Laptop Graphics Display Distortion

[imported_bowens]

Hi, I have an old Compaq laptop running XP. The cpu is a 1.5ghz Celeron, and the memory is shared. It frequently exhibits this display distortion (noise?), and I was wondering if anyone knows what the root cause is? where it shows the red, it should be black, and the horizontal red moves (see short video clip, below, as well).


Video clip 3mb-- http://www.youtube.com/watch?v=ZHZtetE0zCo

thx, brad.

 

[paul878]

Grab the lcd and move it back and forth, does it recreate this problem?
I have seeing lose lcd cable causes this type of problem.

 

[imported_bowens]

I "manipulated" the screen pretty vigorously, but no noticeable effect

Grab the lcd and move it back and forth, does it recreate this problem?
I have seeing lose lcd cable causes this type of problem.

 

[paul878]

I "manipulated" the screen pretty vigorously, but no noticeable effect

ok, lets isolate the problem component, hook it up to an external monitor.

does the problem appears on the external monitor?

 

[imported_bowens]

ahh, it does not extend to the VGA monitor (which is also LCD)

ok, lets isolate the problem component, hook it up to an external monitor.

does the problem appears on the external monitor?

 

[paul878]

Then the problem could be cause by LCD, LCD cable, or motherboard LCD cable connector. I would reseat the LCD cable on both end before I do anything else.

From my experiences with laptop, if this is not caused by a lose lcd connection, then it is cause by the LCD.

 

[imported_bowens]

thanks, Paul.

 

[imported_bowens]

well, I finally got around to replacing the video cable today, and, voila, it's working great, now. $10 for a new cable!