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Just got my first Q650. Does anyone know what the ports marked in yellow are for?

Thanks!

Can the AB be converted from an original configuration of 120V use 5o 240V use?

It did not. Certainly because of a dead battery.

After a recap of my Portable (backlit), it chimes but produces this error with and without the RAM module inserted: 00000003 0000FF00 Any thoughts what the issue could be? - Chris

Yes, it's the one from Japan. Here's a photo of the backside. No auxiliary PSU came with it, unfortunately.

I'm looking for the installation guide for this accelerator. The connection to the CPU of the Mac is my main concern.

@jessenator I just noted that the caps C21 and C25 on the small board are of different capacity in my PSU. C25 is 10uF, C21 is 22uF. Minor detail but I thought it might be of interest to others. - Chris

So, I measured the voltages as per the suggestions above. They were all within the specs. Both before the chime and after. However, I recapped the analog board. Now the Classic II boots right away. Problem solved. Thanks all for your help!

The adapter is now finally up on Tindie.

The link femu-231209M leads to an page not found error. Update: Now saw the new link, thanks!

My Classic II has a recapped logic board and a known working analog board. Voltage measured on the floppy port is stable 4.98V and 11.95V. The Mac powers up when switched on (fan, disk spinning) but not boot chime. After two to three minutes, it suddenly chimes and works flawlessly. Any...

Update: I found it. It’s R6 and the via connecting to it is just above the defective cap‘s pad.

Did you ever retry to fix the Classic II? I'm curious to know as I have a similar issue with mine.

I'll post a link to my Tindie store next weekend. It'll make it easier to order the parts. Stay tuned.

The + pad of the C6 capacitor came off. I checked the logic board schematics and noticed it would connect to a resistor. However, that resistor does not have a lable. Does anyone know where the pad would connect to? Source: Macintosh Classic II Schematic (bomarc).pdf - Chris

I have some on stock as well for A3 users in Europe.

I have this module that I bought on ebay "tested and working" with 128MB RAM in a PB 3400. Does anyone know why it only shows 64MB?

Just curious: What are alternatives in Europe?

A BlueSCSI might give you a more seamless experience.