Start Up Screen Freeze With Lines Across Screen

Question

The computer is the iSight version. In moving it from one room to another I shut it down properly. I had a back-up HD with Time Machine which I shut down properly. When I tried to restart it shortly after at the new location, the start up chime sounded and the Apple logo came on with the spinning wheel but the screen had light blue horizontal lines across it. The lines at first seemed squiggly but after restarting a few times, the screen seemed to be divided into vertical columns about 3/4" wide with one column having pixels colored light blue and the next column having the same coloration but the row of colored pixels was above the previous one. This arrangement alternated across the screen. I hope this is clear. After a while the spinning wheel and the screen froze and the computer would not continue with the start up.
I reset the SMU by unplugging the power cord, etc. but this did not work. I tried restarting in safe mode-negative. I tried restarting from the original disc-negative. Initially, it sounded like the disc was working because it makes a distinctive noise when a disc is working in the drive but eventually the same initial screen came on with the wheel spinning and then freezing. I tried the current versions of Techtool Pro and Disc Warrior and neither worked. The same thing happened. The noise from the disc drive but the same screen would come on and then the spinning wheel would freeze. Initially the screen with the Apple and the spinning wheel and the lines came on quickly but after a number of times turning the computer on and off, the screen remained dark with a faint light and when the screen came up, the spinning wheel was already frozen.
I use a flight simulator-X-Plane- a lot and some times when I leave it on, screen saver comes on and when I bring the screen back up, the first screen that came up and quickly changed had to do with X-Plane but not with what I was doing. Also, sometimes when I left it and came back there was a different screen but still part of X-Plane but not the screen I left before. I don't know if this is related to my problem or specific with X-Plane. I brought it up because this is the only thing that was different prior to this problem but may not be related. Right now, I've turned it off(obviously) and disconnected the power cord and the keyboard.
Any help would be appreciated.

Answer 1

I've started taking the iSight apart. Detaching the plastic took some time and care but with only a few tears. Separated the screen. The main board is positioned such that the capacitors are on the bottom. So many connections and most of them small. Have to be careful. So many small screws. I hope I can remember where they all go when I put everything together-I hope. I'm at the point where I've turned the main board over so that the capacitors are showing. I hope I can reconnect correctly. Two capacitors have a slight bulge at the top compared to the others. Although I am not sure whether these two are part of the problem. There is another one that has no bulge but there seems to be some stuff on the top. It is not corrosion so I'm not sure whether it was manufactured that way or something is wrong with it. I finally found the battery. Just to change it is such a job. You have to disconnect a lot of stuff and turn the board over to get at it unless Apple technicians have a shortcut. Do you think the battery could cause the problems I have? Anyway, if I have the board exposed already might as well try and change the capacitors. I have not come across any video that shows how to expose the underbelly of the main board. Nor have I seen any video that shows what each part is. On the left side of the layout is an long rectangular shape covered over with black plastic. I haven't checked it out but I assume it is the power source. At the upper left there is a rectangular board with capacitors underneath but there are connections underneath that are so tightly stuffed that I couldn't turn it over but I could lift it up a little and see the heads of some capacitors and there wasn't any bulging capacitors or corrosion. There's one big capacitors under there. Much bigger then those on the mother board. Interesting observation. When I turned the screen over to expose its back most of it was frosted except for a small rectangular piece that was dark but glassy like and the glass like part lies exactly on the small rectangular board about 4X5 or 4X6. Interesting why this small section of the back of the screen should be different from the rest of the back and why it should be exactly above the smaller board. Like the previous versions of iMac, it would be so easy to be able to open the back and have all of the capacitors exposed. My next action is to contact one of the references you posted and see if I can get these three capacitors and the battery from Radio Shack or somewhere and solder the capacitors to the mother board. After all of this putting the whole thing together correctly without ending up with extra parts. One thing did break. Next to the fan in the middle there is a piece of metal attached to the back. There is a small narrow slot in this metal that another piece of bent metal seems to go into and was soldered to it and when everything is put together it seems, although I'm not sure, that this metal touches the back of the screen. It looks like I have to solder it back. I don't know what its purpose is, maybe it grounds the screen? I thought the piece of metal was something to pull in order to liftup something else. So far that is the only thing that has broken and hopefully can be easily fixed. But nothing that seems easy is easy.