Mitsubishi Electronics 838 Appendices33, Appendix C Troubleshooting, continued, Home Network

Appendices33

Appendix C: Troubleshooting, continued

Common Picture Problems

Symptom Remarks

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

	nition picture.	Test 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 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.	•	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.	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. A color program appears as a black		• If using component video, check that the red, green, and blue input
	and white image, or the colors are		cables are correctly connected to the red, green, and blue compo-
	dim, or the screen is black.		nent video jacks.
		• If using composite video, check that the incoming cable is con-
			nected the TV’s green Y/VIDEO jack.
		• 838 Series. The PerfectColor color balance has been incorrectly
			set. Reset the PerfectColor balance.
5. Picture from an HDMI input is noisy		• Compare the picture to the TV’s test picture (Picture > Picture+ >
	(poor quality).		Test Picture) to check if the noise is internal or external to the TV.
		• Upgrade a Category 1 (unmarked) HDMI cable to a newer type of
			high-speed HDMI cable.
Home Network
	Symptom	Remarks
1.	I cannot connect the TV to the	Go to the Setup > Network menu. Obtain the TV MAC address and
	network.	provide it to the router.
2.	I plugged in a wireless USB adapter,	The network may be locked. Go to Setup > Network. Highlight the
	but the wireless connection is not	network name and supply the pass code.
	working.
3.	The INTERNET key only goes to	Normal operation. The TV receives all internet services through VUDU.
	VUDU.	The TV does not provide full internet access as does a web browser on
		a computer.

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