Magnavox 42MD459B User Manual page 56

[] Troubleshooting Guide
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.
No power
You cannot turn offthe unit
immediately.
Control button does not work.
Power is ON but no screen
image.
No picture or sound
No color
Adjusted "PICTURE" or "SOUND"
is not effective every time turn
on the unit.
Sound OK, picture poor
Picture OK, sound poor
You see a distorted picture or
hear an unusual sound.
Ghosts, lines or streaks in
picture
You see "noise" or "trash" on the
screen.
Different color marks on the TV
screen
Make sure the AC power cord is plugged in.
Make sure that the AC outlet supplies the proper voltage, plug another electrical
appliance into the AC outlet.
Ifa power failure occurs, unplug the AC power cord for 1 minute to allow the unit
to reset itself.
The unit may take about 1 minute to be shutting down when;
- you turn offthis unit right after you turned on this unit.
- you turn offthis unit right after you switch any input modes such as the DTV/TV
channels, Video, Component or HDMI while a disc is playing back.
Press only one button at a time. Do NOT press more than one buttons at the same
time.
Check whether the connection of the antenna, cable receiver or satellite box is
connected correctly.
Check whether all the cables to the unit are connected to the correct output jack
of your 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
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 otherTV channels. The problem might be limited to the broadcasting station.
Turn offthe 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 is
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"O"or"Mute". If so, use [VOL+ / -] to
adjust the desired volume.
View otherTV channels. The problem might be limited to the broadcasting station.
Adjust "Color" in the main menu.
You must set "Home" in "Location" (Refer to page 35).
Otherwise, the settings you adjusted will not be memorized after you turn off the
unit.
Electrical interference from nearby appliances may affect picture quality.
Adjust"Contrast"and"Brightness" in the main menu.
View otherTV 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.
View otherTV channels. The problem might be limited to the broadcasting station.
Check if the audio cable is connected in correctly.
You may be getting interference from electrical appliances, automobiles,
motorcycles or fluorescent lights.
Try moving the unit to another location to see if this is the cause of the problem.
Electrical interference from nearby appliances may affect picture quality.
View otherTV channels. The problem might be limited to the broadcasting station.
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.This may cause noise or trash.
View other TV channels. The ht be limited to the station.
EN