Vibrating or rattling noise coming from inside a CRT monitor when powered on.
Cause
Solution
Monitor degaussing coil has been activated.
None. It is normal for the degaussing coil to be activated
when the monitor is powered on.
Clicking noise coming from inside a CRT monitor.
Cause
Solution
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.
Cause
Solution
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).
Cause
Solution
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 SP32347 or SP32202:
http://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.
Cause
Solution
The font you are using does not support that particular
symbol.
Use the Character Map to locate 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.
110 Appendix A Troubleshooting Without Diagnostics
