Monday, June 15, 2009

Forever Sleeping PowerBook G4

PowerBook G4 Reed Switch / Hall Effect Sensor Issues
A few days ago I posted a question in MacForums and not sure if there is anything I can do.. but here is the question as follows if any one has suggestions I am open to hear them. Please.

This is my first question here. I have just recently found interest in Mac products. Have been a PC guy for bout 15 years.. I have had about 7 iBooks 3 PowerBooks that I have repaired and passed on to other folks to use.

But this one has me at a loss.

PowerBook G4 A1046 15" screen
1Ghz ppc
512MB ram

It will take an install of OS X Tiger
but..... here are the issues

screen is dark when you boot up you can see every thing just the back light is not on. And I know its not the back light or inverter these work on another machine.
Track Pad and Keyboard are disabled .. (I know they work) if I go in to openfirmware I have been able to reset-nvram and reset-all

also have booted to a Live CD of Linux and the keyboard and track pad function perfectly still have no back light ..

Reason I say the reed switch is stuck in the lid closed position is due to system properties show Clamshell Closed: yes..

Have tried reseting PMU NVRAM all the tricks 4 finger keystrokes openfirmware.. Magnets... voodoo chants... Exorcisms.. LOL

Is there a command in openfirmware to make the system think the clamshell is open.. Or something anything???

I want to make sure the system works (ie. backlight video) before I invest in a new trackpad/keyboard to get this PB to another want to be Mac person.

Well after trying a new Keyboard with trackpad this still has the issue it seems that the logic board is toast, dead, bury it TU.. oh well on to other stuff's


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