In one monitor I've had a contact go loose that would black out the screen. Positioning it in a special way would reestablish it.
As for laptops.. the only cases I have seen are user caused, like closing the screen on some earbuds in a rush.
My TiBook (which is well known for cracking hinges) would only display blue unless I had the display propped just right.
i'll most likely be 3D printing just these parts alone in Polycarbonate or Nylon just to make absolutely sure they don't break.
the cable i've had to think about quite a lot, and there's now a spacer which keeps it away from sharp edges as the hinge rotates in its socket. last thing you want is a 90 degree turn and the socket to rub continuously against the cable, breaking it within a matter of weeks.
but, man those LVDS cables are thin. a 3.5mm bundle (wrapped in special cloth tape) of 28 wires! just incredible.
anyway, repair and maintenance will be fully documented so that people can sort their machines out. i really don't want these things ending up in landfill.