I've tried all of them - different batteries (although they only last about 30 sec each), no battery, PRAM reset and PMU resets. Plugged in overnight, cold boot, etc. I'm positive…

Thanks for the suggestions. I've tried all of them - different batteries (although they only last about 30 sec each), no battery, PRAM reset and PMU resets. Plugged in overnight, c…

You might also consider an open-firmware reset dance. Can't hurt, might help.

Wait a sec... Isn't there a PMU reset button? I also thought that the lappies have a CUDA somewhere, no? Pull the battery and run it off AC. Does the problem happen? How about o…

That is really, really weird.

Sorry to hear about your problems. In all the years I have been using OS 7, 8 and 9 I have never heard of the problem you describe. Hope you get it sorted out soon.

The only fixable cause of that symptom is a display cable problem. The flex cable is not infrequently to blame. If squeezing somewhere on the edge of the lid around the display mak…

ROM 2.5.1 + Mac OS 8.6 definetivly works! I´m using it right now

So, the second Powerbook has had its fuse repaired, and I touched up the soldering on the first PB as well, thanks to new flux and the awesome video at CuriousInventor.com However…

Well, its still very unstable and unreliable. I bought a 256 mb stick and i will try that out, should be okay.

Well, i have gotten it working for now with vm on, hopefully it will run better. What i did was set the disk cache in memory control panel to Custom setting at 2 mb. Not sure why t…

Okay, its running with the 128 mb in, seems to be okay. I started up with extensions off, and did a ram test with guage pro, the ram was ok. So i took the daughtercard out and blew…

But i have no problems with only the one module in so i don't think it is an extensions conflict, i think its just when i have them both in and extensions on it has more to load in…

Interestingly it boots with extensions off but when they are on it freezes either before the finder loads or right after the icons show up. I tried flipping them around and the dau…

Are they both the same speed? Some modules aren't backwards compatible (speed wise) so could be conflicting Just a thought

I can't see how i would have a bad ram stick, if i can use the lombard with either on in without any problems. Its just when they are together that i can't boot.

You have a bad ram stick.

I replaced the fuse in the one with the grey screen/no boot. ... It's booting Mac OS 9.1!! I'm excited. The soldering job isn't the best, but it works for now.

I've got 8.6 running on my 400 MHZ sawtooth. In college, I found a G3 Powerbook restore cd. I mounted the ASR image and copied the System Folder to an empty volume on my sawtooth. …

One of mine did the deathbead GLOD thing, where it would work sometimes and then degrade, before finally not cooperating at all. A new power board cured that problem. I figured tha…

The video output is an issue with the Processor, I did test with a good I/O Board. The machine won't power on without a good I/O i thought??? Click to expand... That's what I w…

The video output is an issue with the Processor, I did test with a good I/O Board. The machine won't power on without a good I/O i thought??? I repair power supplies for the Lisa,…

Unfortunately, I don't have any spare I/O boards (I presume you mean the main I/O daughter card - not a parallel card for the expansion slots). The video out problem might just be…

Thanks for all the responses! I have one 2400c completely disassembled, and have found one bad fuse out of like 11. I'll be looking into replacing that. Its the fuse right by the H…

Now if only someone would come forward with a schematic for the power board, I would be really happy, as I could fix the dead ones I have without having to totally replace them. …