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Discharging the CRT is always the way to go. It’s indeed not that complicated, there are plenty of tutorials on how to make it in the safest way. For example, download the Larry Pina book and you will find good guidance there. However, it’s also good to know that almost all the compact Macs use...

I must admit that sometimes it’s really baffling to see how premium and expensive products are in fact poorly designed and engineered. That hinge is a compendium of how not to design a mechanically stressed component, mixing fragile metal cast, concentrated loads and sharp corners. Good that...

The plastic tube is threaded, for allowing the fine positioning of the ferrite core wrt to the coils.

My two cents… the plastic part fulfills the function of allowing the ferrite core to be precisely aligned with the coils, allowing the fine tuning. If the sheath of the coils is not damaged, and the ferrite core can still be adjusted, the component should still be fully functional. I had an...

Oh, yesss! I am so glad you appreciate them! I literally made them one by one with my hands. It’s been a nice project, I hope your N4000 display is in a good shape, too!

I did some complex shape PU casting some years ago (replacement for NeXT display rollers). There are some pics on this forum, too. It’s been fun, but expensive and utterly time consuming. Degassing the PU before casting is key, but small vacuum chambers are cheap on Amazon.

My pleasure, have fun with the MO!

Mine has indeed just one screw.

Why not Pages? Numbers is a bad joke, but Pages and Keynote are solid propositions. As a writer, though, I’d consider more specific applicatios, such as iA Writer (https://ia.net/writer).

In sheer honesty, I have no clue, but I would be very surprised if the board had been tweaked for working at 110 V only. The official specs are reading variable voltage input. https://support.apple.com/en-ca/112200 Could be that on some markets the regulatory labeling mandates to conform only...

The only fixed voltage analog board that I have ever encountered is the one of the original 128k. Anyhow, I have a Performa 275 (a CCII sold only in Asia), and that one is rated 100-240 V, 50/60 Hz, 2A.

I measured on the second line of pins starting from the rear of the machine. The rows are marked on the board, from 1 to 32, so I should have picked the right one. I was very surprised to see such a messy situation triggered by a simple voltage measurement, and I got very scared as at first the...

I wish you a smooth relocation, all the rest is now unimportant.

@JDW The meter is a Fluke, don’t remember by heart the model name, but it’s a recent one. By default, it works in auto range mode, so maybe this caused some fluctuation on the drained current which disturbed the CPU operations. However, I must admit it was very strange as the voltage rail...

So, I have tried the proposed hack (tapping +5V from PDS position A2 for feeding the BlueSCSI board and preventing the Wi-Fi crash), but strange (and scary!) things happened. At first, I just wanted to monitor the status of the A2 pin in different conditions (off, sleep, battery, PSU etc). So, I...

It’s a pack of 18650 cells. Doable, but not for everyone. https://davidigreen.com/blog/ibook-battery-rebuild

Yeah, not a very technical description, I must admit… I just go by heart, I must still have somewhere some diodes I bought for refurbishing a busted PSU rectifier. So, heavy duty, chunky ones. By the indications you shared, I should be able to source an appropriate component, hopefully on...

I see we're eventually converging, I also have collected evidence that an "always on" solution works (I used a bench PSU). Bar for the busted pico which is still a complete mystery to me, in the end we expereince the same issues. So, I will consider the proposed solution, however I only have PSU...

So, today I spent some time testing step by step different incremental configurations. System 6, System 7, with various HD drivers. Everything works fine, until the moment I add in to the picture the Wi-Fi thing. At that point the crash happens again (I guess the same situation already reported...

So, seems there’s light at the end of the tunnel… First off, if I use the same SCSI device on the external bus, everything works. So, it must be about the way the Portable is accessing the internal bus, which is likely managed by the software… and, bingo! When I use System 6.0.8, everything...