[Wagamuffin]

I have a pretty big problem: I bought a G4 powerbook with 512 mb ram in 2 slots, but at some point I experienced a crash, and upon reboot one of the slots detected no more memory at all, leaving me with just 256! I have tried swapping the ram chips, and for the first 5-10 minutes this works, but afterwards I experience yet another freeze and the same problem occurs all over again. Seing as how I have had this laptop for over a year and a half, my warrantee is over, so is there any possible way to fix this??? THNX for your help!!!!

[flanders]

This sounds like the classic case of bad ram sticks. Try them one at a time and see if you get the crash with one and not the other. If so, you may just need to replace one of the sticks.

[Wagamuffin]

Sorry, I should have added that in both cases the bottom port did not work, so the problem is less likely to be due to the sticks being faulty.

[flanders]

ahh, okay then it does sound like the slot. so, no applecare then? hmm...i believe there's a flat-rate repair for pb logic boards through applecare but someone else can elaborate as i've never used that option.

[seanc]

What ram slot stops working? What type of Powerbook do you have?
It sounds to me like you have the logic problem, which means the bottom memory slot stops working.
I'm not sure whether Apple replaces the logic boards for free or not, but they should do.

I may be wrong with this diagnosis but it sounds like you may need a new logic board.

Good Luck

Sean

[Wagamuffin]

Yes it is the bottom slot that doesn't work I will try to contact Apple then :S I hope they do it for free; I don't exactly know what a logic board is but it SURE sounds expensive! Thnx for the advice.

[tooki]

That is exactly the problem I experienced with my 15" 1.25GHz AlBook. I've heard other reports of it, too.

I don't think there's any fix other than a new logic board.

tooki