view a picture when playing a		Check your VCR’s owner’s guide for further troubleshooting.
	VHS tape.
6.	VCR or DVD player’s on-screen menus jitter		Stop playback. Possible cause: Many VCRs and DVD players
	up and down.		provide on-screen menus at only half-resolution that may
			appear to jitter up and down.
7.	When viewing a stopped VCR, white lines		• Turn off video mute for the VCR.
	are rolling on the screen.		• Begin playing the tape.
			• Change the VCR input from Line 1 to the VCR antenna input.
8.	A color program appears as a black and		The PerfectColor color balance has been incorrectly set. Reset
	white image, or the colors are dim, or the		the PerfectColor balance.
	screen is black.
9.	Picture from an HDMI input is noisy (poor		Upgrade a Category 1 (unmarked) HDMI cable to a Category 2
	quality).		high-speed HDMI cable.
10.	The image from a computer appears dis-		•	Normal TV operation. The TV does not correct distortion in
	torted when viewed on the TV.			the picture from a computer because the correction process
				may cut off the edges of the image.
			• The aspect ratio may be wrong for the image. Press MORE
				and then 0 (FORMAT) to change.
Sound
	Symptom	Remarks
1.	There is no sound even when the	• Check if the MUTE key is on.
	volume is turned up.	• The TV’s “Listen to:” setting may be set to SAP (analog program
			from the ANT input) but no SAP is being broadcast.
		• Check that the Speakers option is set to TV to hear sound from
			the TV speakers. Possibly sound is being sent to one of the audio
			outputs for an A/V receiver or headphones.
		• If using an A/V receiver, check that the Speakers option is set to AV
			Receiver to hear sound from the A/V receiver speakers.
		• Press and hold the POWER button on the control panel for 10
			seconds to perform System Reset.