Several PowerBook G4 Titanium owners are plagued by a problem that causes the machine to unexpectedly power down when the lid is moved slightly (as noted yesterday).
So far one primary corroborated solution has appeared:
Reset switch sticking Rod Yager writes "I had this same problem when my 500MHz G4 Ti was about 6 months old. Just before I put it in for warranty repair, I discovered that the problem was due to the reset switch sticking as it was released, leaving it partially depressed. Moving it slightly so that it could pop all the way out solved the problem."
Upon further investigation of this issue, it appeears that the reset switch on the rear panel can get pinched by the metal case and triggered when pressure was applied to the the lid in almost any direction. Simply wiggling the reset button with a toothpick or some other maneuverable object and moving it out of the way of the metal will resolve the problem.
Another reader describes a separate issue for which we are still seeking verification "I don't know if it's related to the powering off problem, but when I move my lid, the screen gets all garbled/jumpy, and or it fades to white and or black with psychedelic colors. Moving the lid often gets the screen back. It appears to be a loose connection between the LCD and the base. There are others on Apple's Discussion board that have similar problems. I think it's a flaw in the design."
If you are experiencing a similar issue, please drop us a line at late-breakers@macfixit.com.Resources