Vizio L32 User Manual page 37

Snow appears on screen
Power is ON but no screen image.
Wrong or abnormal colors appear.
Control buttons do not work.
Remote Control does not work.
There appears to be image quality
issues.
You cannot see a picture.
You see a distorted picture or hear
unusual sound.
The picture has abnormal patterns.
The display image does not cover
the entire screen.
You can see a picture but you
cannot hear sound.
The LCD TV has pixels that are
always bright, dark, or colored.
You see "noise" or "trash" on the
screen.
You switch to a different input and
the volume changes.
You switch to a different input and
the screen size changes.
Version - 4/14/2005
Check your antenna connection.
Check TV / CABLE selection.
Make sure the video cable supplied with the LCD display is tightly
secured to the video output port on the back of the computer. If the
other end of the video cable is not attached permanently to the LCD
display, tightly secure it to the LCD display.
  A djust brightness and contrast.
If you are using a Macintosh older than G3, you will need a
Macintosh adapter.
Check Source settings.
If any colors (red, green, or blue) are missing, check the video cable
to make sure it is securely connected. Loose or broken pins in the
cable connector could cause an improper connection.
Connect the LCD display to another computer.
Press only one button at a time.
Make sure batteries are inserted correctly
Batteries could be weak.
TV: For best image quality, "Standard Definition" TV should be
viewed as 4:3.
COMPONENT 480i: For best image quality the "YCbCr" Input
should be used.
Make sure that the power cord is plugged into a grounded electrical
outlet.
Make sure that the power button is turned on.
Make sure that the selected input source is connected to a working
input source.
If your LCD TV is connected to your computer in RGB or HDMI
mode, press any key on your keyboard to "wake" your computer.
You may be getting interference from electrical appliances, cars,
motorcycles, or fluorescent lights. Try moving your LCD TV to
another location.
Make sure that the input source cable is attached securely and
correctly to the back of your LCD TV.
Make sure that the video input source is within the range of your
LCD TV. Compare the video input source's specifications with your
LCD TV specifications.
If you are using RGB mode, make sure that H Size and V Position in
the OSD are set correctly.
If you are using TV, AV1, AV2, or component (Analog HD) with 480i
input, use the WIDE button on the remote control to scroll through
various screen modes.
Make sure that the volume is not turned down.
Make sure that the sound is not muted.
Make sure that your audio input source cables are connected
securely and correctly.
Your LCD TV is manufactured using an extremely high level of
precision technology.
However, sometimes some pixels of your LCD TV may not display.
Pixel defects within industry specifications are inherent to this type
of product and do not constitute a defective product.
When your LCD TV's digital capabilities exceed a digital broadcast
signal, the signal is up-converted (increased) to match your LCD
TV's display capabilities. Up-converting can cause noise or trash.
The LCD TV remembers the volume level from the last time you
used a particular input (AV1, AV2, Analog HD, Digital HD, and TV).
The LCD TV remembers the viewing mode from the last time you
used a particular input (AV1, AV2, Analog HD, Digital HD, and TV).
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VIZIO L32 User Guide