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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...

Just curious: does anyone know the story behind why the original Wallstreet PowerBook G3 used an ‘odd’ 83MHz bus for the 250MHz and 292MHz models? Were yields too low on the 266 and 300MHz chips and so they overclocked slower chips? (Or did they underclock faster ones?)

I have an MP-F75W floppy drive that seems to have a failed circuit board - it doesn’t drive the stepper motor properly. When power is applied it buzzes endlessly but doesn’t turn, almost as if the current is rapidly alternating and it’s trying to go in one direction and then the other. I tried...

Knowing a bit about USB 1.1 interfaces now, I thought I’d share images of this card I got off eBay sold as working. It has no inline ferrite beads on the data lines or fuses on Vbus, basically no form of hot plug/overcurrent protection at all. Two of the traces on the back have burned through...

Has anyone done this? I heard that the earlier, USB only clamshell iBooks have the footprint.

Quick question about software. At the UK meetup last year I was playing with @Durosity ’s LC520, and while copying some files I noticed it had an extension installed that was a bit like Connectix Speed Copy, but by Symantec. That is, a multi-threaded copy function with lots of info about...

So while restoring my 840AV, I’ve found that the PSU is dead or at least nearly dead. It’s a Delta SMP-220DB. The symptoms are that it will click on, then click off again. Sometimes, it stays on a bit longer, but it seems to be struggling from the way the fan sounds. It does the same with two...

I've acquired this non-working Radius PrecisionColor 24X (quite a nice card as I understand), which I'm interested in repairing. Running it in a Macintosh IIci, the current symptoms are that there's no output, and it's not listed in TattleTech either – it's invisible to the system. I guess that...

So I’ve been kind of toying with the idea of creating YouTube content for a while. Here’s my first properly edited video, perhaps some of you will enjoy it.

I've started sketching out schematics for my PowerBook 180 CPU daughtercard, which I'll put up on GitHub when done. I think it would be really nice for us to have these to help with troubleshooting and to learn more about this series of machine. Just wanted to check that none currently exist...