There a lot of little issue like that related to the failure of what I understand to be a power control chip that controls power to the video processing chip..
I was able to fix on like this with a big wad of electrical tape jammed between the chip and the emi shield.
some people call it a c-clamp fix..
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heres a you tube vido that helps http://www.youtube.com/watch?v=DBzCx2bIGMI
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Here's some more info.. http://www.xlr8yourmac.com/tips/iBookG4_vreg_repair/iBookG4_vreg_repair.html
There a lot of little issue like that related to the failure of what I understand to be a power control chip that controls power to the video processing chip..
I was able to fix on like this with a big wad of electrical tape jammed between the chip and the emi shield.
some people call it a c-clamp fix..
heres a you tube vido that helps http://www.youtube.com/watch?v=DBzCx2bIGMI