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According to the PDF the pin spacing on the CPU is standard 2.54mm/0.1" so if you were so inclined you could just solder a bunch of these and make you're own socket: https://www.aliexpress.com/item/33010354656.html geez finally pasted the right picture... lol

Sure it's an AMP 916668-4 or 916668-1 There's a reasonably priced one on Ebay right now. https://www.ebay.com/itm/160817100155?hash=item257172357b:g:~mUAAOSwishc1yZx

If you mean PCB footprint then no. The pin spacing is different for the original ram card connector. If you mean the ram card header on the Classic logic board then yeah it the same spacing as a standard 2.54mm pin header.

Agreed that using the cheaper standard 2.54mm pitch headers makes more sense to keep costs low. Think cutting would be easier. I just use wire snips so it's pretty fast. If you wanted a nice clean cut then could probably make a jig with a miter saw.

The Molex part ($11 CAD) seems to be roughly around the same price for me as the Samtec ($10 CAD). Both don't have mounting ears though. The Molex is in stock though on Mouser in the previous link above. TE used to make a 44 pos connctor as well 7-532956-8 but it seems to be marked as obsolete...

Ah there we go found the one with the mounting ears. B, J, D, F, H and I options are the models with mounting ears. There's a lot of different part number depending on the gold thickness and finish and if they come in tubes or trays...

I found this but it's not exactly the same: Molex 0719730222 https://www.mouser.ca/ProductDetail/Molex/71973-0222?qs=OZhcm5U9z3Kr%2B/2VqJU9RQ== It's not 100% the same. It's missing the keying notches on the ends though it would fit. The the Macintosh Portable ram card has the same type of...

Yeah for such a case I usually just get a larger connect and snip off the rest. Can get some 2 x 40 pin right angle connector for ~$1 each https://www.aliexpress.com/item/32950033778.html https://www.aliexpress.com/item/1005001288367127.html Gonna see if I can find this type in 2.54: Kinda...

Yeah trying to avoid having cards priced at $200. My goal would be to make at least a 3MB card for the M5120 so Mac OS 7.5.x can be used. I got a 1MB Apple card and a 3MB Technology Works Super Static 3 card. The plan was to use the design of the Super Static 3 to make a new design.

Yeah you can never be too safe when doing any kind of work. Definitely respect the dangers of electricity. Same for power tools and general safty around a job site (nails sticking out, glass, sheet metal, etc). Been shocked a few times with 110V but nothing serious and done some other stuff that...

Here ya go. I made a new post in the The Lab -> Hardware section: https://tinkerdifferent.com/threads/macintosh-pds-dos-compatibility-extender.399/#post-2285

Here's my repo for Macintosh PDS DOS Compatibility Extender: https://github.com/alxlab-zone66x/Apple_DOS_Compatibility_Card_PDS_Extender It contains the Eagle and gerber files for tomytronics' orginal design that was meant to work as a direct replacement for the Reply Card Extender. This...

Hi yes actually. I was planning to put it on github but didn't get a chance yet I guess I can post it here first. This is what tommytronics had to say about his design: I will be posting it on github shortly. :)

So I moved most most of the wires from the electrical box in the wall into another box that will be accessible once the foam board is installed. There's the wires going tot he box in the wall from the attic. Had to cut a bigger hole in the bathroom vanity light box in order to access the...

Sounds like a plan. I'll see what I can do to design a nubus face plate since I need one as well and it's something I can actually do :)

It's funny you mention it. Stephen and I were talking about the possibility of making a new Macintosh Portable ram card. The Macintosh Portable doesn't use DRAM like most computers it using SRAM for the M5120 or PSRAM for the M5126. The connector is not a problem. It's sourcing the ram chips...

Found this great post about plastic solvents by 5wndwcpe at http://www.spiuserforum.com/index.php?threads/solvents-used-for-welding-plastics.2652/ which is worth repeating.

A lot of the older Macintosh computer are suffering from brittle plastic. It's not too uncommon now to just open one and snap a few pieces off. The plastic with this problem is known as ABS. It also has a habbit of yellowing. Here's an example of a cd-rom tray that had the clips broken: What...

Found this in th article Looking Back at Board Test "Schlumberger-Factron, the board test arm of Fairchild Test Systems, a Schlumberger subsidiary". Looks like Schlumberger-Factron is in the business of circuit board testing. Maybe these people might have an idea if they still answer emails...

Just curious but what user count are we at now? Edit: Sorry I'm blind. I just answered my own question: