IBook G4 2005 onboard RAM issue

Good day Apple Geeks!
I have 3 iBooks with onboard RAM issue and I'm trying to fix them. I've found that Open Firmware may help but I don't know how to disable onboard RAM.
Source: http://web.archive.org/web/20070112065215/http://www.kernelthread.com/mac/osx/ar ch_boot.html
I've found also that it is possible to disable RAM by disabling 3 pins, but I can't manage where are these pins.
Source: http://forums.macosxhints.com/showthread.php?p=216497
Please help me and save my computers.
Best reagards
Message was edited by: danielzywczak

Hey Daniel,
First it would be helpful to know exactly which iBooks you're talking about.
CPU speed, screen size, OS and RAM installed.
So how do you know the all three have onboard RAM issues? Does system profiler just show the 0 slot as empty?
Richard
Message was edited by: spudnuty

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This signature left intentionally blank.

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