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For the Quadra 950, it looks like something's wrong with the PSU. No power coming out of it. I don't see anything on the 5V trickle either. The metal shielding has some corrosion/rust on it but nothing too crazy. Tested the fuse and that's ok. The primary side looks ok as I see reasonable...

RIP Louie. ☹️

Next project.... dead Quadra 950. Just arrived and haven't tried anything yet. Broken plastic tabs everywhere. There is some corrosion on the metal but not bad. Logic board looks ok and doesn't seem to have any obvious damage.

Depends on what you mean by “classic Mac OS”. If you intend to support System 7 for example, any solution that does not adequately give up control (due to cooperative multitasking) will “freeze” the system until parsing is complete, as @Snial alluded to. Small snippets might be fine but anything...

The artifacts seem normal. As for the dimming, I need to check my 160 when I get home but from my memory, there was “some” dimming but not much in terms of a smooth adjustment of varying brightness. It was off, one or two mid levels, and then full on if I remember correctly. But I thought there...

Almost looks like that SE/30 was stored upside down and the battery leaked onto the chassis instead of spilling all over the board.

Cool!!

Reminds me of the clear pager cases in the 80s. Neat!

I will concur with what @finkmac said. My display looked the same with no image until recapped. It’s a passive matrix screen so you will see some patchiness as well as what look like artifacts which are in fact just part of the passive matrix experience.

I also have found Claude to be more interesting. These shared answers are not exactly the same as what I saw a while back but clearly provide a hint or general direction which is helpful. The point was many of these already have access to Inside Macintosh and tech notes.

I've tried a few prompts in the past using ChatGPT and it was providing detailed information from various Inside Macintosh volumes as well as Apple technical notes without any sourcing of content from me. For example, I had asked a question about how to add custom vars to a parameter block...

I have not experienced your issue. My 280c works fine with external ADB keyboards/mice through both the duo dock and the mini duo dock. Given you mentioned you have been able to power other devices through that port just fine, that would probably rule out 2 of the 4 pins (VCC/GND) and for your...

+1 on the socket. Gives you options to add a socketed booster/accelerator later and save your PDS slot / space for other things.

Yup, I did. I'm aware the silkscreen is wrong.

Tried a filament print again for the ADB port cover on the 3400c. Came out ok on this attempt. The color match is better than what is shown in the last two pictures below but will need to attempt a better match in the future.

It was the same process as the 500 series keyboard lubrication I mentioned here: https://68kmla.org/bb/index.php?threads/powerbook-500-series-keyboard.47776/

Follow up a year later. The lubrication lasts and keys still feel good.

PowerBook 3400c is almost done. Again, took 3 of them to piece together one fully working and loaded one. The end result is a 240MHz model with full memory (144MB), internal Zip drive, working Lithium battery, new PRAM battery. It has a Samsung screen (also have a working Sharp as well as...

I've got a working Performa 460 board (which I believe is the same as the LCIII+ board). I'll think about it. :)

LC III is fixed and working. Missed two broken data lines going to the CPU from the memory. That got the OS to boot. Then found another broken trace for a dram address line that prevented the memory socket from working. Then found a fourth broken trace preventing the VRAM slot from working...