Single horizontal line (picture attached)... bad LCD?

Out of the blue one day, my display suddenly showed a thin 1 pixel line that goes from the left to the right of the screen. It changes color depending on what I've got on the screen.
I opened up the computer to make sure everything was clean and dust free. Things looked fine. Do you think that the LCD is toast? Maybe a cable needs to be tightened? I have no clue.
If I've got to replace the LCD screen, it's probably not worth it.
What do you guys think?
http://img299.imageshack.us/img299/9831/pamscreenshotcopy.jpg

Welcome to the Apple discussions.
I would want to run the Apple hardware test, or either of the TechTool programs, to verify if there is an obvious hardware issue. Insert your original OS X disk that came with the system that says in small print on the label 'AHT Version x.x'. Reboot holding the alt key down, choose the Apple hardware test, and when prompted, choose the extended test. What you're looking for is whether it identifies any issues with the video circuit. If the issue is on the logic board, that leads you down one path. If no issues are identified, more likely it's an issue with the LCD.

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MP
Attachments:
L655D_LCD2.jpg ‏9 KB
L655D_LCD1.jpg ‏8 KB

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