Troubleshooting Guide

2–22 www.hp.com Troubleshooting Guide
Troubleshooting Without Diagnostics
Clicking noise coming from
inside a CRT monitor.
Electronic relays have
been activated inside
the monitor.
None. It is normal for some monitors
to make a clicking noise when
turned on and off, when going in
and out of standby mode, and when
changing resolutions.
High pitched noise coming
from inside a flat panel
monitor.
Brightness and/or
contrast settings are too
high.
Lower brightness and/or contrast
settings.
Fuzzy focus; streaking,
ghosting, or shadowing
effects; horizontal scrolling
lines; faint vertical bars; or
unable to center the picture
on the screen.
(flat panel monitors using
an analog VGA input
connection only)
Flat panel monitor’s
internal digital
conversion circuits may
be unable to correctly
interpret the output
synchronization of the
graphics card.
1. Select the monitor’s
Auto-Adjustment option in the
monitor’s on-screen display
menu.
2. Manually synchronize the Clock
and Clock Phase on-screen
display functions. To download
a SoftPaq that will assist you
with the synchronization, go to
the following Web site, select
the appropriate monitor, and
download either SP20930 or
SP22333:
www.hp.com/support
Graphics card is not
seated properly or is
bad.
1. Reseat the graphics card.
2. Replace the graphics card.
Certain typed symbols do
not appear correct.
The font you are using
does not support that
particular symbol.
Use the Character Map to locate the
and select the appropriate symbol.
Click Start > All Programs >
Accessories > System Tools >
Character Map. You can copy
the symbol from the Character Map
into a document.
Solving Display Problems (Continued)
Problem Cause Solution