Mitsubishi Electronics L75-A94 manual Common Picture Problems, Symptom Remarks

32Appendices

Appendix B: Troubleshooting, continued

Common Picture Problems

Symptom Remarks

1.Picture does not look like a high-defini- Compare the picture to the TV’s test picture (Picture > Picture+ menu)

tion picture.	to check if the source signal is supplying a lesser-quality image.
	Not all signals are high-definition signals. To receive high-definition
	programming from your cable or satellite provider, you must sub-
	scribe 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.	• Press MENU on the remote control. If the menu displays, then
	there is a problem with the incoming signal.
	• Check that all video inputs are plugged in firmly to the correct
	input jacks.
	• Press and hold the POWER button on the control panel for ten
	seconds to perform System Reset.
3. A color program appears as a black	• If using component video, check that the red, green, and blue
and white image, or the colors are dim,	input cables are correctly connected to the red, green, and blue
or the screen is black.	component video jacks.
	• If using composite video, check that the incoming cable is con-
	nected the TV’s green Y/VIDEO jack.
	• The PerfectColor color balance has been incorrectly set. Reset
	the PerfectColor balance.
4. Picture from an HDMI input is noisy	• Compare the picture to the TV’s test picture (Picture > Picture+
(poor quality).	menu) to check the source of the noise.
	• Upgrade a standard (unmarked) HDMI cable to a high-speed
	HDMI cable.
Network

Symptom

I cannot connect the TV to the network.

Remarks

Go the Setup > Network menu. Obtain the TV MAC address and provide it to the router.

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