Buy an entire screen assembly sometimes you can get them for $20 ....but don't buy it if it's over 100. Or broken macbooks sometimes sell for very very cheap on ebay and you can take that screen or use new one.I'm just about to sell my screen assembly, last time I tried it I got vertical lines ( worked on external so not logic board issue) Possibly wrong fit with my computer. With the clutch cover housing the inverter and inverter cable the chances of breaking it are very high. As a last resort maybe make sure cables are plugged in properly on back of screen and that the inverter cable and display cable are not stressed by the hinges ( if you take it apart you can see that they basically rub along the hinges) also that the inverter cables are properly plugged into inverter.