5Troubleshooting Guide

TROUBLESHOOTING

If the unit does not perform properly when operated as instructed in this manual, check the following chart and all connections once before calling for service.

Symptom

Remedy

		• Make sure the AC power cord is plugged in.
	No power	• Make sure that the AC outlet supplies the proper voltage, plug another electrical
	No power	appliance into the AC outlet.
		• If a power failure occurs, unplug the AC power cord for 1 minute to allow the unit to
		reset itself.
	Control button does not work.	• Press only one button at a time. Do NOT press more than one buttons at the same
	Control button does not work.	time.
		time.
		• Check whether the connection of the antenna, cable receiver or satellite box is
		connected correctly.
	Power is ON but no screen	• Check whether all the cables to the unit are connected to the correct output jack of
	Power is ON but no screen	your device like BD/DVD recorder.
	image.	your device like BD/DVD recorder.
	image.	• Make sure that the selected input mode is connected to the working input jack.

		• Check if your computer is NOT in sleep mode when the input mode of this unit is in
		PC mode. Tap any key on the keyboard to wake up your computer.
		• Check if the power is on.
		• Check if the right input mode is selected.
		• Check whether all the cables to the unit are connected to the correct output jack of
		your device like BD/DVD recorder.
		• View other TV channels. The problem might be limited to the broadcasting station.
		• Turn off the unit and wait for about 1 minute, then turn on the unit again.
	No picture or sound	• Check whether the connection of the antenna, cable receiver or satellite box is
	No picture or sound	connected correctly.
		• Make sure that the selected input mode is connected to the working input jack.
		• Check if your computer is NOT in sleep mode when the input mode of this unit is in PC
		mode. Tap any key on the keyboard to wake up your computer.
		• Make sure that the sound is not muted. Press [MUTE] so that the volume bar and
		current volume level will appear on the TV screen.
		• Make sure that the volume is NOT set to “0” or “Mute”. If so, use [VOL + / -]to adjust
		the desired volume.
	No color	• View other TV channels. The problem might be limited to the broadcasting station.
	No color	• Adjust “Color” in the main menu.
		• Adjust “Color” in the main menu.
	Adjusted ‘‘PICTURE” or ‘‘SOUND”	• You must set ”Home” in ”Location” (Refer to page 32).
	is not effective every time turn	Otherwise, the settings you adjusted will not be memorized after you turn off the unit.
	on the unit.
	on the unit.

		• Electrical interference from nearby appliances may affect picture quality.
		• Adjust “Contrast” and “Brightness” in the main menu.
	Sound OK, picture poor	• View other TV channels. The problem might be limited to the broadcasting station.
		• For the best picture quality, watch “high definition” wide screen programs.
		If the HD content is not available, watch “standard definition” programs instead.
	Picture OK, sound poor	• View other TV channels. The problem might be limited to the broadcasting station.
	Picture OK, sound poor	• Check if the audio cable is connected in correctly .
		• Check if the audio cable is connected in correctly .
	You see a distorted picture or	• You may be getting interference from electrical appliances, automobiles, motorcycles
	You see a distorted picture or	or fluorescent lights.
	hear an unusual sound.	or fluorescent lights.
	hear an unusual sound.	• Try moving the unit to another location to see if this is the cause of the problem.


	Ghosts, lines or streaks in	• Electrical interference from nearby appliances may affect picture quality.
	picture	• View other TV channels. The problem might be limited to the broadcasting station.

	You see “noise” or “trash” on the	• When the capabilities of the unit exceed the capabilities of the digital broadcasting,
	screen.	the signal will be increased to match the capabilities of the display of the unit. This
	screen.	may cause noise or trash.
		may cause noise or trash.
	Different color marks on the TV	• Move your TV away from nearby electric appliances. Turn off the unit and wait 1
	screen	minute before turning it back on.
	screen	• View other TV channels. The problem might be limited to the broadcasting station.

36

42MF439B specifications

The Magnavox 42MF439B is a striking addition to the world of flat-screen televisions, combining modern design with impressive performance features. With its 42-inch display, this television offers a captivating viewing experience, suitable for various room settings, whether it's a cozy living room or a spacious entertainment area.

One of the standout features of the 42MF439B is its high-definition resolution. With a native 1080p resolution, this TV delivers crisp and clear images that enhance the detail and vibrancy of your favorite movies, sports, and video games. The LED backlighting technology contributes to improved picture quality, providing brighter colors and deeper blacks, which is essential for an immersive viewing experience.

In terms of connectivity, the Magnavox 42MF439B is equipped with multiple HDMI ports, allowing users to connect various devices such as gaming consoles, Blu-ray players, and streaming devices with ease. Additionally, it features USB ports for direct playback of multimedia content. Its built-in digital tuner ensures compatibility with over-the-air broadcasts, making it easier for users to access their favorite channels without the need for a separate set-top box.

Sound quality is another crucial aspect of the Magnavox 42MF439B. It comes with integrated speakers that deliver decent audio output, suitable for everyday viewing. However, for those who seek an enhanced audio experience, it can easily be paired with a soundbar or external audio system via its audio output options.

The design of the television is sleek and modern, featuring a slim bezel that maximizes the screen area while minimizing distractions. It can be mounted on a wall or placed on a stand, providing versatility in setup according to personal preferences.

Energy efficiency is also a consideration, as this model is designed to consume less power without compromising on performance. This is an essential feature for environmentally conscious consumers looking to reduce their energy bills.

In summary, the Magnavox 42MF439B is a well-rounded television that offers a combination of high-definition picture quality, versatile connectivity options, and user-friendly features. Its stylish design and solid performance make it an attractive choice for anyone in search of a reliable flat-screen TV. With the right balance of technology and practicality, this model stands out as a commendable option in the competitive television market.

Magnavox 42MF439B user manual 5Troubleshooting Guide

Models: 42MF439B

TROUBLESHOOTING