Unforunately, I didn't get so lucky :(

My iBook G4 1.42GHz has been giving the '3 beeps and 4 sleep light flashes' for the past 3 days. I found this forum and couldn't believe my luck!

Last night, I tried disconnecting pins 1, 18 and 33 from the first chip, but no luck. I completely removed the first chip, still no luck. I ended up removing ALL of the in-built RAM chips (my iBook HAD 512mb of in-built RAM, so that meant 8 x 64mb chips: 4 on the bottom side and 4 on the top side under the RAM expansion slot).

Still no difference, just the 3 beeps and 4 flashes. Time to start looking for a replacement logic board I think. A whole lot cheaper than buying a replacement Macbook for now!

For anyone with an iBook G4
 

I fixed my iBook G4 using Varu's strategy, though I had a different model and a different preliminary situation. Nonetheless, thank you Varu! I couldn't have done it without your help.

I have put together VERY DETAILED documentation of my computer problem, how I fixed it, a tutorial with images on how to disable the appropriate pins, and the resources I used in doing all of this. I posted this file at the following link:

https://xythos.lsu.edu/users/klouth1...nboard_ram.pdf

I hope this helps somebody!

Hey there,
this link:
https://xythos.lsu.edu/users/klouth1...nboard_ram.pdf

provided above by klouth1, seems like it would be really helpful but the link is unfortunately broken.

Any chance of posted it somewhere else? I am eager to try a fix an identical problem with my ibook.

thanks