Magnavox 42MF439B User Manual

Also see for 42MF439B - 42" LCD TV: Quick start guide Brochure

Contents

36ENTROUBLESHOOTINGTroubleshooting GuideIf 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.5Symptom RemedyNo powerMake sure the AC power cord is plugged in.Make sure that the AC outlet supplies the proper voltage, plug another electricalappliance into the AC outlet.If a power failure occurs, unplug the AC power cord for 1 minute to allow the unit toreset itself.•••Control button does not work. Press only one button at a time. Do NOT press more than one buttons at the sametime.•Power is ON but no screenimage.Check whether the connection of the antenna, cable receiver or satellite box isconnected correctly.Check whether all the cables to the unit are connected to the correct output jack ofyour device like BD/DVD recorder.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 inPC mode. Tap any key on the keyboard to wake up your computer.••••No picture or soundCheck 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 ofyour 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.Check whether the connection of the antenna, cable receiver or satellite box isconnected 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 PCmode. 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 andcurrent 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 adjustthe desired volume.••••••••••No color View other TV channels. The problem might be limited to the broadcasting station.Adjust “Color” in the main menu.••Adjusted ‘‘PICTURE” or ‘‘SOUND”is not effective every time turnon the unit.You must set ”Home” in ”Location” (Refer to page 32).Otherwise, the settings you adjusted will not be memorized after you turn off the unit.•Sound OK, picture poorElectrical interference from nearby appliances may affect picture quality.Adjust “Contrast” and “Brightness” in the main menu.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.Check if the audio cable is connected in correctly .••You see a distorted picture orhear an unusual sound.You may be getting interference from electrical appliances, automobiles, motorcyclesor fluorescent lights.Try moving the unit to another location to see if this is the cause of the problem.••Ghosts, lines or streaks inpictureElectrical interference from nearby appliances may affect picture quality.View other TV channels. The problem might be limited to the broadcasting station.••You see “noise” or “trash” on thescreen.When the capabilities of the unit exceed the capabilities of the digital broadcasting,the signal will be increased to match the capabilities of the display of the unit. Thismay cause noise or trash.•Different color marks on the TVscreenMove your TV away from nearby electric appliances. Turn off the unit and wait 1minute before turning it back on.View other TV channels. The problem might be limited to the broadcasting station.••