eMachines W3650, Reference Manual, Page: 82 / 122

Chapter 6: Troubleshooting
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Quality of video cables—Poor quality or the incorrect
type of video cables can cause problems and affect the
video quality. eMachines recommends using
high-quality video cables.
Cable connections must be made correctly for optimal
video quality. A poor cable connection can lower video
quality.
•
Screen resolution—Many TVs cannot display the
default high resolution of your computer and may shift,
scramble, or scroll the picture. For a better picture on a
TV display, you may need to lower the Media Center
screen resolution to 800 × 600 or 640 × 480. For more
information about changing the screen resolution, see
the “Customizing Windows” chapter in the online User
Guide.
•
Size of display device—Small computer monitors for
standard computer applications are generally not
optimized for motion video playback. Although they
offer excellent resolutions and refresh rates, they are
designed to make static white backgrounds with black
text look readable. Some small display devices do not
make colorful motion video look its best. Generally,
video will look better on a larger display device.
•
Age of the TV—Newer TVs usually have more advanced
features, produce a better quality picture, and support
higher screen resolutions. The Media Center video
display will likely be better on a newer model TV.
•
Type of TV (interlaced or progressive scan)
Many TVs use interlaced video. Interlaced video displays
a video frame with two passes of alternating scan lines.
The TV screen first displays the video image odd lines
one at a time, sequentially from top to bottom, then it
fills in the other half of the video image with the even
lines. Because most TVs use this interlaced method to
display the picture on the screen, a standard interlaced
analog TV will most likely flicker when displaying thin
lines and small text. An interlaced video display device
will produce a lower quality display, especially when
viewing and using the Media Center computer functions.
Progressive scan video displays a video frame with one
pass of sequential scan lines. A progressive scan TV
displays the entire picture, drawn sequentially from top
to bottom, without the odd/even interlacing. This results
in a fuller, sharper picture and better display quality for
viewing and using the Media Center computer functions.
The progressive scan picture is also brighter and easier
on your eyes.
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