Flowchart 2.6—No Video, Part - HP Compaq nx9500 Series Maintenance And Service Manual

Troubleshooting
Flowchart 2.6—No Video, Part 1
No video.
Expansion Base
Stand-alone
or expansion
base?
Stand-alone
Internal or
external
display*?
External
Adjust
brightness.
Video OK?
N
Check for bent
pins on cable.
Video OK?
Y
Done
2–18
Go to
"Flowchart
2.7—No Video,
Part 2."
Adjust
brightness.
Internal
A
Y
Done
Replace the following one at a time. Test after each replacement.
1. Cable between notebook and notebook display (if applicable)
2. Inverter board (if applicable)
3. Display
4. System board
N
Try
another
display.
*NOTE: To change from internal to
external display, use the hotkey
combination.
Video OK?
N
Press lid
switch to ensure
operation.
Video OK?
N
Internal and
external
video OK?
Y
Done
Maintenance and Service Guide
Y
Done
Y
Done
N
Replace
system
board.