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This is another one of those times where I wish we had schematics for the CC analog board.

Voltage adjustment on analog board! Thanks to Larry Pina's Mac Classic & SE Repair and Upgrade Secrets book Chapter 9 reminding me that there is a voltage pot on the analog board, I was able to adjust the voltages using the pot at PP1, which you can just make out in the second analog board...

An update to the Classic II restoration. I tackled recapping the analog board, and as you can see once I removed the caps indicated in Bruce's @Branchus excellent guide, I had some leaky caps. Yummy. Above is the before and after. The Classic II powered up just fine afterwards. However, I...

I’ve done the iteration method of yoke manipulation that Colin mentions with satisfactory results. It just takes time and patience. Likewise, I’m not as brave as Adrian grabbing the yoke on a live machine.

Well done!

I recently came into possession of a Classic II from a friend, and thought I'd share a few successes and oopses I've had so far. Cosmetically, it was in OK shape except for a big crack in the case. I figured a little retrobriting and acetone would work. Well. the retrobrite went fine, but...

Congrats on your first recap! I remember my first and it was quite the harrowing experience. What I have learned from that recap and the ones that I’ve done since is a few simple rules: 1) Verify the polarity of the caps. I’ve caught a time or two (or three) where I had the polarity backwards...

I recently came into possession of a Quadra 630 with an Apple 15” Multiple Sync display with a tilt/swivel base. Restoration is underway on both. I have a question about the tilt/swivel base that isn’t covered in the service source document, nor could I find anything about my question online. I...

To my eye it looks like the pad at point A does not connect to the trace going to point B, based on the black gap between the pad and the trace. I had several similar instances on an SE/30 which I repaired by scraping the trace adjacent to the pad and either bridging via solder or adding a wire...

In my case, it was mostly out of curiosity. I had never seen an SE/30 run 8.1, and it was kind of a hoot to see it running.

I installed Mac OS 8.1 on my SE/30 with a Rominator II using the instructions posted here, and it worked just fine. https://metalbabble.wordpress.com/2020/04/24/a-green-jade-upgrade-ram-upgrades-custom-roms-and-running-mac-os-8-on-an-se-30/

That is a RIFA cap between the two transformers. I imagine you found the fuse by now, located near the mains voltage input. About a year ago I tried working on a problematic Color Classic analog board that started blowing fuses, telling me I have a short somewhere. I removed numerous parts and...

About a year ago I undertook the same repair on my SE/30 using chips purchased from Digikey. Here are the ones I ordered: Texas Instruments / SN74LS166AD Texas Instruments / SN74LS393D I’m at work and thus don’t have my board in front of me to tell you which chip went in which location, but...

I upgraded an early 2014 MacBook Air (MacBookAir6,2) to Monterey using OpenCore Legacy Patcher. It was straight- forward, and the MacBook Air runs just fine under Monterey. Here is a link to supported models: https://dortania.github.io/OpenCore-Legacy-Patcher/MODELS.html#macbook-air instruction...

My SIMM is too tall to get past the screw mount when it is pre-installed in the 575 board outside the CC. Instead, I do some hand gymnastics to seat the SIMM properly once the 575 board is installed. I didn’t find a low-profile SIMM when I was sourcing them a year ago - perhaps others have a...

That is a sweet collection, @eric. I have an Apple Keyboard II, Apple Extended Keyboard II, and my favorite is the Apple Extended Keyboard. Nowhere near the collection you have 😀

Hi James, this is the 128 MB module I’m using in my Mystic CC that seems to work just fine :

The modem traces might be fine, but perhaps the printer port has problems? I’m outside my expertise here. i read your thread more closely and see you have an SE which don’t suffer from the same SMD cap goo problems that plague the SE/30s. Anyway I wanted to share my experience in case it gave...

I do my work outside both for marital bliss as well as living in a climate that (mostly) supports outdoor activities year round. Note the tub to the lower right where I store my equipment, with another tub not shown in the garage with my donor boards and parts.

Yes, a simple continuity check will work, it is what I did. I used the redrawn SE/30 schematics you can get here: https://github.com/mishimasensei/macse30mlb Good luck!