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Ah, excellent, I understand what you mean now. My measurement was over the plastic housing on the connector, which is the size of the recess in the back of the machine, but not the opening, which a quick check with a plastic ruler says is about 32mm like @wottle says. That's fine, looks like...

Ah, do you mean that the VGA connector is wider than the bracket? You can fit it to the outside of the bracket. But also the bracket is 35mm wide and the VGA connector is about 31mm wide.

But.. That doesn't matter? That doesn't have any impact? The VGA connector is inside the case? As long as the VGA cable end goes through the huge opening in the rear of the case, there isn't an issue? I'm confused again. I guess you're seeing something I'm not, I'll leave you too it and see...

The cad model has 26mm between the two screw centres on the connector. That is 1mm oversize vs what they actually should be (like I said, I measured with a ruler quickly to get a visual representation rather than a final design). I realise that is a 9 pin part, but the bodies are the same as...

I believe they are probably what Apple called "BLT" (probably doesn't stand for Bacon, Lettuce Tomato). This is what was used for earlier revisions of this project - Jaguar and Hurricane. Couple of extracts from Apple docs from the period.

Just two - I think you're looking at the prototype chipset chips. The CPUs are missing - one connector has been torn off and you can see 601 in the silkscreen footprint, the other is still there.

Should be fine for that, probably a little expensive. Likely cheaper to get it laser cut locally and even folded. Then you'd just need to plate it at home to stop it rusting.

Thanks Kai, that will need to wait for funds sadly.

I'm afraid that I don't quite follow, the issues you raise aren't things that I was worried about and I'm not 100% sure which features you mean - regional dialects can vary a lot for this sort of thing - lug can mean several things, in this context it could mean the threaded parts that go...

We could potentially use photogrammetry - there is free software for it - it might not be perfect dimensionally, but it would be close for mockups. I keep meaning to build a stepper motor driven turntable for photogrammetry - possibly with an arc rail for the camera too. Taking the photo takes...

Tum te tum... Edit : an extra fold tab at the top is likely needed for rigidity - it will be harder to include if you don't have the right tools, but worth it. Sorry the folds don't look like proper sheet metal folds, I haven't used this cad software in 10 years and never have much.

Yes, it is a mess there isn't it (eBay photo for reference) Options I'd consider... Unlikely to be enough room, but you have a little flexibility to move the VGA connector forwards and backwards, even left to right, to get small pads between the rows and columns on the HDI45 footprint. Not...

https://elephantandchicken.co.uk/stuffandnonsense/?p=1386 I know how that feels too. This isn't the worst one that I've worked on, just the only one I've documented. Wise words. They're horrible to read and do contain errors. I have a dead and a mostly working cx in the house, shout if you're...

I'm not great at the G4 era, I sort of jumped over it mostly other than a Mac Mini at the time - it aligns with when I left home and stopped having as much exposure to macs. I have a couple of G4s now, but have fitted DVI capable cards to them, I don't have any cinema displays anyway. Not sure...

They're not... I potentially worked out what they possibly might be from an old apple engineering doc that listed interfaces including one in that era that was never used... I can go and dig again. I think I was talking about it with someone on discord so might have the chat history to save me...

Also, use a scalpel to ping (gently nudge) each pin on QFP chips to check that there aren't any dry contacts. If they wiggle, resolder them. That's where a lot of issues can be found. Especially on plug in cards, but on corrosion damaged boards too. The pain is that if you put a probe on the...

Sorry, just realised I did a thing I do. I answered your question and didn't think about the context. It is very unlikely to be the CPU. It almost absolutely never is. I would still be checking traces and even perhaps check the ROM contents are valid.

Or can't talk to the VIA I guess, but less likely. Yeah, use any speed 030. As long as it isn't an EC model.

OK, that means the CPU isn't running code from the ROM, that is a big clue. Rifa shouldn't have done any harm to the logic board. They generally either cause no actual visible functional change or blow the fuse in the power plug.

No problem, I wasn't attacking I'm just... I tend to clarify rather than leave stuff, a bad habit from a character flaw and critically precise working environment where misunderstandings cause major problems. No offense meant. I was sharing thoughts because it is something I've considered doing...