Recent content by scruss

It can't be demand from AROS users, though G4s are the machines of choice for that OS. There is a company buying G4 machines to keep very very expensive Heidelberg press equipment going, but I don't think the PB G4's one of them.

haemoglobin reached me via PM, and I can confirm that I swapped the whole top successfully

Unsurprisingly, it worked perfectly. So I now have a perfectly working greyscale 180!

Thanks! Thought it would be something like that. I shall let folks know how it goes. I'll definitely also be taking the mono 180's memory board across, as it has the full 14 MB. The colour one has much less.

I've got two 180s here: a greyscale with nice steady display but a busted disk and some internal support damage. It boots nicely from floppy, but the old 120MB disk made siren noises. Replacing the HD with an 80 MB from a 170 wasn't recognized in Apple HD SC Setup (but then, I don't hear any...

Is that battery tray your own design, Westinghouse? It looks very neat. Can you share it, please?

ah, sorry; got what you meant. Looks like a Type A, and that's what my 140 is now powered with. Thanks!

There are many DC connector sizes, including:     Type A: 5.5 mm OD, 2.1 mm ID     Type A: 5.5 mm OD, 2.5 mm ID     Type B: 6.0 mm OD, 2.1 mm ID     Type B: 6.0 mm OD, 2.5 mm ID     Type C: 3.8 mm OD, 1.4 mm ID     Type D: 6.3 mm OD, 3.1 mm ID     Type E: 3.4 mm OD, 1.3 mm ID so I'm not sure...

Just as a summary to all this, I've given up on this Classic. There's a trace corroded through on the logic board that is stopping all of the RAM appearing. A complete swap of the memory daughter card made no difference. The display board caps are shot, too. Although the display is solid, it...

What size of barrel connector does the PB use? I have a couple (a 140, a 170) with no power supplies. No batteries, either, and it doesn't look too hard a shape to 3D print for new cells and sensors Nice work on the replacement circuit!

Great! I got the floppy working with a $2 (thanks, Above All Surplus!) drive cleaning kit.

Thanks, all. I'll source the replacement big caps for the analogue board today. While I did clean the SIMM connections, I don't have any other machines to test 30 pin SIMMs with. Two and 8 chip SIMMs are rarer than hen's teeth around here; I can get any number of 3 or 9 chip ones. The 70 ns...

I picked up a Macintosh Classic at an electronic waste roundup the other week. Despite the case being badly discoloured and giving a RAM-related Sad Mac on boot, I could tell that the Quantum HD was still spinning and the display is really sharp. The machine has its problems, and I'm wondering...