I was replacing a dim LCD with dark spots on a 2.33 GHz 17" MacBook Pro. This computer also would sometimes boot up with lines all over the screen. This happened about 25% of the time, and normally a reboot fixed it. I assumed there was a loose connection, and that replacing the LCD should take care of that too.

With this new screen, I am finding that the computer initially boots up to a gray screen and the Apple logo (which should indicate the LCD is fine), but as soon as the desktop is supposed to appear, the picture actually degrades into lines. I also have an external monitor attached via DVI, and the picture is perfect on the external.

I am guessing that the video cable between logic board and LCD is bad or frayed, and that in taking the MBP apart I ended up making the problem worse. I double-checked the connections on both ends, and it appears fine. I don't think the symptoms would indicate problems with the inverter board or logic board.

What do you guys think? Thanks!

[quote|madmaxmedia]I was replacing a dim LCD with dark spots on a 2.33 GHz 17" MacBook Pro. This computer also would sometimes boot up with lines all over the screen. This happened about 25% of the time, and normally a reboot fixed it. I assumed there was a loose connection, and that replacing the LCD should take care of that too. With this new screen, I am finding that the computer initially boots up to a gray screen and the Apple logo (which should indicate the LCD is fine), but as soon as the desktop is supposed to appear, the picture actually degrades into lines. I also have an external monitor attached via DVI, and the picture is perfect on the external. I am guessing that the video cable between logic board and LCD is bad or frayed, and that in taking the MBP apart I ended up making the problem worse. I double-checked the connections on both ends, and it appears fine. I don't think the symptoms would indicate problems with the inverter board or logic board. What do you guys think? Thanks![/quote]