AUO PS42A, User Manual

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40 | Troubleshooting
LCD does not display properly
Symptom Cause and solution
There are black spots (dots that
do not light when on) and
bright spots (dots that remain
lit when off) on the screen This is not a malfunction, it is due to the characteristics of
LCDs.
The brightness of the screen is
uneven Depending on the content displayed, such symptoms may
occur. This is due to the characteristics of LCDs, and is not
a malfunction.
There are thin vertical stripes
on the screen Depending on the content displayed, such symptoms may
occur. This is due to the characteristics of LCDs, and is not
a malfunction.
Moiré patterns occur when
displaying fine patterns Although such symptoms may occur when displaying fine
patterns, it is due to the characteristics of the LCD panel,
and is not a malfunction.
Colors appear strange at some
viewing angles The change in hue increases depending on the viewing
angle (the angle at which the screen is viewed).
Condition of the screen display
changes The display condition of the screen changes over time.
Depending on the ambient temperature, the image may be
affected by the display condition of the screen. This is due
to the characteristics of the LCD panel, and is not a
malfunction.
A faint image of the previous
screen remains even the
screen image has changed When a still image is displayed for a long time, residual
images may occur. Press the POWER button on the
remote control to switch the equipment to standby, or
display a moving screen (screensaver); the residual image
will disappear naturally in about one day. If a still image is
displayed for a long time, the residual image may not
disappear, but this is not a malfunction. We recommend
that you switch the power off when the equipment is not in
use.
The screen displays strange
colors Open the OSD screen and check the following items.
• If the OSD screen is not displaying normally, there may
be a failure in the LCD.
• Please consult your dealer / after-sales service desk for
service.
• If the OSD screen displays normally, the equipment is
not malfunctioning. Please reset the Picture settings
(Picture > Reset Picture Setting) or restore to the
factory default values (Setup > Restore Default) .