Dell UltraScan P780 Benutzerhandbuch - Seite 37
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Audible Noise Problems
CRT Scratched
Safety Related Issues
Intermittent Problems
PRODUCT SPECIFIC SYMPTOMS
SPECIFIC SYMPTOMS
Two fine lines on the
screen.
Has humming sound or
high frequency squeal
Screen has scratches or
smudges
Visible signs of smoke
or sparks
Monitor malfunctions on
& off
WHAT YOU SEE
Two fine horizontal
lines (wires) are
visible.
Boot up in the "safe mode"
•
Ensure monitor is in proper video mode
•
Reposition the monitor
•
Loud hum when turning on is normal
•
Turn monitor off and clean the screen
•
Do not perform any troubleshooting steps
•
Monitor needs to be replaced
•
Ensure monitor is in proper video mode
•
Perform monitor reset
•
Perform monitor self test feature check
•
POSSIBLE SOLUTIONS
These damper wires stabilize the vertically
striped aperture grille. This aperture grille
allows more light to pass through to the
screen giving the Trinitron CRT more color
and brightness