You don't have to worry about damaging anything. If you have basic mechanical skills, you can swap out the screen. Even if you don't get the "correct" model number screen, there is a simple modification that needs to be done to the ribbon cable that connects the screen to the circuit board. If modification isn't done, then you would possibly damage something which would be the transistor in the TR1 spot on circuit board. Do the mod, swap out the screen, and tour will be fine. There is a very extensive thread over on the GL1800 forum that explains everything you would possibly need to know.