Hi there. I've got an original macbook 1.83 that I forgot I had in my electronic parts container. It works completely but it has these little horizontal lines that are moving/flickering but that go away depending on the background color. The lines don't show up in screen shot images, and I don't have the right adapter/dongle to test it with an external monitor. The following three images are taken with my phone to show the issue. Anyone with knowledge on what could be causing this particular screen issue please chime in.