Erratic horizontal lines on LCD display
I have a Macbook 13" Early 2008 Dual Core 2 Duo Penryn Model A1181.
Erratic horizontal (white) lines appear at random positions on the LCD display.
A simple pressure on the screen bezel or even a gentle play with the inclination of the screen causes randomly :
- more lines
- or return to a clean display (with no lines).
See attached pics with more and less lines
(please ignore the glare in middle of screen caused by the camera flash)
- No lines appear using an external display (mini-dvi port) works fine.
- The screen brightness appears fine in any position
Any suggestions on how to investigate this problem and diagnose the cause of the problem ?
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