Follow up on: Topic : iBook G4 800 MHz freezes when moved or bumped lightly

Last year I posted the following message, which has been fixed. Summary of repair at bottom of post:
Original message posted Aug 4, 2007:
"For the past several months my iBook G4 has been freezing when moved or bumped lightly. It has also occasionally done some strange things at startup. It sometimes will show just a grey screen and sit there. Sometimes the screen will do some sort of fade transition across the screen, going bright in a wave accros the screen and then to black and then nothing. Sometimes there will be vertical lines in the middle of the right side of the screen of various colors. And the last significant occurance is the occassional static in the display. These video symptoms always occur at startup. If the computer starts up to the desktop it will only freeze if moved or bumped lightly. The cursor sometimes can still be moved after the computer freezes.
I have done the following:
Clean install of OS (Tiger 10.4) with all updates and tested before updating. If have done this before and after wiping the drive clean.
I have removed the extra RAM, reseated the RAM, removed the Airport Extreme card, reseated the Airport Extreme card. I have chaged out the hard drive. I have also disassembled most of the computer to check for any other loose components. The only discrepency I have found was a crimped microphone wire, that is slightly damaged. The screen was replaced a few months after purchase when it had a close encounter with a hot wheel car of my son's. The computer is currently a little over three and a half years old.
I work on computers for a living, specialize in Macs, and have been using Macs since 1986. I am stumped. Can someone please shed some light on this issue by providing a different point of view than my own. Sometimes we need an outside perspective to solve some problems.
Thanks in advance for any help you can provide."
Solution provided by Apple:
I took the laptop to the Apple Store and sent it in for the flat rate repair, which was a little over $300. They had to replace the motherboard and some of the cable. The bad motherboard was causing video issues, freezing and startup difficulties. The bad cables were causing the freezing when the unit was moved. The laptop has performed exceptionally well since the repair and is still in use. Hope this helps other people out there.

As a guess it suggests to me that the leads on U28 need to be reflowed.
Mad Dog

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