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This guide was created based on an early 1984 128K Mac analog board P/N 630-0102 with a black anode cap and Logic Board P/N 630-0101. Regardless, this guide should also apply to later revisions of the 128K, 512K and Plus. Links to Digikey and Mouser have not been included since things go out of...

Did you already try cleaning the pot with contact cleaner?

I think the heater would still be on, so less efficient and adds to wear and tear.

I mostly collect Apple and directly adjacent things (NeXT, Radius, etc.), but my first computer was a Packard Bell desktop. It was a 486SX 33... probably some form of Legend from 1993-94ish but I don't recall the details. It had the Frog Design case with gray Memphis style squiggles. It was...

@AndyDiags I've added Lead Spacing above. Also, for anyone curious, here are all the caps as measured in this specific Mac 128K. Quite impressive that only one cap is wildly out of spec.

Neat! I see start times but no time zone. Is it GMT+0?

It says "1983-84"

@Kai Robinson Will do. I'm going to measure all the lead spacings when I do the recap itself. Once I have all of those measurements, I'll add the updated sheet to Resources.

Good catch. I've added in C14. It's a 22uF 50V axial like C6. I did not include C33 or C37 (Ceramic disc caps) since I've never seen those fail and AFAIK are not common to replace prophylactically. I can add them in here as optional if others think it's a good idea. Edit: @JDW are you...

Check out these posts.. MacGUI Hard Disk 20 (HD20) Repair Part 1 MacGUI Hard Disk 20 (HD20) Repair Part 2

Oh funny I made a similar post at almost the same time. I was considering sharing my Digikey cart, but as you mention availability changes so often. I opted for adding the physical specs instead so someone in the future could find whatever usable options are at the time. I'll update mine to...

I'm in the process of doing a full recap on a 128K Mac and was having a hard time finding a complete list. So I made my own. This is for the 120V version part number 630-0102. The physical sizes might be off by a part of a mm, but replacements will mostly be smaller anyway. Notes If you need...

I use a tiny dab of rubber cement.

I recently recapped a Duo 230 LCD which also uses 3.3uF 35V caps. I also went with tiny ceramic caps (3.20mm x 1.60mm). DigiKey link.

Swapped CPU and the Sony sound ICs (UB10,UB11) but no change. (╯‵Д′)╯彡 ┻━┻

I've been working on a bugged SE/30 board and ran into the same issue checking the Bourns filter packs. Out of circuit they measured something like 45k across, but in circuit was a variety. I compared to a referenced known-good board. You can see the specific values here if you're curious. Short...

The original airport base station has a big Lucent WaveLAN PCMCIA card inside of it :)

@Branchus yeah that was one of the first things I tried. I've also swapped all of the socketed ICs with known-working chips and had the same result. It's a long shot but I'm wondering if the CPU might be bad.. freezing when the ROM gets to SCSI. I might try that next.

So today I quadruple checked continuity for all the address and data lines to ASC were fine. Y3 tested OK. Swapped ASC and the symptom persisted. I checked all of the ASC address and data lines on the oscope. The waveform shapes themselves seems okay compared to a working board. But the bugged...

I love the idea of making accurate replacements. That being said, compact Mac feet might be the last ones I'd want. I'd be most interested in replacement rubber feet and stoppers for PowerBooks where they often melt and are very noticeable when missing / melted. Is it possible to cast a...