Shaky/Jittery Video
Wavy picture or fine
movement
•
Perform monitor reset
•
Check environmental factors
•
Relocate and test in other room
Color Purity Problems
Color is not uniform
Has color blotches or
shades
•
Perform degauss
•
Perform monitor reset
•
Check environmental factors esp. woofers
Color Convergence
Problems
Characters show red or
blue at edges
•
Perform monitor reset
•
Adjust the color convergence controls
Missing Color or
Color Flood
Entire screen is purple
or yellow
Entire screen is red,
green or blue
•
Perform monitor reset
•
Perform monitor self test feature check
•
Check for bent or broken pins
•
Reseat the video card
Missing Pixels
CRT screen has spots,
specs or blemishes on
the glass
•
If the blemish is on the outside of the glass, try
cleaning the CRT screen
Brightness Problems
Picture too dim or too
bright
•
Perform monitor reset
•
Adjust brightness & contrast controls
Geometric Distortion
Screen not sized or
centered correctly
•
Perform monitor reset
•
Ensure monitor is in proper video mode
•
Adjust the appropriate geometric control
Moiré (Thin Curvy Lines)
Screen has wavy or
elliptical lines
Screen has wood grain
patterns
•
Ensure monitor is in proper video mode
•
Adjust size first then the moiré controls
Horizontal/Vertical Lines
Screen has one or more
lines
•
Perform monitor self test feature check
•
Check for bent or broken pins
•
Horizontal lines could be damper wires
Sync Problems
Screen is scrambled or
appears torn
•
Perform monitor self test feature check
•
Check for bent or broken pins
