Mitsubishi Electronics LT-40133 manual TV Power On/Off Symptom Remarks, Picture Symptom Remarks

80Appendices

Appendix E: Troubleshooting, continued

TV Power On/Off

Symptom		Remarks
1.	TV takes an excessively long time to power	• When switched on, the TV needs time to boot up, just as a
	on.	computer does.
		• TV Energy Mode is set to Low Power. Change TV Energy
		Mode to Fast Power On in the Setup menu.
2.	You cannot program the TV to turn on auto-	• The TV may be locked.
	matically (Timer function)	• The clock may not be set.
		• TV Energy Mode is set to Low Power. Change to Fast
		Power On in Setup menu.
3.	The TV will not turn on after being plugged	If light on front panel is blinking, wait for at least one minute for
	in.	the light to turn off, then press POWER again.
4.	TV turned itself off and the light on the front	• Momentary power fluctuation caused the TV to turn off to
	panel started to blink.	prevent damage. Wait for the blue light to stop flashing and
		turn the TV on again.
		• If the TV does not stay on, use the System Reset button on
		the side panel. If this happens frequently, obtain an AC line
		power conditioner/surge protector.
		• An unusual digital signal may have been received, triggering a
		protection circuit. Wait for the light to stop flashing and turn TV
		on.
5.	TV will not power off.	Use the System Reset button or unplug the TV, wait a few
		seconds, then plug in the TV.
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. Picture has become dimmer.		Adjust the backlight setting. Press VIDEO repeatedly to display
		the backlight settings, then use	to change the setting.
3. 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 infor-
		mation being broadcast.

4.You cannot view a picture when playing a Check your VCR’s owner’s guide for further troubleshooting. VHS tape.

5.	VCR or DVD player’s on-screen menus jitter	Possible cause: Many VCRs and DVD players provide on-
	up and down.	screen menus at only half-resolution. These lower-resolution
		graphics may appear to jitter up and down when the TV con-
		verts them to high-definition graphics.
6.	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 viewing source to ANT 1 to watch TV.
7.	A color program appears as a black and	The PerfectColor™ color balance has been incorrectly set.
	white image, or the colors are dim, or the	Reset the PerfectColor balance.
	screen is black.