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It's common folklore that the connector for the CPU/Memory daughtercard of the PowerBook 500 Series was mysteriously discontinued back in the late 90's, preventing new upgrade cards from being manufactured. I've always just assumed it was true, given the many sources that cite this. Here are...

A few months ago, I worked out how to run 48MB in a PowerBook 500 Series. Inspiration was taken from Toyoki's 64MB mod for PPC upgraded 500-Series notebooks. The concept is similar – tap into unused RAS lines on the memory controller to bump maximum RAM above 36MB. You will need: A 32MB RAM...

Is there any information available about which 64MB SIMMs may work in an LC475? I am thinking about picking up one of these: (eBay link)

A friend has asked me to re-cell his G4 12” battery. Just wanted to check if there were any gotchas with the BMS before I do this. Anyone else successfully rebuild one?

I'm currently running a Rev. A Bondi Blue iMac setup externally with an ATX PSU. It works, but I've had some teething problems with this setup: - No sound output from the headphone jack - System slows to a crawl or hangs at random times; or doesn't boot. Through trial and error I've found...

I've been examining the Beige's Modem slot as I'm designing a peripheral for it. I put this image together which shows exactly which lines have been removed as compared to a standard Comm Slot II. It really does just have the bare minimum of signal lines required for a modem, but usefully all...

Just wanted to run this past the hive mind. I want to add 2x 256MB DIMMs to my iMac G3 Rev A. So, how do I identify low-density 256MB DIMMs? I assume they need 8 chips on each side, like this: Note: I do not want to use high-density 512MB modules for this even though they would technically...

I’m musing the idea of creating a simple interposer to enable the use of a 7410 chip on an Apple G3/G4 ZIF without blowing out the cache controller. Rationale: - The 7410 is the ultimate Beige and Blue/White G3 upgrade. - Both slower G3 ZIF cards and bare 7410 CPUs are cheap and plentiful. -...

Regarding the card shown below, the original Radeon Mac Edition PCI 32MB. Did this board exist on the PC/Sun side, and if so, could one be flashed for Mac? I have a couple of R7000s, but I'd like to play around with an original one.

I’m servicing a couple of 3400c machines at the moment and one of them came to me with a failed logic board, afflicted with the well known ‘Green Light of Death’ syndrome. There seems to be a general consensus that GLoD symptoms are unfixable, so I wanted to show that a full repair is possible...

Hoping to get a quick sense check before I carry out a brain transplant. I’ve got this 7400 466MHz CPU card and from reading around the forums I understand that it’s a straight swap onto a 750L CPU card. And furthermore that no voltage adjustment is necessary since both use 2.0V. I’ll be...

Here’s a step-by-step guide explaining how to disassemble a QuickTake 100. It should be identical for a QT150. It is difficult to do, but hopefully this guide will help. Make sure you keep your screws organised in a jewelery box or something similar with compartments, as there are a lot of them...

Random question, but since I hoovered out all the dirt in my Graphite G4 (Yikes) case, I noticed the speaker looking a bit odd, like some kind of foam is missing. Are you supposed to see directly into the steel inner case?

I've just acquired a IIcx logic board and have been looking it over. There is a jumper labelled W1, which I understand is for selecting a ROM SIMM vs the onboard ROM, just like the IIsi and IIci. There is also a pair of jumpers labelled W3. Anyone know what they do?

Am I right in thinking It looks like mould growth between the layers, rather than vinegar syndrome? I opened up my iBook after a few weeks and saw this, it was fine before.

Anyone recapped an M4896 power supply, the one that comes with the PowerBook 1400 series? I’d like to do mine. I think in addition to cutting around the seam there is also a Philips screw hidden underneath the label. I’ll document my progress here if no guide already exists.

Yesterday I experimented a bit with getting Mac OS 7.6.1 to work on a Beige G3. For novelty/proof of concept :) I stuck the 770 System Enabler in a 7.6.1 System Folder and restarted. On boot I get the usual errors about the system not being compatible, but I skipped them by bringing up the NMI...

I’ve hooked up my Performa 631 board to an SE/30 PSU with the +5, +12 and GND wires hooked up. I’m just getting static out of the headphone jack. The 68040 and Valkyrie chips warm up. Is this a legitimate way to test it?

Last year I needed an on/off button to fit into my Macintosh IIci. I couldn't find a nice model online so I fired up Cinema 4D and designed a model based on the one inside my IIsi. I have just uploaded the STL file to Thingiverse and for anyone who may be interested the link is...

A few of you have been asking for more info on my rebuilt iBook battery. This was a project for my recently acquired 300MHz Blueberry iBook. This won't be a complete guide as I didn't document the process comprehensively enough. I followed The 8-Bit Guy's instructional video here, which...