The cables on the display panel are subject to wearing out from movement. If the manufacturer's still around see if you can get a new cable assembly. If they're not I remember a company known as Man In Machine (find it through yahoo) that specializes in repairing display panels.
>>> John Rinehart <[log in to unmask]> 09/30 10:09 AM >>>
When he folds open the display for viewing the screen is full of lines and
flickers with each movement of the screen back and forth on the hinges.
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