The hinges themselves cause the plastic at the screw areas in the LCD housing to break.

The old grease in the hinge, between the spring and the shaft, has hardened over time and instead of keeping the hinge lubricated, the old grease is now making the hinge very difficult to rotate and puts too much force on the fragile plastic with the 4 screwholes in the LCD bessel.

Best solution is to take the hinges apart, remove the old grease from the shaft and spring with WD40, and then soak in White lithium grease ( the foaming kind ). This will loosen up the hinges again.

Nico