One day, I booted up my iBook and got a weird display of lines across the upper portion of the screen. When I first boot up, I hear the familiar startup sound. However, then the screen lights up but with only the very top part being a dark gray color, then a series of lines, then a relly dark black area, and finally a much lighter blue area.
One more thing, there is a cursor displaying in the dark upper portion of the screen, and I can move the cursor arrow in that gray area. But when I try to move it beyond the lines, it will not go any lower than the series of lines. I am suspecting that because I can see the cursor arrow, this means that the computer is not the issue and that I might possibly need to replace the screen. Any other suggestions?
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Justin I suppose the easiest way to do this would be to insert your system disk into your ibook boot it up holding down the c key on your keyboard and then instal a fresh system. Use the erase and instal option as this will erase your hard drive. Any other queries get back to me, hope this helps. By the way a step by step way of doing this can be found at http://macs.about.com/od/leopard105/ss/installleopard.htm although it's leopard it should be similar across system.
Machine 1. The dim display is likely the result of an old or failing compact fluorescent lamp (CFL), generally refered to as the backlight lamp. This CFL is a long, narrow, delicate, and normally very bright light that runs along the bottom of the LCD screen and is powered by the inverter. You could replace the CFL yourself however or simply look for a used iBook screen assembly or the LCD by itself for about the same cost. CFL sell for $7-15. The first time you attempt to replace it, you should buy two because you'll likely break the first one learning how it work. Watch out for mercury!
Machine 2 The graphic processor unit (GPU) is attached to the logic board using a grid of solder balls. With normal wear and tear the logic board flexes and breaks and cracks the solder joints which results in the same exact symptoms that you are experiencing. The chip must me removed and the solder joints "re-balled" to fix it correctly. Again, you could do this yourself or find a reputable service on eBay for $30-55.
Sometimes, if you grip the iBook with your left hand and apply pressure just below the alt key with your thumb and your fingers on the bottom, while booting, the symptoms go temporarily appear to go away. It's a good way to test for this very common iBook problem.
Well, its only the bad news first, your ibook has fallen as many other thousands have, prey to the design flaws of apple, heres an article on it all and some strongly opinionated comments attached,http://johnbakersblog.co.uk/design-fault-in-apples-ibook-g4/And heres how to repair DIY style ;7)http://www.coreyarnold.org/ibook/I've personally done this repair myself aswell, not a bad result but not a guarantee it will work 100% all the time.these machines are cheap on ebay, goodluck, try repair and if not great, then sell as is and buy new used on ebay, youll end up spending $50 and have a wrking ibook...? goodluck, chazz
Try resetting the PRAM by turning on the iBook then holding option + command + P + R and wait till u hear another chime. If it still freezes, it may indicate an application may be causing it to lock up hold shift after you hear the chime to boot OS X into safe boot.