Compaq 17XL260 - Presario - PIII 500 MHz Maintenance And Service Manual page 71

Models: XL260, XL261, XL262, XL264, XL265, XL266, XL274, XL275, XL360, XL361,
XL362, XL363, XL364, XL365, XL366, XL367, XL368, XL369, XL370, XL371, XL372, XL373,
Problem
The display panel has
a continuous pattern
across it (e.g.,
"jailbars" pattern), has
a single color on it, or
has garbled graphics
across the entire
panel. This failure is
for patterns across the
entire panel (not just
on one section).
A single line, small
group of lines, or block
appears on the display
panel. This failure
occurs in only a
section of the display
panel.
Note: When you perform a "self-test" on an external VGA color or monochrome monitor,
the screen should be white. A narrow black border may also appear on the left and right
sides of the display. Either of these displays indicates that the monitor is working
properly.
Presario 1700 Series
XL374, XL375, XL376, XL377, and XL378
Solving Display Problems (Continued)
Probable Cause
Improper display cable
connections
Defective display cable.
Defective inverter board.
Defective system board.
Defective display panel.
Solution(s)
Reseat the display cable to the
following until the problem is
solved:
1. System board
2. Display assembly
Replace the display assembly.
Replace the display assembly.
Replace the system board.
Replace the display assembly.